Specifications:

  • Brand New ACDelco Water Pump Gaskets
  • Comes as a Pair
    • Includes both gaskets
    • Enough to do the job on one vehicle
  • Built to strict quality control standards

Part Details

  • Quantity: Pair

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser.

  1. step : Remove Intake Tube (1:10)
    • Start by using an 8 millimeter socket wrench to disconnect the negative battery cable.
    • Loosen the two clamps by the throttle body and air box.
    • Use a small flathead screwdriver to break the seal.
    • Lift the intake tube out.
  2. step : Remove fan shroud (1:50)
    • Remove the two 10 millimeter bolts with your socket wrench.
    • Unclip the small hose from the shroud.
    • Remove pins around fan shroud and gently work hose back and forth to pull fan shroud out.
  3. step : Remove fan (3:00)
    • Use a large adjustable wrench on the center nut.
    • Apply force on the wrench to break it loose.
    • Carefully pull fan out and set aside.
  4. step : Remove serpentine belt (3:30)
    • Start by double checking that your routing diagram is legible.
    • Draw out your own if it isn't to save time and confusion later.
    • Use your socket ratchet to loosen the 15 millimeter bolt located on the tensioner.
    • Turn your ratchet clockwise to release the tension and remove the belt.
  5. step : Drain radiator and disconnect hoses from water pump (4:33)
    • Release lower radiator hose and drain fluid into your drain pan.
    • Use your pliers to slowly squeeze the clamp and pull it back to drain the fluid into your catch pan.
    • Disconnect radiator hose by loosening and pulling back the clamp.
    • Use your small flathead screwdriver to gently pry up the hose and wiggle it off.
    • Make sure any water has drained out of it and set aside. Finally disconnect heater hoses.
    • Ensure that your catch pan is underneath to catch any water.
  6. step : Remove tension arm (6:40)
    • Use your wrench to remove the tension arm from the water pump.
    • Set aside.
  7. step : Remove water neck and remove pump (6:56)
    • Use your 10 millimeter socket wrench to remove the two bolts.
    • Use your torque wrench to remove the six bolts on the water pump.
    • Then using a sharp razor blade, scrape off any residual gasket material that could create a bad seal.
  8. step : Install 1A Auto water pump (8:18)
    • Put the new gasket plates on your 1A Auto water pump using the two bolts.
    • Seat the new pump and place bolts and use your torque wrench to gently snug them up.
    • Go back and torque them between 22 and 24 foot pounds.
    • Take the new O-ring that came with your 1A Auto and put it on your thermostat housing.
  9. step : Reassemble (10:10)
    • Reconnect all your hoses.
    • Put your belt tensioner back on and put your serpentine belt back on using your diagram.
    • Reassemble your fan, fan shroud, and intake pipe.
    • Finally refill with a 50/50 mixture of Dex Cool.
    • Listen for the sound of any leaks to make sure everything is connected properly.
    • Finally, reconnect the battery and start up the engine and run it for 30 seconds or so to circulate the coolant.
    • Double check your level of coolant to make sure it is at the right spot, and you are good to go.

Tools needed for replacement:

