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Vehicle Fit

AC DELCO 4K378 [SERPENTINE BELT]

This AC DELCO serpentine belt is a new part. It is the same part that you would receive if you purchased it from your local GM dealer.

This serpentine belt features the following Specifications

  • Brand New AC Delco part
  • V-Ribbed Serpentine Belt
  • Rib Quanity 4
  • Built to strict quality control standards
  • Direct replacement
  • 100% factory tested

Item Condition: New

Wear and Tear

This item is backed by a 60-day warranty against defects in materials and workmanship under its intended use. The warranty does not cover normal wear and tear. 

  1. step : Remove the intake assembly and serpentine belt. (1:05)
    • Use a screwdriver to pry off the intake assembly.
    • Unclip the radiator hose to move it out of the way.
    • Use a 15 mm socket and ratchet to loosen the tensioner and remove the serpentine belt.
    • Make sure you have a diagram of the serpentine belt route handy later for reassembly.
  2. step : Remove the A/C compressor belt (2:30)
    • Remove the protecting plate underneath the car by removing the 15 mm bolts.
    • Use a 3/8ths ratchet to release the tension on your A/C compressor belt.
    • Remove the A/C compressor belt.
  3. step : Install the new A/C compressor belt and reassemble. (4:45)
    • Using your ratchet put the A/C compressor belt on.
    • Bolt the protecting plate back on.
    • Use your 15 mm wrench to release the tension to put your serpentine belt back on.
    • Put your intake assembly back on and clip the radiator hose back into place.

Tools needed for replacement:

