Cadillac CTS Catalytic Converter Pair - 1AEEK00662

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Vehicle Fit

Part Details

  • Quantity:   Pair

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


  • Comes as a PAIR
    • Fits LH (Driver Side) and RH (Passenger Side)
  • High quality stainless steel
  • Includes all flanges for direct installation
  • EPA Certified
  • Built to strict quality control standards



Item Condition: New

5 Year Warranty

This item is backed by our 5-year warranty. In the event this item should fail during intended use, we will replace the part free of charge.

Emissions Note:

Due to state emissions regulations:

We cannot ship this item to California, as it is not California Air Research Board approved.

In the state of New York, this item cannot be installed on California emissions equipped vehicles.

In the state of Maine, this item cannot be sold for or installed on a 2001 model year or newer, California emissions equipped vehicle.

Emissions information can be found on a tag under the hood or from a dealership based on your VIN.

  1. step : Removing the Catalytic Converter (0:47)
    • Raise and support the vehicle
    • Remove the four 14mm bolts from the exhaust flanges
    • Allow the exhaust to hang
    • Loosen the O2 sensor with an O2 sensor socket and ratchet
    • Twist off the O2 sensor by hand
    • Remove the 10mm bolt from the heat shield
    • Pull back the heat shield
    • Remove the two 13mm bolts from the exhaust manifold
    • Pull the catalytic converter down and out
  2. step : Installing the Catalytic Converter (2:18)
    • Put the 13mm bolts into place on the exhaust manifold
    • Lift the catalytic converter into place
    • Start the 13mm nuts by hand
    • Tighten the 13mm nuts and bolts
    • Put the heat shield into place
    • Insert the 10mm bolt for the heat shield
    • Start the O2 sensor by hand
    • Tighten the O2 sensor with an O2 sensor socket
    • Lift the exhaust into place
    • Insert the 14mm bolts into the exhaust flanges
    • Tighten the 14mm bolts to 16 foot-pounds of torque

Tools needed for replacement:

    Ratchets & Related

  • Ratchet
  • Torque Wrench
  • Socket Extensions

  • Sockets - Metric

  • 7mm Socket
  • 10mm Socket
  • 13mm Socket
  • 14mm Socket

  • Specialty Tools

  • O2 Sensor Socket

  • Wrenches - Metric

  • 22mm Wrench
  • 13mm Wrench

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Customer Q&A
Ask a question to 1A Auto customers who purchased the product
Will these pass California smog?
Shawn E September 7, 2016
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 the state of California.
Brian F September 7, 2016
I recently purchased the set, not sure if I selected the correct vehicle option at checkout. Does it matter if I have a 3.6 or 2.8L vehicle for this part to match?
Rickey G March 29, 2017
This will fit either the 2.8L or 3.6L engine for year model CTS 2005 - 2007. If your vehicle is a 2004 model year, these parts would be specific for only the 3.6L engine.
Alex P March 30, 2017
Yes it does. Different engines have varying degrees of of output
JAMES H March 30, 2017
Year Make Model Description
2004-2007Cadillac CTS Cadillac CTS V6 3.6L Catalytic Converter Pair
2005-2007Cadillac CTS Cadillac CTS V6 2.8L Catalytic Converter Pair
Part #: 1AEEK00662

Out of Stock