    General Tools

  • Drain Pan
  • Razor Blade / Gasket Scraper

  • Ratchets & Related

  • Ratchet

  • Screwdrivers & Related

  • Flat Blade Screwdriver

  • Sockets - Metric

  • 10mm Socket
  • 15mm Socket
  • 8mm Socket

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Vehicle Fit

Year Make Model Description
2004Buick Rainier Buick Rainier Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2005-2007Buick Rainier Buick Rainier Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2009-2015Cadillac CTS Cadillac CTS Water Pump Gasket Pair V8 6.2L ACDelco 251-663
2004-2005Cadillac CTS-V Cadillac CTS-V Water Pump Gasket Pair V8 5.7L ACDelco 251-663
2006-2007Cadillac CTS-V Cadillac CTS-V Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2002-2005Cadillac Escalade Cadillac Escalade Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2002-2006Cadillac Escalade Cadillac Escalade Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2007Cadillac Escalade Cadillac Escalade Water Pump Gasket Pair V8 6.2L ACDelco 251-663
2008Cadillac Escalade Cadillac Escalade Water Pump Gasket Pair V8 6.2L ACDelco 251-663
2009Cadillac Escalade Cadillac Escalade Water Pump Gasket Pair V8 6.2L ACDelco 251-663
2010-2014Cadillac Escalade Cadillac Escalade Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2010-2014Cadillac Escalade Cadillac Escalade Water Pump Gasket Pair V8 6.2L ACDelco 251-663
2003-2006Cadillac Escalade ESV Cadillac Escalade ESV Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2007Cadillac Escalade ESV Cadillac Escalade ESV Water Pump Gasket Pair V8 6.2L ACDelco 251-663
2008Cadillac Escalade ESV Cadillac Escalade ESV Water Pump Gasket Pair V8 6.2L ACDelco 251-663
2009Cadillac Escalade ESV Cadillac Escalade ESV Water Pump Gasket Pair V8 6.2L ACDelco 251-663
2010-2014Cadillac Escalade ESV Cadillac Escalade ESV Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2010-2014Cadillac Escalade ESV Cadillac Escalade ESV Water Pump Gasket Pair V8 6.2L ACDelco 251-663
2002-2006Cadillac Escalade EXT Cadillac Escalade EXT Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2007Cadillac Escalade EXT Cadillac Escalade EXT Water Pump Gasket Pair V8 6.2L ACDelco 251-663
2008Cadillac Escalade EXT Cadillac Escalade EXT Water Pump Gasket Pair V8 6.2L ACDelco 251-663
2009Cadillac Escalade EXT Cadillac Escalade EXT Water Pump Gasket Pair V8 6.2L ACDelco 251-663
2010-2013Cadillac Escalade EXT Cadillac Escalade EXT Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2010-2013Cadillac Escalade EXT Cadillac Escalade EXT Water Pump Gasket Pair V8 6.2L ACDelco 251-663
2002-2004Chevy Avalanche 1500 Chevy Avalanche 1500 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2005-2006Chevy Avalanche 1500 Chevy Avalanche 1500 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2007-2009Chevy Avalanche 1500 Chevy Avalanche 1500 Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2007-2008Chevy Avalanche 1500 Chevy Avalanche 1500 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2007-2008Chevy Avalanche 1500 Chevy Avalanche 1500 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2007-2008Chevy Avalanche 1500 Chevy Avalanche 1500 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2009-2013Chevy Avalanche 1500 Chevy Avalanche 1500 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2009-2011Chevy Avalanche 1500 Chevy Avalanche 1500 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2009Chevy Avalanche 1500 Chevy Avalanche 1500 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2012-2013Chevy Avalanche 1500 Chevy Avalanche 1500 Water Pump Gasket Pair V8 5.3L (8th Vin Digit 7) ACDelco 251-663
1999-2002Chevy Camaro Chevy Camaro Water Pump Gasket Pair V8 5.7L ACDelco 251-663
2010-2015Chevy Camaro Chevy Camaro Water Pump Gasket Pair V8 6.2L ACDelco 251-663
2010-2013Chevy Camaro Chevy Camaro Water Pump Gasket Pair V8 6.2L ACDelco 251-663
2009Chevy Colorado Chevy Colorado Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2010-2012Chevy Colorado Chevy Colorado Water Pump Gasket Pair V8 5.3L ACDelco 251-663
1999-2004Chevy Corvette Chevy Corvette Water Pump Gasket Pair V8 5.7L ACDelco 251-663
2001-2004Chevy Corvette Chevy Corvette Water Pump Gasket Pair V8 5.7L ACDelco 251-663
2005-2007Chevy Corvette Chevy Corvette Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2007-2009Chevy Corvette Chevy Corvette Water Pump Gasket Pair V8 4.8L V8 7.0L ACDelco 251-663
2008-2013Chevy Corvette Chevy Corvette Water Pump Gasket Pair V8 6.2L ACDelco 251-663