    Ratchets & Related

  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 15mm Socket

5.00/ 5.0
3 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
3
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perfect fit
September 6, 2011
The correct size belt, perfect fit for my 2001 Chevy Tahoe. Some other parts stores will sell you belts that are close, but when installed, the belt tensioner gauge shows in the worn-belt area. Thank you, A1 Auto.
October 16, 2013
Excellent!
Everything was excellent all the way from the ordering to the online videos of the installation. This guy who never works on cars anymore was able to do all of it with ease! Great all the way around!
May 28, 2018
Will this fit my car? Add a vehicle to make sure
Customer Q&A
Ask a question to 1A Auto customers who purchased the product
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Year Make Model Description
1991-1995Acura Legend Acura Legend V6 3.2L (Engine ID C32A1) Power Steering Pump Serpentine Belt ACDelco 4K378
1996-1998Acura TL Acura TL V6 3.2L (Engine ID C32A6) Power Steering Pump Serpentine Belt ACDelco 4K378
2002-2004Cadillac Escalade Cadillac Escalade V8 6.0L (8th Vin Digit N) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2002-2005Cadillac Escalade Cadillac Escalade V8 5.3L (8th Vin Digit T) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2006Cadillac Escalade Cadillac Escalade V8 6.0L (8th Vin Digit N) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Cadillac Escalade Cadillac Escalade V8 6.2L (8th Vin Digit 8) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2003-2004Cadillac Escalade ESV Cadillac Escalade ESV V8 6.0L (8th Vin Digit N) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2006Cadillac Escalade ESV Cadillac Escalade ESV V8 6.0L (8th Vin Digit N) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Cadillac Escalade ESV Cadillac Escalade ESV V8 6.2L (8th Vin Digit 8) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2002-2004Cadillac Escalade EXT Cadillac Escalade EXT V8 6.0L (8th Vin Digit N) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2006Cadillac Escalade EXT Cadillac Escalade EXT V8 6.0L (8th Vin Digit N) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Cadillac Escalade EXT Cadillac Escalade EXT V8 6.2L (8th Vin Digit 8) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Avalanche Chevy Avalanche V8 6.0L (8th Vin Digit Y) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Avalanche Chevy Avalanche V8 5.3L (8th Vin Digit J) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Avalanche Chevy Avalanche V8 5.3L (8th Vin Digit 3) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Avalanche Chevy Avalanche V8 5.3L (8th Vin Digit 0) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2002-2005Chevy Avalanche 1500 Chevy Avalanche 1500 V8 5.3L (8th Vin Digit T) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2003-2005Chevy Avalanche 1500 Chevy Avalanche 1500 V8 5.3L (8th Vin Digit Z) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2006Chevy Avalanche 1500 Chevy Avalanche 1500 V8 5.3L (8th Vin Digit Z) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2003-2007Chevy Express 1500 Van Chevy Express 1500 Van V8 5.3L (8th Vin Digit T) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2003-2004Chevy Express 1500 Van Chevy Express 1500 Van V8 5.3L (8th Vin Digit Z) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2004Chevy Express 1500 Van Chevy Express 1500 Van V6 4.3L (8th Vin Digit X) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007Chevy Express 1500 Van Chevy Express 1500 Van V8 5.3L (8th Vin Digit Z) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2008Chevy Express 1500 Van Chevy Express 1500 Van V8 5.3L (8th Vin Digit 4) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2003-2007Chevy Express 2500 Van Chevy Express 2500 Van V8 4.8L (8th Vin Digit V) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2003-2007Chevy Express 2500 Van Chevy Express 2500 Van V8 5.3L (8th Vin Digit T) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2003-2007Chevy Express 2500 Van Chevy Express 2500 Van (8th Vin Digit U) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2003-2004Chevy Express 2500 Van Chevy Express 2500 Van V8 5.3L (8th Vin Digit Z) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2004Chevy Express 2500 Van Chevy Express 2500 Van V6 4.3L (8th Vin Digit X) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007Chevy Express 2500 Van Chevy Express 2500 Van V8 5.3L (8th Vin Digit Z) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2008Chevy Express 2500 Van Chevy Express 2500 Van V8 6.0L (8th Vin Digit K) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2008Chevy Express 2500 Van Chevy Express 2500 Van V8 4.8L (8th Vin Digit C) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2008Chevy Express 2500 Van Chevy Express 2500 Van V8 5.3L (8th Vin Digit 4) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2003-2007Chevy Express 3500 Van Chevy Express 3500 Van (8th Vin Digit U) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2003-2007Chevy Express 3500 Van Chevy Express 3500 Van V8 4.8L (8th Vin Digit V) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2004Chevy Express 3500 Van Chevy Express 3500 Van V6 4.3L (8th Vin Digit X) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2008Chevy Express 3500 Van Chevy Express 3500 Van V8 6.0L (8th Vin Digit K) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2008Chevy Express 3500 Van Chevy Express 3500 Van V8 4.8L (8th Vin Digit C) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
1998-2001Chevy Metro Chevy Metro L4 1.3L (8th Vin Digit 2) Air Conditioning Compressor & Power Steering Serpentine Belt ACDelco 4K378
1999-2007Chevy Silverado 1500 Chevy Silverado 1500 (8th Vin Digit U) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
1999-2007Chevy Silverado 1500 Chevy Silverado 1500 V8 4.8L (8th Vin Digit V) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
1999-2007Chevy Silverado 1500 Chevy Silverado 1500 V8 5.3L (8th Vin Digit T) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2002-2005Chevy Silverado 1500 Chevy Silverado 1500 (8th Vin Digit U) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2002-2007Chevy Silverado 1500 Chevy Silverado 1500 V8 5.3L (8th Vin Digit Z) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2005-2006Chevy Silverado 1500 Chevy Silverado 1500 V8 5.3L (8th Vin Digit B) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2006Chevy Silverado 1500 Chevy Silverado 1500 V8 6.0L (8th Vin Digit N) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Silverado 1500 Chevy Silverado 1500 V8 6.0L (8th Vin Digit K) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Silverado 1500 Chevy Silverado 1500 V8 5.3L (8th Vin Digit J) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Silverado 1500 Chevy Silverado 1500 V8 4.8L (8th Vin Digit C) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Silverado 1500 Chevy Silverado 1500 V8 5.3L (8th Vin Digit M) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Silverado 1500 Chevy Silverado 1500 V8 5.3L (8th Vin Digit 0) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Silverado 1500 Chevy Silverado 1500 V8 5.3L (8th Vin Digit 3) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Silverado 1500 Chevy Silverado 1500 V8 6.0L (8th Vin Digit Y) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007Chevy Silverado 1500 Classic Chevy Silverado 1500 Classic (8th Vin Digit U) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007Chevy Silverado 1500 Classic Chevy Silverado 1500 Classic V8 5.3L (8th Vin Digit T) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007Chevy Silverado 1500 Classic Chevy Silverado 1500 Classic V8 6.0L (8th Vin Digit N) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007Chevy Silverado 1500 Classic Chevy Silverado 1500 Classic V8 5.3L (8th Vin Digit Z) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007Chevy Silverado 1500 Classic Chevy Silverado 1500 Classic V8 4.8L (8th Vin Digit V) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007Chevy Silverado 1500 Classic Chevy Silverado 1500 Classic V8 5.3L (8th Vin Digit B) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2001-2003Chevy Silverado 1500 HD Chevy Silverado 1500 HD (8th Vin Digit U) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2005-2006Chevy Silverado 1500 HD Chevy Silverado 1500 HD (8th Vin Digit U) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007Chevy Silverado 1500 HD Classic Chevy Silverado 1500 HD Classic (8th Vin Digit U) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
