Current BMW:

(E36/7) Z3 1997-2002 Clear BMW chassis

BMW Z3 Exhaust

Supersprint Exhaust Systems

M Z3 Roadster/Coupe Supersprint Muffler System (more info)

dual rear mufflers; mounts to original catalytic converter; 100% stainless-steel; 4 round 80mm polished tips. This exhaust sounds great without being excessively loud. Your BMW should sound like a BMW - not a Harley! These mufflers bolt to the original exhaust with the factory hardware. 100% stainless steel for long life and a slightly larger tip design for better aesthetics.

Applications:
1998-2002 M Z3 M Roadster, M Coupe, includes S52 MZ3 and S54 MZ3

Part #: 786016-786036

Price: $2,079.90 (USD)

Z3 1.9/2.5/2.8 1996-up Supersprint Muffler (more info)

rear muffler section; mounts to original catalytic converter with Supersprint connector (included); 100% stainless-steel; dual round 76mm polished tips; when ordering please provide us with your car's production date

Applications:
1996-1998 Z3 1.9 roadster
1997-2000 Z3 2.3, Z3 2.5, Z3 2.8 coupe and roadster (M52TU engine)

Part #: 786606

Price: $1,042.95 (USD)

Z3 2.5/3.0 Supersprint Muffler System (more info)

rear muffler section; 100% stainless-steel; dual round 76mm polished tips

Applications:
2001-2002 Z3 2.5, Z3 3.0 coupe and roadster (M54)

Part #: 787806-787813

Price: $1,354.90 (USD)

Headers

E46 M3 Headers (more info)

These high quality headers are a direct bolt on for the US BMW E46 M3 and deliver an impressive boost in power over the stock manifolds by removing the restrictive catalytic converters. In our testing for our own E46 M3 Grand Am race cars, we've found the US S54 engine simply needs a good set of headers to make better power. For years, we've been using the factory BMW Euro headers to give the US E46 M3 a big boost in power. Recently the factory headers have jumped up in price from BMW, opening the door for a lower cost alternative -- and these are them! These aftermarket coated headers accomplish the same goal and save you big money over the Euro M3 headers. Pulse-tuned length ensures maximum exhaust flow, while a dual-stage thermobaric ceramic coating lowers radiated heat temperatures by up to 65% as well as increasing the exhaust scavenging effect and reducing corrosion. Headers come ready to be installed, and include new manifold gaskets, exhaust crush/seal rings, as well as loctite thread sealant.

If you're adding these headers to your M3 or MZ3 (with S54 engine) than we highly reccomend also purchasing the Shark Injector Race software - tuned for headers and no cats. An extra power boost, quicker throttle response, no top speed governor, and no Check Engine Light!

Since this upgrade removes all of the catalytic converters, it is intended for off-road use only. A waiver is required before items can ship, download here.

These coated headers fit the following BMWs:
2001-2006 E46 M3 coupe & convertible(Left Hand Drive Models Only)

Part #: EVO.EXH.E46.H01

Price: $1,799.00 (USD)

Factory Euro Header Upgrade for E46 M3 2001-2006 (more info)

BMW factory headers from the Euro market E46 M3 replace your stock manifolds and eliminate your catalytic converters for a big power boost. The Euro M3 had an extra 11hp and 17ft-lbs of torque over the US M3 and most of that is in the headers. We've tested a lot of headers for the E46 M3 for our Grand-Am racecars and the Euro headers consistently come out on top. These are a direct bolt-on to your engine and will fit with almost any center section. They are a perfect fit with none of the haggling and quality problems of imitation headers. (Left Hand Drive Models Only) Buy this package and the gaskets and hardware are free!

Also included with this upgrade is the Shark Injector Race software - tuned for headers and no cats. An extra power boost, quicker throttle response, no top speed governor, and no Check Engine Light!

Since this upgrade removes all of the catalytic converters, it is intended for off-road use only. A waiver is required before items can ship, download here.

Part #: E46M3-EURO-HEADERS

Price: $2,467.00 (USD)

Supersprint Race Header/No-Cat Exhaust System for MZ3 (S52) (more info)

Supersprint offers a header/no-cat upgrade for track cars that is heads and tails above the competition. Using the larger sport headers for the Euro-market M3, and a straight-through Euro center resonator, big horsepower gains can be had from the S52 engine in the 1998-2000 M Coupe, M Roadster. This system will delete your cats so it's intended for track cars only and special software will be needed to keep the check engine light off. This exhaust system is a perfect compliment to our Intake/Cam Packages (link) and we have special software for running headers and no cats with the intake/cam packages. All gaskets and hardware are included. Note: this is a special-order item but worth the wait! (Left Hand Drive Models Only)

This part alters or deletes the emissions equipment on your car. Because of this, we require a waiver of emissions compliance to be signed and sent in to TMS. You can download the waiver here.