2003-2007Chevy Express 1500 Van Chevy Express 1500 Van Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2007Chevy Express 1500 Van Chevy Express 1500 Van Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2008Chevy Express 1500 Van Chevy Express 1500 Van Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2009-2014Chevy Express 1500 Van Chevy Express 1500 Van Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2003-2005Chevy Express 2500 Van Chevy Express 2500 Van Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2003-2007Chevy Express 2500 Van Chevy Express 2500 Van Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2003-2007Chevy Express 2500 Van Chevy Express 2500 Van Water Pump Gasket Pair V8 4.8L ACDelco 251-663
2008-2009Chevy Express 2500 Van Chevy Express 2500 Van Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2008-2009Chevy Express 2500 Van Chevy Express 2500 Van Water Pump Gasket Pair V8 4.8L ACDelco 251-663
2010-2014Chevy Express 2500 Van Chevy Express 2500 Van Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2010-2014Chevy Express 2500 Van Chevy Express 2500 Van Water Pump Gasket Pair V8 4.8L ACDelco 251-663
2003-2007Chevy Express 3500 Van Chevy Express 3500 Van Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2005-2007Chevy Express 3500 Van Chevy Express 3500 Van Water Pump Gasket Pair V8 4.8L ACDelco 251-663
2008-2009Chevy Express 3500 Van Chevy Express 3500 Van Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2008-2009Chevy Express 3500 Van Chevy Express 3500 Van Water Pump Gasket Pair V8 4.8L ACDelco 251-663
2010-2014Chevy Express 3500 Van Chevy Express 3500 Van Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2010-2014Chevy Express 3500 Van Chevy Express 3500 Van Water Pump Gasket Pair V8 4.8L ACDelco 251-663
2006Chevy Impala Chevy Impala Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2006Chevy Monte Carlo Chevy Monte Carlo Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2003Chevy SSR Chevy SSR Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2004Chevy SSR Chevy SSR Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2005-2006Chevy SSR Chevy SSR Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
1999-2007Chevy Silverado 1500 Chevy Silverado 1500 Water Pump Gasket Pair V8 4.8L ACDelco 251-663
1999-2000Chevy Silverado 1500 Chevy Silverado 1500 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
1999-2007Chevy Silverado 1500 Chevy Silverado 1500 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2001-2007Chevy Silverado 1500 Chevy Silverado 1500 Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2002-2006Chevy Silverado 1500 Chevy Silverado 1500 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2005Chevy Silverado 1500 Chevy Silverado 1500 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2006Chevy Silverado 1500 Chevy Silverado 1500 Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2007Chevy Silverado 1500 Chevy Silverado 1500 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2007-2009Chevy Silverado 1500 Chevy Silverado 1500 Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2007-2009Chevy Silverado 1500 Chevy Silverado 1500 Water Pump Gasket Pair V8 4.8L ACDelco 251-663
2007-2009Chevy Silverado 1500 Chevy Silverado 1500 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2007-2008Chevy Silverado 1500 Chevy Silverado 1500 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2008-2009Chevy Silverado 1500 Chevy Silverado 1500 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2008-2011Chevy Silverado 1500 Chevy Silverado 1500 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2009-2013Chevy Silverado 1500 Chevy Silverado 1500 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2009-2013Chevy Silverado 1500 Chevy Silverado 1500 Water Pump Gasket Pair V8 6.2L ACDelco 251-663
2010-2013Chevy Silverado 1500 Chevy Silverado 1500 Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2010-2013Chevy Silverado 1500 Chevy Silverado 1500 Water Pump Gasket Pair V8 4.8L ACDelco 251-663
2012-2013Chevy Silverado 1500 Chevy Silverado 1500 Water Pump Gasket Pair V8 5.3L (8th Vin Digit 7) ACDelco 251-663
2007Chevy Silverado 1500 Classic Chevy Silverado 1500 Classic Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2007Chevy Silverado 1500 Classic Chevy Silverado 1500 Classic Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2007Chevy Silverado 1500 Classic Chevy Silverado 1500 Classic Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2007Chevy Silverado 1500 Classic Chevy Silverado 1500 Classic Water Pump Gasket Pair V8 4.8L ACDelco 251-663