1999-2004Chevy Silverado 2500 Chevy Silverado 2500 (8th Vin Digit U) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
1999-2000Chevy Silverado 2500 Chevy Silverado 2500 V8 5.3L (8th Vin Digit T) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2002-2004Chevy Silverado 2500 Chevy Silverado 2500 (8th Vin Digit U) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2001-2006Chevy Silverado 2500 HD Chevy Silverado 2500 HD (8th Vin Digit U) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2002-2005Chevy Silverado 2500 HD Chevy Silverado 2500 HD (8th Vin Digit U) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2006Chevy Silverado 2500 HD Chevy Silverado 2500 HD V8 6.0L (8th Vin Digit N) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Silverado 2500 HD Chevy Silverado 2500 HD V8 6.0L (8th Vin Digit K) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Silverado 2500 HD Chevy Silverado 2500 HD V8 6.0L (8th Vin Digit Y) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007Chevy Silverado 2500 HD Classic Chevy Silverado 2500 HD Classic V8 6.0L (8th Vin Digit N) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007Chevy Silverado 2500 HD Classic Chevy Silverado 2500 HD Classic (8th Vin Digit U) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2001-2006Chevy Silverado 3500 Chevy Silverado 3500 (8th Vin Digit U) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2002-2005Chevy Silverado 3500 Chevy Silverado 3500 (8th Vin Digit U) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2006Chevy Silverado 3500 Chevy Silverado 3500 V8 6.0L (8th Vin Digit N) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007Chevy Silverado 3500 Classic Chevy Silverado 3500 Classic (8th Vin Digit U) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007Chevy Silverado 3500 Classic Chevy Silverado 3500 Classic V8 6.0L (8th Vin Digit N) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Silverado 3500 HD Chevy Silverado 3500 HD V8 6.0L (8th Vin Digit Y) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Silverado 3500 HD Chevy Silverado 3500 HD V8 6.0L (8th Vin Digit K) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2000-2005Chevy Suburban 1500 Chevy Suburban 1500 V8 5.3L (8th Vin Digit T) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2000-2006Chevy Suburban 1500 Chevy Suburban 1500 (8th Vin Digit N) (8th Vin Digit U) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2002-2006Chevy Suburban 1500 Chevy Suburban 1500 V8 5.3L (8th Vin Digit Z) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Suburban 1500 Chevy Suburban 1500 V8 5.3L (8th Vin Digit 0) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Suburban 1500 Chevy Suburban 1500 V8 5.3L (8th Vin Digit 3) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Suburban 1500 Chevy Suburban 1500 V8 5.3L (8th Vin Digit J) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Suburban 1500 Chevy Suburban 1500 V8 6.0L (8th Vin Digit K) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Suburban 1500 Chevy Suburban 1500 V8 6.0L (8th Vin Digit Y) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2000-2006Chevy Suburban 2500 Chevy Suburban 2500 (8th Vin Digit N) (8th Vin Digit U) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Suburban 2500 Chevy Suburban 2500 V8 6.0L (8th Vin Digit K) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Suburban 2500 Chevy Suburban 2500 V8 6.0L (8th Vin Digit Y) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2000-2006Chevy