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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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Flowmaster Universal Catalytic Converters - 49-State Legal Reviews


Flowmaster Cats

Reviewed By Jonathan G (KINGWOOD, TX) Reviewed for a 2005 Mercury Mountaineer —7/30/2014 8:52 PM

Replaced the OEM primary cats with the Flowmasters and got a high quality product for a very reasonable cost. Very happy with the end result.

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


Great product

Reviewed By Dwayne P (East Orange, NJ) Reviewed for a 2003 Chevy Suburban —11/25/2014 10:19 PM

This ties in really well with my volant intake really great product it's like my truck is now Asthma free, very throaty through out the RPM range. Thanks AA.

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Year Range For Mercury Grand Marquis Catalytic Converters