2007Chevy Silverado 1500 Classic Chevy Silverado 1500 Classic Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2001-2003Chevy Silverado 1500 HD Chevy Silverado 1500 HD Water Pump Gasket Pair ACDelco 251-663
2005-2006Chevy Silverado 1500 HD Chevy Silverado 1500 HD Water Pump Gasket Pair ACDelco 251-663
2007Chevy Silverado 1500 HD Classic Chevy Silverado 1500 HD Classic Water Pump Gasket Pair ACDelco 251-663
1999-2004Chevy Silverado 2500 Chevy Silverado 2500 Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2001-2004Chevy Silverado 2500 Chevy Silverado 2500 Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2001-2006Chevy Silverado 2500 HD Chevy Silverado 2500 HD Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2001-2004Chevy Silverado 2500 HD Chevy Silverado 2500 HD Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2007-2010Chevy Silverado 2500 HD Chevy Silverado 2500 HD Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2009Chevy Silverado 2500 HD Chevy Silverado 2500 HD Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2010-2014Chevy Silverado 2500 HD Chevy Silverado 2500 HD Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2007Chevy Silverado 2500 HD Classic Chevy Silverado 2500 HD Classic Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2001-2006Chevy Silverado 3500 Chevy Silverado 3500 Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2007-2009Chevy Silverado 3500 Chevy Silverado 3500 Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2010Chevy Silverado 3500 Chevy Silverado 3500 Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2011-2014Chevy Silverado 3500 Chevy Silverado 3500 Water Pump Gasket Pair (8th Vin Digit G) V8 6.0L ACDelco 251-663
2007Chevy Silverado 3500 Classic Chevy Silverado 3500 Classic Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2000-2005Chevy Suburban 1500 Chevy Suburban 1500 Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2002-2006Chevy Suburban 1500 Chevy Suburban 1500 Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2006Chevy Suburban 1500 Chevy Suburban 1500 Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2007-2011Chevy Suburban 1500 Chevy Suburban 1500 Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2007-2009Chevy Suburban 1500 Chevy Suburban 1500 Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2007-2009Chevy Suburban 1500 Chevy Suburban 1500 Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2007-2008Chevy Suburban 1500 Chevy Suburban 1500 Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2007-2008Chevy Suburban 1500 Chevy Suburban 1500 Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2009-2013Chevy Suburban 1500 Chevy Suburban 1500 Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2009Chevy Suburban 1500 Chevy Suburban 1500 Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2012-2013Chevy Suburban 1500 Chevy Suburban 1500 Water Pump Gasket Pair V8 5.3L (8th Vin Digit 7) ACDelco 251-663
2000-2006Chevy Suburban 2500 Chevy Suburban 2500 Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2006Chevy Suburban 2500 Chevy Suburban 2500 Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2007-2009Chevy Suburban 2500 Chevy Suburban 2500 Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2007-2009Chevy Suburban 2500 Chevy Suburban 2500 Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2010-2013Chevy Suburban 2500 Chevy Suburban 2500 Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2000-2006Chevy Tahoe Chevy Tahoe Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2000-2006Chevy Tahoe Chevy Tahoe Water Pump Gasket Pair for V8 4.8L ACDelco 251-663
2002-2006Chevy Tahoe Chevy Tahoe Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2007-2008Chevy Tahoe Chevy Tahoe Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2007-2008Chevy Tahoe Chevy Tahoe Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2007-2009Chevy Tahoe Chevy Tahoe Water Pump Gasket Pair for V8 4.8L ACDelco 251-663
2009-2014Chevy Tahoe Chevy Tahoe Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2009Chevy Tahoe Chevy Tahoe Water Pump Gasket Pair for V8 6.2L ACDelco 251-663