Tahoe Chevy Tahoe V8 5.3L (8th Vin Digit T) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2000-2006Chevy Tahoe Chevy Tahoe V8 4.8L (8th Vin Digit V) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2002-2006Chevy Tahoe Chevy Tahoe V8 5.3L (8th Vin Digit Z) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Tahoe Chevy Tahoe V8 5.3L (8th Vin Digit 0) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Tahoe Chevy Tahoe V8 4.8L (8th Vin Digit C) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008Chevy Tahoe Chevy Tahoe V8 5.3L (8th Vin Digit J) 4 Rib Air Conditioning Serpentine Belt ACDelco 4K378
2001-2002Chevy Tracker Chevy Tracker L4 1.6L (8th Vin Digit 6) Air Conditioning Compressor & Power Steering Serpentine Belt ACDelco 4K378
2008Chevy Trailblazer Chevy Trailblazer V8 5.3L (8th Vin Digit M) Serpentine Belt ACDelco 4K378
1994-1995Ford Aspire Ford Aspire L4 1.3L (8th Vin Digit H) Air Conditioning Compressor & Power Steering Serpentine Belt ACDelco 4K378
1996-1997Ford Aspire Ford Aspire L4 1.3L (8th Vin Digit H) Factory Installed Air Condtioning Air Conditioning Compressor & Power Steering Serpentine Belt ACDelco 4K378
2003-2007GMC Savana 1500 Van GMC Savana 1500 Van V8 5.3L (8th Vin Digit T) Air Conditioning Serpentine Belt ACDelco 4K378
2003-2007GMC Savana 1500 Van GMC Savana 1500 Van V8 5.3L (8th Vin Digit Z) Air Conditioning Serpentine Belt ACDelco 4K378
2004-2005GMC Savana 1500 Van GMC Savana 1500 Van V6 4.3L (8th Vin Digit X) Air Conditioning Serpentine Belt ACDelco 4K378
2008GMC Savana 1500 Van GMC Savana 1500 Van V8 5.3L (8th Vin Digit 4) Air Conditioning Serpentine Belt ACDelco 4K378
2003-2007GMC Savana 2500 Van GMC Savana 2500 Van V8 5.3L (8th Vin Digit T) Air Conditioning Serpentine Belt ACDelco 4K378
2003-2007GMC Savana 2500 Van GMC Savana 2500 Van (8th Vin Digit U) Air Conditioning Serpentine Belt ACDelco 4K378
2003-2007GMC Savana 2500 Van GMC Savana 2500 Van V8 5.3L (8th Vin Digit Z) Air Conditioning Serpentine Belt ACDelco 4K378
2003-2007GMC Savana 2500 Van GMC Savana 2500 Van V8 4.8L (8th Vin Digit V) Air Conditioning Serpentine Belt ACDelco 4K378
2004-2005GMC Savana 2500 Van GMC Savana 2500 Van V6 4.3L (8th Vin Digit X) Air Conditioning Serpentine Belt ACDelco 4K378
2008GMC Savana 2500 Van GMC Savana 2500 Van V8 6.0L (8th Vin Digit K) Air Conditioning Serpentine Belt ACDelco 4K378
2008GMC Savana 2500 Van GMC Savana 2500 Van V8 5.3L (8th Vin Digit 4) Air Conditioning Serpentine Belt ACDelco 4K378
2008GMC Savana 2500 Van GMC Savana 2500 Van V8 4.8L (8th Vin Digit C) Air Conditioning Serpentine Belt ACDelco 4K378
2003-2007GMC Savana 3500 Van GMC Savana 3500 Van (8th Vin Digit U) Air Conditioning Serpentine Belt ACDelco 4K378
2003-2007GMC Savana 3500 Van GMC Savana 3500 Van V8 4.8L (8th Vin Digit V) Air Conditioning Serpentine Belt ACDelco 4K378
2008GMC Savana 3500 Van GMC Savana 3500 Van V8 4.8L (8th Vin Digit C) Air Conditioning Serpentine Belt ACDelco 4K378
2008GMC Savana 3500 Van GMC Savana 3500 Van V8 6.0L (8th Vin Digit K) Air Conditioning Serpentine Belt ACDelco 4K378
1999-2006GMC Sierra 1500 GMC Sierra 1500 V8 4.8L (8th Vin Digit V) Air Conditioning Serpentine Belt ACDelco 4K378
1999-2006GMC Sierra 1500 GMC Sierra 1500 V8 5.3L (8th Vin Digit T) Air Conditioning Serpentine Belt ACDelco 4K378
1999-2006GMC Sierra 1500 GMC Sierra 1500 (8th Vin Digit U) Air Conditioning Serpentine Belt ACDelco 4K378
2002-2006GMC Sierra 1500 GMC Sierra 1500 V8 5.3L (8th Vin Digit Z) Air Conditioning Serpentine Belt ACDelco 4K378
2005-2006GMC Sierra 1500 GMC Sierra 1500 V8 6.0L (8th Vin Digit N) Air Conditioning Serpentine Belt ACDelco 4K378
