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Mercury Grand Marquis Catalytic Converters

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Latest Customer Reviews

Magnaflow Catalytic Converters - 49 State Legal Reviews


Better than stock

Reviewed By Jason H (Carrollton, TX) Reviewed for a 1988 Mercury Grand Marquis —6/9/2009 8:42 PM

But not high flow. They allow a little better flow than the original converters, but not much more. They do sound better though. If I can get true duals on my car, they may work even better and the y pipe may be the main issue I'm having. Installation was a cake walk. Getting the old ones off was a pain, but these went on very easily. Would have been better if they matched up to the OE air injection without modification, but that's not a big deal.

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Eastern Catalytic Direct-fit Catalytic Converters - 49-State Legal Reviews


Easy direct fit

Reviewed By Gregory W (Suwanee, GA) Reviewed for a 2001 Lincoln LS —5/17/2015 5:57 AM

Easy installation and a perfect match. Everything lined up properly. The slip joint was a little tight but using pb blaster or something else as a lubricant will help it slide in. Don't waste your time with the universal, it has no o2 sensor bung. This one has the pre and post cat o2 sensor bungs.

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Flowmaster Direct-fit Catalytic Converters - 49-State Legal Reviews


awsome

Reviewed By Jeremias V (Bronx, NY) —4/27/2015 7:57 PM

I got an 99 expo even though I have headers on it I felt the difference in sound & performance with these cats yea it's a 49 state product I still put them on & past inspection in NY plus I'm a Ford & flowmaster man also gota 89 mustang gt & 89 Bronco with FLOWMASTERS

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Year Range For Mercury Grand Marquis Catalytic Converters