2009Chevy Tahoe Chevy Tahoe Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2010Chevy Tahoe Chevy Tahoe Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2010Chevy Tahoe Chevy Tahoe Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2006-2009Chevy Trailblazer Chevy Trailblazer Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2006-2008Chevy Trailblazer Chevy Trailblazer Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2003-2004Chevy Trailblazer EXT Chevy Trailblazer EXT Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2005Chevy Trailblazer EXT Chevy Trailblazer EXT Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2009GMC Canyon GMC Canyon Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2010-2012GMC Canyon GMC Canyon Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2005-2009GMC Envoy GMC Envoy Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2003-2004GMC Envoy XL GMC Envoy XL Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2003-2007GMC Savana 1500 Van GMC Savana 1500 Van Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2007GMC Savana 1500 Van GMC Savana 1500 Van Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2008-2014GMC Savana 1500 Van GMC Savana 1500 Van Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2003-2005GMC Savana 2500 Van GMC Savana 2500 Van Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2003-2007GMC Savana 2500 Van GMC Savana 2500 Van Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2003-2007GMC Savana 2500 Van GMC Savana 2500 Van Water Pump Gasket Pair for V8 4.8L ACDelco 251-663
2008-2009GMC Savana 2500 Van GMC Savana 2500 Van Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2008-2009GMC Savana 2500 Van GMC Savana 2500 Van Water Pump Gasket Pair for V8 4.8L ACDelco 251-663
2010-2014GMC Savana 2500 Van GMC Savana 2500 Van Water Pump Gasket Pair for V8 4.8L ACDelco 251-663
2010-2014GMC Savana 2500 Van GMC Savana 2500 Van Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2003-2007GMC Savana 3500 Van GMC Savana 3500 Van Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2004-2007GMC Savana 3500 Van GMC Savana 3500 Van Water Pump Gasket Pair for V8 4.8L ACDelco 251-663
2008-2009GMC Savana 3500 Van GMC Savana 3500 Van Water Pump Gasket Pair for V8 4.8L ACDelco 251-663
2008-2009GMC Savana 3500 Van GMC Savana 3500 Van Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2010-2014GMC Savana 3500 Van GMC Savana 3500 Van Water Pump Gasket Pair for V8 4.8L ACDelco 251-663
2010-2014GMC Savana 3500 Van GMC Savana 3500 Van Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
1999-2006GMC Sierra 1500 GMC Sierra 1500 Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
1999-2006GMC Sierra 1500 GMC Sierra 1500 Water Pump Gasket Pair for V8 4.8L ACDelco 251-663
2001-2006GMC Sierra 1500 GMC Sierra 1500 Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2001GMC Sierra 1500 GMC Sierra 1500 Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2002-2006GMC Sierra 1500 GMC Sierra 1500 Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2005GMC Sierra 1500 GMC Sierra 1500 Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2006GMC Sierra 1500 GMC Sierra 1500 Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2007-2008GMC Sierra 1500 GMC Sierra 1500 Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2007-2009GMC Sierra 1500 GMC Sierra 1500 Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2007-2009GMC Sierra 1500 GMC Sierra 1500 Water Pump Gasket Pair for V8 4.8L ACDelco 251-663
2007-2009GMC Sierra 1500 GMC Sierra 1500 Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2007GMC Sierra 1500 GMC Sierra 1500 Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2007GMC Sierra 1500 GMC Sierra 1500 Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2008-2009GMC Sierra 1500 GMC Sierra 1500 Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2008-2009GMC Sierra 1500 GMC Sierra 1500 Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2009-2013GMC Sierra 1500 GMC Sierra 1500 Water Pump Gasket Pair for V8 6.2L ACDelco 251-663
2009-2013GMC Sierra 1500 GMC Sierra 1500 Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2010-2013GMC Sierra 1500 GMC Sierra 1500 Water Pump Gasket Pair (8th Vin Digit A) V8 4.8L ACDelco 251-663
2010-2013GMC Sierra 1500 GMC Sierra 1500 Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2012-2013GMC Sierra 1500 GMC Sierra 1500 Water Pump Gasket Pair V8 5.3L (8th Vin Digit 7) ACDelco 251-663
2007GMC Sierra 1500 Classic GMC Sierra 1500 Classic Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2007GMC Sierra 1500 Classic GMC Sierra 1500 Classic Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2007GMC Sierra 1500 Classic GMC Sierra 1500 Classic Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2007GMC Sierra 1500 Classic GMC Sierra 1500 Classic Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2007GMC Sierra 1500 Classic GMC Sierra 1500 Classic Water Pump Gasket Pair for V8 4.8L ACDelco 251-663
2001-2003GMC Sierra 1500 HD GMC Sierra 1500 HD Water Pump Gasket Pair ACDelco 251-663
2005-2006GMC Sierra 1500 HD GMC Sierra 1500 HD Water Pump Gasket Pair ACDelco 251-663