2005-2006GMC Sierra 1500 GMC Sierra 1500 V8 5.3L (8th Vin Digit B) Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008GMC Sierra 1500 GMC Sierra 1500 V8 5.3L (8th Vin Digit M) Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008GMC Sierra 1500 GMC Sierra 1500 V8 5.3L (8th Vin Digit J) Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008GMC Sierra 1500 GMC Sierra 1500 V8 5.3L (8th Vin Digit 0) Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008GMC Sierra 1500 GMC Sierra 1500 V8 6.0L (8th Vin Digit K) Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008GMC Sierra 1500 GMC Sierra 1500 V8 5.3L (8th Vin Digit 3) Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008GMC Sierra 1500 GMC Sierra 1500 V8 4.8L (8th Vin Digit C) Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008GMC Sierra 1500 GMC Sierra 1500 V8 6.0L (8th Vin Digit Y) Air Conditioning Serpentine Belt ACDelco 4K378
2007GMC Sierra 1500 Classic GMC Sierra 1500 Classic V8 4.8L (8th Vin Digit V) Air Conditioning Serpentine Belt ACDelco 4K378
2007GMC Sierra 1500 Classic GMC Sierra 1500 Classic (8th Vin Digit U) Air Conditioning Serpentine Belt ACDelco 4K378
2007GMC Sierra 1500 Classic GMC Sierra 1500 Classic V8 5.3L (8th Vin Digit T) Air Conditioning Serpentine Belt ACDelco 4K378
2007GMC Sierra 1500 Classic GMC Sierra 1500 Classic V8 5.3L (8th Vin Digit Z) Air Conditioning Serpentine Belt ACDelco 4K378
2007GMC Sierra 1500 Classic GMC Sierra 1500 Classic V8 6.0L (8th Vin Digit N) Air Conditioning Serpentine Belt ACDelco 4K378
2007GMC Sierra 1500 Classic GMC Sierra 1500 Classic V8 5.3L (8th Vin Digit B) Air Conditioning Serpentine Belt ACDelco 4K378
2001-2003GMC Sierra 1500 HD GMC Sierra 1500 HD (8th Vin Digit U) Air Conditioning Serpentine Belt ACDelco 4K378
2005-2006GMC Sierra 1500 HD GMC Sierra 1500 HD V8 6.0L (8th Vin Digit N) Air Conditioning Serpentine Belt ACDelco 4K378
2007GMC Sierra 1500 HD Classic GMC Sierra 1500 HD Classic V8 6.0L (8th Vin Digit N) Air Conditioning Serpentine Belt ACDelco 4K378
1999-2004GMC Sierra 2500 GMC Sierra 2500 (8th Vin Digit U) Air Conditioning Serpentine Belt ACDelco 4K378
2001-2006GMC Sierra 2500 HD GMC Sierra 2500 HD (8th Vin Digit U) Air Conditioning Serpentine Belt ACDelco 4K378
2005-2006GMC Sierra 2500 HD GMC Sierra 2500 HD V8 6.0L (8th Vin Digit N) Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008GMC Sierra 2500 HD GMC Sierra 2500 HD V8 6.0L (8th Vin Digit Y) Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008GMC Sierra 2500 HD GMC Sierra 2500 HD V8 6.0L (8th Vin Digit K) Air Conditioning Serpentine Belt ACDelco 4K378
2007GMC Sierra 2500 HD Classic GMC Sierra 2500 HD Classic V8 6.0L (8th Vin Digit N) Air Conditioning Serpentine Belt ACDelco 4K378
2007GMC Sierra 2500 HD Classic GMC Sierra 2500 HD Classic (8th Vin Digit U) Air Conditioning Serpentine Belt ACDelco 4K378
2001-2006GMC Sierra 3500 GMC Sierra 3500 (8th Vin Digit U) Air Conditioning Serpentine Belt ACDelco 4K378
2005-2006GMC Sierra 3500 GMC Sierra 3500 V8 6.0L (8th Vin Digit N) Air Conditioning Serpentine Belt ACDelco 4K378
2007GMC Sierra 3500 Classic GMC Sierra 3500 Classic (8th Vin Digit U) Air Conditioning Serpentine Belt ACDelco 4K378
2007GMC Sierra 3500 Classic GMC Sierra 3500 Classic V8 6.0L (8th Vin Digit N) Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008GMC Sierra 3500 HD GMC Sierra 3500 HD V8 6.0L (8th Vin Digit K) Air Conditioning Serpentine Belt ACDelco 4K378
2000-2006GMC Yukon GMC Yukon V8 5.3L (8th Vin Digit T) Air Conditioning Serpentine Belt ACDelco 4K378
2000-2006GMC Yukon GMC Yukon V8 4.8L (8th Vin Digit V) Air Conditioning Serpentine Belt ACDelco 4K378
2002-2006GMC Yukon GMC Yukon V8 5.3L (8th Vin Digit Z) Air Conditioning Serpentine Belt ACDelco 4K378
2007GMC Yukon GMC Yukon V8 4.8L (8th Vin Digit C) Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008GMC Yukon GMC Yukon V8 5.3L (8th Vin Digit 0) Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008GMC Yukon GMC Yukon V8 5.3L (8th Vin Digit J) Air Conditioning Serpentine Belt ACDelco 4K378
2000-2005GMC Yukon XL 1500 GMC Yukon XL 1500 V8 5.3L (8th Vin Digit T) Air Conditioning Serpentine Belt ACDelco 4K378
2000-2006GMC Yukon XL 1500 GMC Yukon XL 1500 Air Conditioning Serpentine Belt ACDelco 4K378
