EXTERIOR
INTERIOR
LIGHTS
PERFORMANCE
SUSPENSION
BRAKES
DRIVETRAIN
AUDIO
WHEELS
GARAGE

Mercury Grand Marquis Catalytic Converters

 Select Your Vehicle





Mercury Grand Marquis Catalytic Converters

1 - 12 of 123
Sort by:




Fits: 2008 Mercury Grand Marquis, 2007 Mercury Grand Marquis, 2005 Mercury Grand Marquis, 2006 Mercury Grand Marquis, 2004 Mercury Grand Marquis

PART# 542004

Price: $185.67
Qty: Each

Free Shipping!
*Continental U.S. only.


Fits: 2000 Mercury Grand Marquis; 4.6, 8V, 1998 Mercury Grand Marquis; 4.6, 8V, 1997 Mercury Grand Marquis; 4.6, 8V, 1995 Mercury Grand Marquis; 4.6, 8V, 20 ...

PART# 23327

Ca Legality: 49-State Legal (Ex. CA)
Price: $244.65
Qty: Each

Free Shipping!
*Continental U.S. only.


Fits: 2004 Mercury Marauder, 2003 Mercury Grand Marquis, 2005 Mercury Grand Marquis, 2004 Mercury Grand Marquis

PART# 454000

Price: $470.89
Qty: Each

Free Shipping!
*Continental U.S. only.


Fits: 2005 Mercury Grand Marquis; 4.6, 8V, 2007 Subaru Impreza; 2.5, 4H, 1997 Nissan Maxima; 3, 6V, 2000 Mercury Sable; 3, 6V, 1999 Nissan Maxima; 3, 6V, 19 ...

PART# 99174HM

Price: $125.95
Qty: Each

Free Shipping!
*Continental U.S. only.


Fits: 2000 Mercury Grand Marquis; 4.6, 8V, 1998 Mercury Grand Marquis; 4.6, 8V, 1997 Mercury Grand Marquis; 4.6, 8V, 1995 Mercury Grand Marquis; 4.6, 8V, 20 ...

PART# 51314

Ca Legality: 49-State Legal (Ex. CA)
Price: $332.90
Qty: Each

Free Shipping!
*Continental U.S. only.


Fits: 1986 Mercury Grand Marquis; 5.8, 8V, 1984 Mercury Grand Marquis; 5, 8V, 1993 Mercury Topaz; 2.3, 4L, 1983 Mercury Grand Marquis; 5, 8V, 1994 Mercury T ...

PART# 94024

Price: $100.81
Qty: Each

Free Shipping!
*Continental U.S. only.


Fits: 2005 Mercury Grand Marquis; 4.6, 8V, 2007 Subaru Impreza; 2.5, 4H, 2000 Mercury Sable; 3, 6V, 2008 Saturn Outlook; 3.6, 6V, 2004 Mercury Sable; 3, 6V, ...

PART# 51174

Price: $139.49
Qty: Each

Free Shipping!
*Continental U.S. only.


Fits: 1995 Subaru Legacy, 1993 Mercury Grand Marquis, 1991 Mercury Colony Park, 1991 Mercury Grand Marquis, 1990 Mercury Colony Park, 1995 Nissan 240SX, 199 ...

PART# 37084

Price: $147.53
Qty: Each

Free Shipping!
*Continental U.S. only.


Fits: 2000 Mercury Grand Marquis; 4.6, 8V, 1998 Mercury Grand Marquis; 4.6, 8V, 1997 Mercury Grand Marquis; 4.6, 8V, 1995 Mercury Grand Marquis; 4.6, 8V, 20 ...

PART# 23328

Ca Legality: 49-State Legal (Ex. CA)
Price: $237.66
Qty: Each

Free Shipping!
*Continental U.S. only.


Fits: 2008 Mercury Grand Marquis, 2007 Mercury Grand Marquis, 2005 Mercury Grand Marquis, 2006 Mercury Grand Marquis, 2004 Mercury Grand Marquis

PART# 541010

Price: $713.17
Qty: Each

Free Shipping!
*Continental U.S. only.


Fits: 1986 Mercury Grand Marquis; 5, 8V, 1989 Mercury Grand Marquis; 5, 8V, 1988 Mercury Grand Marquis; 5, 8V, 1990 Mercury Grand Marquis; 5, 8V, 1987 Mercu ...

