Catalytic Converters

1 - 12 of 282
Sort by:

Fits: 02-04 Buick Rainier 4.2L, 02-04 Chevrolet Trailblazer 4.2L, 02-04 GMC Envoy 4.2L, 02-04 Isuzu Ascender 4.2L, 02-04 Oldsmobile Bravada 4.2L

PART# 2010024

Ca Legality: 48-State Legal (Ex. CA/NY)
Inlet Size: 2.5"
Price: $222.80
Qty: Each

Free Shipping! *Continental U.S. only.

Fits: 1990 Oldsmobile 98;3.8, 6V, 1991 Pontiac Bonneville; 3.8, 6V, 1988 Pontiac Bonneville; 3.8, 6V, 1989 Oldsmobile Delta 88; 3.8, 6V, 1989 Oldsmobile 98; ...

PART# 23422

Ca Legality: 49-State Legal (Ex. CA)
Price: $120.84
Qty: Each

Free Shipping! *Continental U.S. only.

Fits: 2002 Pontiac Montana, 2006 Mitsubishi Outlander, 2001 Pontiac Aztek, 2005 Mercury Mountaineer, 2004 Pontiac Montana, 2005 Pontiac Montana, 2004 Oldsmo ...

PART# 455306

Qty: Each

Fits: 2002 Oldsmobile Aurora, 2001 Oldsmobile Aurora

PART# 448212

Qty: Each

Fits: 1983 Pontiac Firebird; 5, 8V, 1981 Oldsmobile Delta 88; 4.3, 8V, 1990 Pontiac Firebird; 5.7, 8V, 1982 Oldsmobile 98;5, 8V, 1988 Nissan D21; 3, 6V, 198 ...

PART# 94015

Ca Legality: 49-State Legal (Ex. CA)
Inlet Size: 2.25"
Qty: Each

Fits: 1997 Chevy Malibu 3.1L, 1997 Oldsmobile Cutlass 3.1L

PART# 446539

Ca Legality: 50-State Legal
Price: $416.02
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: 1996 Pontiac Grand Prix; 3.4, 6V, 1996 Oldsmobile Cutlass Supreme; 3.4, 6V

PART# 23522

Ca Legality: 49-State Legal (Ex. CA)
Price: $265.99
Qty: Each

Free Shipping! *Continental U.S. only.

Fits: 1980 Oldsmobile Delta 88; 4.3, 8V, 1980 Pontiac Parisienne; 3.8, 6V, 1980 Oldsmobile 98;5, 8V, 1980 Oldsmobile Custom Cruiser; 5, 8V, 1980 Pontiac Bon ...

PART# 23419

Ca Legality: 49-State Legal (Ex. CA)
Inlet Size: 2.25"
Price: $116.47
Qty: Each

Free Shipping! *Continental U.S. only.

Fits: 1978 Pontiac Grand Safari; 6.6, 8V, 1979 Pontiac Catalina; 5.7, 8V, 1978 Pontiac Catalina; 5.7, 8V, 1979 Pontiac Parisienne; 5, 8V, 1979 Pontiac Grand ...

PART# 93431

Ca Legality: 49-State Legal (Ex. CA)
Inlet Size: 2.5"
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: 1998 Oldsmobile Aurora, 1999 Oldsmobile Aurora, 1996 Oldsmobile Aurora, 1997 Oldsmobile Aurora

PART# 448210

Ca Legality: 50-State Legal
Price: $310.32
Qty: Each

Free Shipping! *Continental U.S. only.

Not able to find what you are looking for?

New Catalytic Converter Chevy Olds Chevrolet Cavalier Classic Alero 5YR WARRANTY


New Catalytic Converter Chevy Olds Chevrolet Blazer GMC Jimmy 96-99 5YR WARRANTY

Walker Catalytic Converter Direct Fit Stainless Buick Olds Pontiac 3.8L

New Catalytic Converter Chevy Olds Chevrolet Impala Monte Carlo 5YR WARRANTY

At Andy's Auto Sport, we have a huge variety of Oldsmobile 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 Oldsmobile catalytic converters, so that whether you are looking for replacement Oldsmobile 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 Oldsmobile 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.

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