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Mercedes S-Class Catalytic Converters
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Fits: 1993 Mercedes-Benz 500SEL Base;5, 8V, 1992 Mercedes-Benz 500SEL Base;5, 8V, 1995 Mercedes-Benz S420; 4.2, 8V, 1994 Mercedes-Benz S420; 4.2, 8V

PART# 93378

Ca Legality: 49-State Legal (Ex. CA)
Price: $645.55
Qty: Each

Free Shipping! *Continental U.S. only.

Fits: 1998 Pontiac Grand Am; 3.1, 6V, 2000 Mercedes-Benz C280; 2.8, 6V, 2004 Pontiac Grand Am; 3.4, 6V, 1997 Pontiac Grand Am; 3.1, 6V, 2002 Pontiac Montana ...

PART# 99305HM

Qty: Each

Fits: 2003 Mercedes-Benz S500, 2003 Mercedes-Benz SL500, 2002 Mercedes-Benz S500, 2001 Mercedes-Benz S500, 2006 Mercedes-Benz S350

PART# 454205

Qty: Each

Fits: 92-93 Mercedes 400e 8CYL 4.2L , 92-93 Mercedes 400sel 8CYL 4.2L

PART# 23573

Ca Legality: 49-State Legal (Ex. CA)
Price: $599.39
Qty: Each

Free Shipping! *Continental U.S. only.

Fits: 2003 Mercedes-Benz SL500, 2001 Mercedes-Benz E430, 2003 Mercedes-Benz CL500, 2004 Saturn L300 2, 2002 Mercedes-Benz S430, 2005 Saturn L300, 2001 Merce ...

PART# 451205

Qty: Each

Fits: 2006 Mercedes-Benz S430 4Matic;4.3, 8V, 2002 Mercedes-Benz S430; 4.3, 8V, 2003 Mercedes-Benz S430; 4.3, 8V, 2001 Mercedes-Benz S430; 4.3, 8V, 2000 Mer ...

PART# 51937

Qty: Each

Fits: 1978 Porsche 928, 1978 Pontiac LeMans, 1980 Porsche 928, 1979 Pontiac Phoenix, 1977 Pontiac Phoenix, 1980 Oldsmobile 98, 1992 Oldsmobile Custom Cruise ...

PART# 36005

Qty: Each

Fits: 1993 Mercedes-Benz 190E, 1994 Mercedes-Benz S320, 1991 Mercedes-Benz 190E, 1994 Mercedes-Benz E320, 1988 Mercedes-Benz 190E, 1987 Mercedes-Benz 190E, ...

PART# 336008

Qty: Each

Fits: 84-85 Mercedes 500sec 8CYL 5.0L, 84-85 Mercedes 500sel 8CYL 5.0L

PART# 23834

Ca Legality: 49-State Legal (Ex. CA)
Price: $533.10
Qty: Each

Free Shipping! *Continental U.S. only.

Fits: 2004 Mercedes-Benz E320, 2001 Mercedes-Benz E430, 2002 Mercedes-Benz E320, 2003 Mercedes-Benz E320, 2002 Mercedes-Benz S430, 2003 Mercedes-Benz S430

PART# 454305

Qty: Each

Fits: 2004 Mercedes-Benz CLK55 AMG, 2000 Mercedes-Benz E55 AMG, 2000 Nissan Altima, 2003 Mitsubishi Diamante, 2004 Mercedes-Benz CL55 AMG, 2001 Mercedes-Ben ...

PART# 441306

Qty: Each

Fits: 2000 Mercedes-Benz S430; 4.3, 8V, 2000 Oldsmobile Alero; 3.4, 6V, 2004 Pontiac Grand Am; 3.4, 6V, 2000 Pontiac Grand Prix; 3.1, 6V, 2002 Pontiac Monta ...

PART# 51305

Qty: Each


At Andy's Auto Sport, we have a huge variety of Mercedes S-Class 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 Mercedes S-Class catalytic converters, so that whether you are looking for replacement Mercedes S-Class 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 Mercedes S-Class catalytic converter needs!


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.
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.
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.

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