PART# 93368

Ca Legality: 49-State Legal (Ex. CA)
Inlet Size: 2"
Price: $166.45
Qty: Each

Free Shipping!
*Continental U.S. only.


Fits: 1991 Mercury Colony Park, 1991 Mercury Grand Marquis, 1990 Mercury Colony Park, 1988 Mercury Colony Park, 1989 Mercury Grand Marquis, 1986 Mercury Gra ...

PART# 337367

Price: $259.09
Qty: Each

Free Shipping!
*Continental U.S. only.



Not able to find what you are looking for?

1992-1994 Mercury Grand Marquis 4.6 Magnaflow Direct-Fit Catalytic Converter D/S

NEW Magnaflow 337384 Direct Fit Catalytic Converter Cat Mercury Grand Marquis

MERCURY GRAND MARQUIS V8 4.6L 1995-2002 PASSENGER SIDE CATALYTIC CONVERTER

Magnaflow 23331 Direct Fit Catalytic Converter Mercury Grand Marquis

NEW Magnaflow 23331 Direct Fit Catalytic Converter Cat Mercury Grand Marquis




At Andy's Auto Sport, we have a huge variety of Mercury Grand Marquis catalytic converters to ensure that you have every catalytic converter option available to you. We go out of our way to carry every major line of Mercury Grand Marquis catalytic converters, so that whether you are looking for replacement Mercury Grand Marquis catalytic converter or a performance high flow cat or anything in between, we've got it for you. Andy's Auto Sport is the ultimate shopping destination for your Mercury Grand Marquis catalytic converter needs!


WHY TO BUY?
NEWS


The good news is that, although replacement catalytic converters can be costly from your local dealership, aftermarket units (many times made by the same original equipment manufacturers) are substantially less expensive and can be purchased as direct-fit bolt-on units (assuming that the original converter was also bolted on) or weld-on units. Replacing your catalytic converter can restore power that has been lost due to a faulty original converter and will make your vehicle run better overall. In addition, a bad catalytic converter means that your exhaust is releasing harmful toxins into the atmosphere and environment, so getting a new one means you’re doing your part to keep the earth and its atmosphere clean.
NEWS


DID YOU KNOW?
Modern catalytic converters are much less restrictive than in days past, so much so that the antiquated (and illegal) method of "gutting" the converters of their internal structures has been deemed almost pointless on newer cars, as the performance gains are minimal, if any. Aftermarket high-flow catalytic converters are therefore a much better (and more responsible) choice for those seeking to upgrade their exhaust systems or replace a faulty converter.

So how do you know if your catalytic converter is on its way out? If your engine seems to be losing power or your temperature gauge reads a little high, one possible culprit could be that a rich condition is feeding excessive unburned fuel into the catalytic converter, which can overheat it as well as damage it. It is common to see your catalytic converter glowing orange/red when this condition is present. Another common sign of catalytic converter failure is the infamous "rotten egg" smell. Other common symptoms include: a lack of power, rough engine idle, or stalling. If you are replacing your catalytic converter due to any of the above circumstances, it is a good idea to also replace your oxygen sensor, since it plays a vital role in the air/fuel mixture ratio and may have also been damaged due to the same adverse conditions. Finally, physical damage can sometimes occur if a large rock or other object hits catalytic converter, resulting in a damaged ceramic core. This can often be heard, as smaller ceramic pieces will bounce around inside the converter housing. As you can imagine, this is often accompanied by a loss of power due to exhaust blockage.
FAQ's
Q: What is a hi-flow catalytic converter? Why buy one?
A: All stock catalytic converters are restrictive when it comes to exhaust flow, and they essentially place a choke hold on performance. The hi-flow catalytic converters on the market today have a higher flow capacity than factory units. Still able to pass emissions and gain horsepower, how can you go wrong with a hi-flow catalytic converter?

Q: How do you install a hi-flow catalytic converter?
A: There are two kinds of catalytic converters. The first are direct fit converters (no welding required) which have all necessary flanges and oxygen sensors just like the original equipment catalytic converters. There are also universal fit catalytic converters that are designed to be welded or clamped in place. Universal fit converters have the same flow characteristics as direct fit models with the same inlet and outlet diameter.









Enter the Make, Model and Year of Your Vehicle
It helps us give you the best shopping experience! You can skip.