Part #: 784301-786002

Price: $2,873.60 (USD)

Catalytic Converters

Catalytic Converter - Z3 1.9 1996-1998 (more info)

49 State Legal

This catalytic converter is a direct fit replacement to OEM, but at a third of the cost. No welding required because these bolt on to your stock exhaust manifold and muffler. Backed by a manufacturers warranty - 2 years on the catalyst and 5 years on the external pipes. Legal in all states except California. We also offer a version that is legal all 50 states including California.

This item fits the following BMWs:
1996-1998 Z3 BMW Z3 1.9

Part #: DEC71442

Price: $359.95 (USD)

Catalytic Converter - Z3 1.9 1996-1998 - 50 State Legal (more info)

50 State Legal

This catalytic converter is a direct fit replacement to OEM, but at a third of the cost. No welding required because these bolt on to your stock exhaust manifold and muffler. Backed by a manufacturers warranty - 2 years on the catalyst and 5 years on the external pipes. Legal in all 50 states including California.

This item fits the following BMWs:
1996-1998 Z3 BMW Z3 1.9

Part #: DEC91442

Price: $618.95 (USD)

Catalytic Converter - Z3 2.8 1997-1998 (more info)

Part #: DEC71463

Price: $419.95 (USD)

Catalytic Converter - Z3 2.8 1997-1998 - 50 State Legal (more info)

Part #: DEC91463

Price: $618.95 (USD)

Front Catalytic Converter - E46 325i (M54), 330i, Z3 3.0i (more info)

49 State Legal

Direct fit replacement to OEM but at a third of the cost. No welding required because these bolt on to your stock exhaust manifold and muffler.Backed by a manufacturers warranty - 2 years on the catalyst and 5 years on the external pipes. Legal in all states except California. This Front Catalytic Converter is for Bank 1 - Cylinders 1-3.

This item fits the following BMWs:
2001-2005 E46 BMW 325i 325ci 325xi - M54 Engine Only
2001-2005 E46 BMW 330i 330ci 330xi
2000-2002 Z3 BMW Z3 3.0i

Part #: DEC1404F

Price: $399.95 (USD)

Rear Catalytic Converter - E46 325i (M54), 330i, Z3 3.0i (more info)

49 State Legal

Direct fit replacement to OEM but at a third of the cost. No welding required because these bolt on to your stock exhaust manifold and muffler.Backed by a manufacturers warranty - 2 years on the catalyst and 5 years on the external pipes. Legal in all states except California. This Rear Catalytic Converter is for Bank 2 - Cylinders 4-6.

This item fits the following BMWs:
2001-2005 E46 BMW 325i 325ci 325xi - M54 Engine Only
2001-2005 E46 BMW 330i 330ci 330xi
2000-2002 Z3 BMW Z3 3.0i

Part #: DEC1404R

Price: $399.95 (USD)

Oxygen Sensors (O2 Sensors)

Bosch Oxygen Sensor - mounts after catalytic converter - E46 E39 X3 X5 Z3 Z4 (more info)

This is the post-cat oxygen sensor for cylinders 4-6 for BMW E46 E39 X3 X5 Z3 Z4. Bosch # 15 109.

This item fits the following BMWs:
1999-3/2003 E46 BMW 323i 323ci 325xi 328i 328ci 330i 330ci 330xi
2001-3/2003 E46 BMW 325i 325ci only for cars with M54 engine
1999-2003 E39 BMW 528i 525i 530i
2004-2006 E83 BMW X3 2.5 - Bank 1 Only
2004-2006 E83 BMW X3 3.0i - Bank 1 - Automatic Transmission Only
2000-2006 E53 BMW X5 3.0i
1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
2003-2006 E85 BMW Z4 2.5i Z4 3.0i

Part #: 11781433940 (11-78-1-433-940)

Price: $74.95 (USD)

Bosch Oxygen Sensor - mounts before catalytic converter - E46 E39 E38 X3 X5 Z3 Z4 (more info)

This direct fit Bosch oxygen sensor plugs directly into your factory connector. It is the pre-cat sensor. No cutting or splicing required. A new oxygen sensor can improve driveability and lengthen engine life. It fits BMW E46 E39 E38 X3 X5 Z3 Z4. Bosch # 13 477.

This item fits the following BMWs:
1999-3/2003 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330xi 330ci
1999-2003 E39 BMW 525i 528i 530i M5
1997-2003 E39 BMW 540i
1995-2001 E38 BMW 750il
2004-2006 E83 BMW X3 2.5i X3 3.0i
2000-2006 E53 BMW X5 3.0i
2000-2003 E53 BMW X5 4.4i 4.6is
1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
2003-2005 E85 BMW Z4 2.5i Z4 3.0i
2000-2003 E52 BMW Z8

Part #: 11781742050 (11-78-1-742-050)

Price: $77.95 (USD)

E36 OBD-II 328, M3, MZ3 Bosch Oxygen Sensors (4 required) (more info)

A new oxygen sensor set can improve driveability and lengthen engine life. Ultimately, you achieve a smoother running engine that is more fuel efficient. Feedback from the oxygen sensors provides closed-loop control of the injected quantity of fuel for optimum air-fuel mixture, enabling virtually complete combustion to take place. Contaminants in gas and certain atmospheric conditions can drastically shorten the life of any oxygen sensor, therefore they should be checked with every periodic maintenance and changed if necessary. Sold separately, but four sensors are required. Fits E36 front and rear, M Roadster / Coupe front to 2000. Bosch Part # 13 884.