2002-2006GMC Yukon XL 1500 GMC Yukon XL 1500 V8 5.3L (8th Vin Digit Z) Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008GMC Yukon XL 1500 GMC Yukon XL 1500 V8 5.3L (8th Vin Digit 0) Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008GMC Yukon XL 1500 GMC Yukon XL 1500 V8 5.3L (8th Vin Digit 3) Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008GMC Yukon XL 1500 GMC Yukon XL 1500 V8 5.3L (8th Vin Digit J) Air Conditioning Serpentine Belt ACDelco 4K378
2000-2006GMC Yukon XL 2500 GMC Yukon XL 2500 Air Conditioning Serpentine Belt ACDelco 4K378
2005GMC Yukon XL 2500 GMC Yukon XL 2500 V8 6.0L (8th Vin Digit N) Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008GMC Yukon XL 2500 GMC Yukon XL 2500 V8 6.0L (8th Vin Digit K) Air Conditioning Serpentine Belt ACDelco 4K378
2007-2008GMC Yukon XL 2500 GMC Yukon XL 2500 V8 6.0L (8th Vin Digit Y) Air Conditioning Serpentine Belt ACDelco 4K378
1995-1997Geo Metro Geo Metro L4 1.3L (8th Vin Digit 9) Air Conditioning Compressor & Power Steering Serpentine Belt ACDelco 4K378
1992-1997Hyundai Sonata Hyundai Sonata L4 2.0L (8th Vin Digit F) Serpentine Belt ACDelco 4K378
1998Hyundai Sonata Hyundai Sonata L4 2.0L Serpentine Belt ACDelco 4K378
1993-1997Infiniti J30 Infiniti J30 V6 3.0L (Engine ID VG30DE) Air Conditioning Compressor & Idler Pulley Serpentine Belt ACDelco 4K378
1998Kia Sephia Kia Sephia L4 1.8L (8th Vin Digit 1) Manual Steering Air Conditioning Compressor Serpentine Belt ACDelco 4K378
1998-1999Kia Sephia Kia Sephia L4 1.8L (8th Vin Digit 5) Manual Steering Air Conditioning Compressor Serpentine Belt ACDelco 4K378
2000Kia Sephia Kia Sephia L4 1.8L (8th Vin Digit 1) Manual Steering Air Conditioning Compressor Serpentine Belt ACDelco 4K378
2000-2004Kia Spectra Kia Spectra L4 1.8L (8th Vin Digit 1) Manual Steering Air Conditioning Compressor Serpentine Belt ACDelco 4K378
1990-1993Mazda Miata Mazda Miata L4 1.6L (8th Vin Digit N) Air Conditioning Compressor & Power Steering Serpentine Belt ACDelco 4K378
2003-2005Mazda Miata Mazda Miata L4 1.8L (8th Vin Digit N) Air Conditioning Compressor & Power Steering Serpentine Belt ACDelco 4K378
1994-1995Mitsubishi Diamante Mitsubishi Diamante Sedan V6 3.0L Air Conditioning Compressor & Idler Pulley Serpentine Belt ACDelco 4K378
1996Mitsubishi Diamante Mitsubishi Diamante V6 3.0L Air Conditioning Compressor & Idler Pulley Serpentine Belt ACDelco 4K378
1994-1998Mitsubishi Galant Mitsubishi Galant L4 2.4L (Engine ID 4G64) Air Conditioning Compressor & Idler Pulley Serpentine Belt ACDelco 4K378
1995-1996Mitsubishi Montero Mitsubishi Montero V6 3.0L (8th Vin Digit H) Idler Pulley & Power Steering Pump Serpentine Belt ACDelco 4K378
1997-1998Mitsubishi Montero Sport Mitsubishi Montero Sport V6 3.0L Serpentine Belt ACDelco 4K378
1989Peugeot 405 Peugeot 405 L4 1.9L (8th Vin Digit 1) Alternator & Power Steering Pump Serpentine Belt ACDelco 4K378
1990-1991Peugeot 405 Peugeot 405 L4 1.9L (8th Vin Digit C) Alternator & Power Steering Pump Serpentine Belt ACDelco 4K378
1990-1991Peugeot 405 Peugeot 405 L4 1.9L (8th Vin Digit A) Alternator & Power Steering Pump Serpentine Belt ACDelco 4K378
1995-1998Pontiac Firefly Pontiac Firefly L4 1.3L (8th Vin Digit 9) Air Conditioning Compressor & Power Steering Serpentine Belt ACDelco 4K378
1998-2000Pontiac Firefly Pontiac Firefly L4 1.3L (8th Vin Digit 2) Air Conditioning Compressor & Power Steering Serpentine Belt ACDelco 4K378
2008Saab 9-7X Saab 9-7X V8 5.3L (8th Vin Digit M) Serpentine Belt ACDelco 4K378
1985-1989Subaru XT Subaru XT L4 1.8L (8th Vin Digit 7) Serpentine Belt ACDelco 4K378
1985-1987Subaru XT Subaru XT L4 1.8L (8th Vin Digit 4) Manual Steering Serpentine Belt ACDelco 4K378
1985-1989Subaru XT Subaru XT H4 1.8L (8th Vin Digit 4) without Air Conditioning Serpentine Belt ACDelco 4K378
1991Subaru XT Subaru XT H4 1.8L (8th Vin Digit 4) Serpentine Belt ACDelco 4K378
2006-2008Suzuki Grand Vitara Suzuki Grand Vitara V6 2.7L (8th Vin Digit N) Serpentine Belt ACDelco 4K378
1999-2002Suzuki Vitara Suzuki Vitara L4 1.6L (8th Vin Digit N) Air Conditioning Compressor & Power Steering Serpentine Belt ACDelco 4K378
Part #: 1AACD00057


Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

AC DELCO
Brand #: 4K378

How-to Video:

(09:09 min)