Replaces

Exhaust Pipe with Catalytic Converter Pair - 1AEMK00177

This new direct fit, aftermarket catalytic converter assembly is a great replacement. It is made of the highest grade materials for long lasting durability.

Specifications:

  • Fits LH (Driver Side) and RH (Passenger Side) FRONT
  • Front Exhaust Pipe Catalytic Converter Assembly
  • 2-piece design for easier installation
  • Connections:
    • Front Welded 3 Bolt Inlet Flange
    • Rear Welded 2-Bolt Outlet Flange
  • Replaces dealer part number: 19206638
  • U.S. EPA & Ministry of Environment (Canada) Certified
  • Built to strict quality control standards

Emissions Note:

Due to state emissions regulations, we cannot ship this item to the state of California as it is not C.A.R.B ( California Air Research Board) approved for use in this state.

Due to New York state emissions regulations, this item cannot be installed on a California emissions equipped vehicle in the state of New York.

All emissions information for a vehicle can be found on a tag under the hood. If the tag is missing, you can contact a dealership with your VIN to determine which emissions system your vehicle is equipped with.

5 Year Warranty

This item is backed by a 5 Year Warranty. In the event this item should fail during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser. Please keep your invoice for proof of this warranty.

  1. step : Removing the Catalytic Converters (0:50)
    • Disconnect all four O2 sensor wiring connectors
    • Move the O2 sensors aside to allow you space to remove the catalytic converter
    • Remove the three 15mm nuts from the front driver side exhaust flange
    • Remove the three 15mm nuts from the front passenger side exhaust flange
    • Remove the two 15mm nuts from the rear flange
    • Separate the catalytic converter from the tailpipe with a pry bar
    • Place a block of wood under the transfer case
    • Support the transmission with a jack
    • Remove the four 21mm bolts from the transmission cross member
    • Remove the two 15mm nuts that hold the cross member to the transmission mount
    • Remove the transmission cross member
    • If you are not reusing your catalytic converters, leave the cross member in place and cut the catalytic converters with a reciprocating saw
    • Pull the catalytic converters down and off the vehicle
  2. step : Transferring the O2 Sensors to the New Catalytic Converters (6:33)
    • Remove the O2 sensors from the old catalytic converters with a 22mm wrench
    • Install the O2 sensors into their respective positions in the new catalytic converters
  3. step : Removing the Transmission Cross Member (8:21)
    • If you did not remove the cross member before removing the catalytic converter, do so now
    • Place a block of wood under the transfer case
    • Support the transmission with a jack
    • Remove the four 21mm bolts from the transmission cross member
    • Remove the two 15mm nuts that hold the cross member to the transmission mount
    • Remove the transmission cross member
  4. step : Installing the Catalytic Converter (9:37)
    • Lift the passenger side catalytic converter into place
    • Remove the gasket from the exhaust with a flat blade screwdriver
    • Line up the new gasket with the exhaust manifold
    • Fasten the three 15mm nuts onto the passenger side exhaust studs
    • Lift the driver side catalytic converter into place
    • Line up the driver side catalytic converter where it connects to the passenger side catalytic converter
    • Fasten the three 15mm nuts onto the driver side exhaust studs
  5. step : Installing the Cross Member (11:06)
    • Lift the cross member into place
    • Support the cross member with a jack
    • Fasten the two 15mm nuts that hold the cross member to the transmission mount
    • Fasten the four 21mm bolts into the cross member
  6. step : Connecting the Catalytic Converter (12:48)
    • Fit the catalytic converter flange to the tailpipe flange
    • Install the 15mm nuts onto the exhaust studs
    • Replace the studs with bolts if necessary
    • Install the exhaust clamp around the slip joint
    • Fasten the two 14mm nuts onto the exhaust clamp
    • Thread the O2 sensor wires away from moving parts
    • Connect the O2 sensor wiring connectors
  7. step : Checking the Exhaust (15:26)
    • Start the engine
    • Listen for exhaust leaks
    • Clear the check engine light with a scan tool
    • If no scan tool is available, disconnect the battery for an hour to reset the codes

Tools needed for replacement:

    General Tools

  • Jack Stands
  • Hammer
  • Sawzall
  • Floor Jack

  • Materials, Fluids, and Supplies

  • Safety Glasses
  • Block of Wood

  • Ratchets & Related

  • Swivel
  • Ratchet
  • Torque Wrench
  • Socket Driver
  • Socket Extensions
  • 1/2 Inch Breaker Bar

  • Screwdrivers & Related

  • Pry Bar
  • Flat Blade Screwdriver

  • Sockets - Metric

  • Complete Metric Socket Set

  • Wrenches - Metric

  • Complete Metric Wrench Set

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Browse 1 question Browse 1 question and 3 answers
Does installing this require welding anything or does it bolt or clamp on? And how easy is this install?
Thomas on Apr 13, 2016
BEST ANSWER: No welding necessary, you will have to enlarge the y connection inlet to enable the drivers side exhaust to fit into it. There is also a center frame member that makes it a much easier procedure if it is unbolted first. I was fortunate that the exhaust manifold studs and bolts came apart without stripping. t. I used an air impact wrench to do the work. I am very happy with the quality of all their parts and this replacement solved my check engine light problem.

Vehicle Fit

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  • 2007 GMC Sierra 1500 Classic Exhaust Pipe with Catalytic Converter V6 4.3L (8th Vin Digit X) Pair
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Part #: 1AEMK00177

Out of Stock

How-to Video:

(16:19 min)