Catalytic Converter | SuperMotors.net Forums

Member since Aug 2012
4 posts
Elmo, TX, USA

Nov 11, 2012 at 11:16 PM

My 2003 CVPI is throwing code 420, Rt catalytic converter. Can I replace it with an after market or do I need to get the $250 assembly? It's running good, gets 22mpg on the highway, I just can't pass inspection with it.

jdmeaux

Member since Jan 2009
525 posts
Lafayette, LA, USA
1 vehicle in the registry

Nov 12, 2012 at 6:50 AM

Any of the aftermarket cats will work. I would make sure to get a hi-flo version to get installed. And replace both at the same time. Try www.SummitRacing.com or www.Jegs.com for the better prices. Also, you may take a shot at www.RockAuto.com for tons of OEM parts. You may find an OEM cat for about the price of the aftermarket at RockAuto.

A good muffler shop should be able to search to find a replacement that flows better than the original, or from another model that flows better.

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PROUD MEMBER of www.crownvic.net

It's just a SUPER-DUTY Mustang GT Sedan. 198K miles and still rolling HARD.

1997 Crown Victoria P71 SVT *** ex-US Marshall service (the CAR)
STOCK?? I bet it was modified.

13.26 @ 107.24 MPH 1/4 mi w/ me, tools, & full tank of 93 octane

I added CAI, NICHE 19 X 8.5 " wheels with 245/45ZR 19 rubbers, and completely rebuilt the front end with poly bushings, Kooks headers, 2 1/4inch exhaust, TCI 2200-2400 rpm Stall converter

.PLANS:: engine upgrade, 5.4L 2v stroker, rebuild interior in leather w/ buckets, thinking about turbos