2007GMC Sierra 1500 HD Classic GMC Sierra 1500 HD Classic Water Pump Gasket Pair ACDelco 251-663
1999-2004GMC Sierra 2500 GMC Sierra 2500 Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
1999-2000GMC Sierra 2500 GMC Sierra 2500 Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2001-2004GMC Sierra 2500 GMC Sierra 2500 Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2001-2004GMC Sierra 2500 HD GMC Sierra 2500 HD Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2007-2008GMC Sierra 2500 HD GMC Sierra 2500 HD Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2009GMC Sierra 2500 HD GMC Sierra 2500 HD Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2001-2006GMC Sierra 3500 GMC Sierra 3500 Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2007-2009GMC Sierra 3500 GMC Sierra 3500 Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2007GMC Sierra 3500 Classic GMC Sierra 3500 Classic Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2000-2006GMC Yukon GMC Yukon Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2000-2006GMC Yukon GMC Yukon Water Pump Gasket Pair for V8 4.8L ACDelco 251-663
2002-2006GMC Yukon GMC Yukon Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2004-2006GMC Yukon GMC Yukon Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2007-2009GMC Yukon GMC Yukon Water Pump Gasket Pair for V8 4.8L ACDelco 251-663
2007-2014GMC Yukon GMC Yukon Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2007-2008GMC Yukon GMC Yukon Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2007GMC Yukon GMC Yukon Water Pump Gasket Pair for V8 6.2L ACDelco 251-663
2008GMC Yukon GMC Yukon Water Pump Gasket Pair for V8 6.2L ACDelco 251-663
2009GMC Yukon GMC Yukon Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2009GMC Yukon GMC Yukon Water Pump Gasket Pair for V8 6.2L ACDelco 251-663
2009-2010GMC Yukon GMC Yukon Water Pump Gasket Pair for V8 5.3L ACDelco 251-663
2010-2014GMC Yukon GMC Yukon Water Pump Gasket Pair for V8 6.0L ACDelco 251-663
2010GMC Yukon GMC Yukon Water Pump Gasket Pair for V8 6.2L ACDelco 251-663
2000-2005GMC Yukon XL 1500 GMC Yukon XL 1500 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2002-2006GMC Yukon XL 1500 GMC Yukon XL 1500 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2007-2013GMC Yukon XL 1500 GMC Yukon XL 1500 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2007-2011GMC Yukon XL 1500 GMC Yukon XL 1500 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2007-2009GMC Yukon XL 1500 GMC Yukon XL 1500 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2000-2005GMC Yukon XL 2500 GMC Yukon XL 2500 Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2005-2006GMC Yukon XL 2500 GMC Yukon XL 2500 Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2007-2009GMC Yukon XL 2500 GMC Yukon XL 2500 Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2007-2009GMC Yukon XL 2500 GMC Yukon XL 2500 Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2010-2013GMC Yukon XL 2500 GMC Yukon XL 2500 Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2003-2007Hummer H2 Hummer H2 Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2008Hummer H2 Hummer H2 Water Pump Gasket Pair V8 6.2L ACDelco 251-663
2009Hummer H2 Hummer H2 Water Pump Gasket Pair V8 6.2L ACDelco 251-663
2009Hummer H3 Hummer H3 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2010Hummer H3 Hummer H3 Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2009Hummer H3T Hummer H3T Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2010Hummer H3T Hummer H3T Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2003-2004Isuzu Ascender Isuzu Ascender Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2005-2006Isuzu Ascender Isuzu Ascender Water Pump Gasket Pair V8 5.3L ACDelco 251-663
2002Pontiac Firebird Pontiac Firebird Water Pump Gasket Pair V8 5.7L ACDelco 251-663
2008-2009Pontiac G8 Pontiac G8 Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2009Pontiac G8 Pontiac G8 Water Pump Gasket Pair V8 6.2L ACDelco 251-663
2004Pontiac GTO Pontiac GTO Water Pump Gasket Pair V8 5.7L ACDelco 251-663
2005Pontiac GTO Pontiac GTO Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2006Pontiac GTO Pontiac GTO Water Pump Gasket Pair V8 6.0L ACDelco 251-663
2005-2006Pontiac Grand Prix Pontiac Grand Prix Water Pump Gasket Pair V8 5.3L ACDelco 251-663

This part replaces:

  • ACDelco 251-663
  • OE # 12588372
  • OE # 12630223
  • OE # 12559271
  • OE # 12610311
Only 2 left in stock
Part #: ACEEK00001


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 #: 251-663

How-to Video:

(12:46 min)