This item fits the following BMWs:
1996-1999 E36 BMW 323is 323ic 328i 328is 328ic M3
1997-1998 E39 BMW 528i
1998-2002 Z3 BMW Z3 M Roadster M coupe

Part #: 11781427884 (11-78-1-427-884)

Price: $139.95 (USD)

E46 M3 Z3M Z4M Oxygen Sensor - Cylinders 1-3 - Mounts After Catalytic Converter (more info)

This oxygen sensor fits the following BMWs:
2001-2006 E46 3 Series M3 M3 Convertible
2001-2002 Z3 M Z3 M Roadster Z3 M Coupe with S54 engine
2006-2008 E85 E86 Z4 M Z4 M Roadster Z4 M Coupe

Part #: 11781406621 (11-78-1-406-621)

Price: $149.95 (USD)

E46 M3 Z3M Z4M Oxygen Sensor - Cylinders 4-6 - Mounts after Catalytic Converter (more info)

Part #: 11781406622 (11-78-1-406-622)

Price: $149.95 (USD)

M Roadster, Coupe OBD-II Rear Bosch Oxygen Sensor (more info)

M Roadster, Coupe OBD-II Rear Bosch Oxygen Sensor. (2 required.)

Part #: 11781406981 (11-78-1-406-981)

Price: $139.95 (USD)

O2 Sensor Bung and Plug (more info)

O2 Sensor Bung and plug. This weld-in bung allows an O2 sensor to be screwed into your exhaust system. It's required for custom exhaust systems, and is also useful for air/fuel ratio measurements when dyno testing. A threaded plug is included to cap off when not in use. Bung and cap/plug are both 100% stainless steel. The bung and plug are also available separately (in case you don't need both). Simply choose your option below.

TMS Oxygen Sensor Bung Specs:

Material 304 stainless steel
1.00" / 25.4mm OD
0.50" / 12.7mm Tall
Thread size and pitch M18x1.5

TMS O2 Sensor Plug & Crush Ring Specs

Material 304 stainless steel
10mm female hex for install and removal
Thread size and pitch M18x1.5
Copper Crush Ring for leak free installation

Install Tips

Locate bung as close to engine a possible, without exceeding the maximum operating temperature for the O2 sensor. The suggested location is just down-stream of the merge-collector on each bank of cylinders.
Sensors located after upstream exhaust system leaks or too close to exhaust outlets are susceptible to poor readings or influence of ambient air
O2 Sensors exposed to exhaust gasses with too high amount of un-burnt fuel can lead to misleading readings. A possible lean reading.
Locate sensor/bung 90° to exhaust gas stream.
Locate sensor/bung in tube with a minimum of 10° up angel to prevent liquid build up in sensor element.
Use stainless steel welding wire or rod when installing bung.
Do not have bung plug or a oxygen sensor installed when welding bung in place.
Welding can distort the bung so it is recommended you chase/tap the threads of the bung after welding.
When installing O2 sensor or plug, use an O2 sensor compatible high temperature resistant grease on the threads.
Use tightening torque suggested by O2 senor manufacturer.

Part #: TEN9949O2S

Price: $18.50 (USD)

Exhaust Hangers and Gaskets

Acousti/Seal Exhaust System Sealing Compound - 5oz Tube (more info)

With years of experience with dealing with exhaust systems of all kinds, we've found this product to be the BEST at fixing or preventing exhaust leaks. Just apply a light coating of Acousti/seal to pipes, flanges or slip-fit clamps before assembly for a leak free installation. 5 ounce tube (142 grams).

Part #: 35959

Price: $19.95 (USD)

Cylinder Head to Exhaust Manifold Stud & Nut Kit - E39 E46 Z3 w M52tu Engine (more info)

This convenient kit includes all the hardware you need to replace your old, rusted (or broken) exhaust manifold studs on your M52tu-family engine's head.

This item fits the following BMWs:
1999-2000 E46 BMW 323i 323ci 328i 328ci
1999-2000 E39 BMW 528i
1999-2000 Z3 BMW Z3 2.3 Z3 2.8

Part #: TEN4649SK2

Price: $52.95 (USD)

Exhaust Gasket - E36 M3, E46 M3, Z3M, Z4M (more info)

This is the exhaust gasket seal ring.

This item fits the following BMWs:
1996-1999 E36 BMW M3
2001-2006 E46 BMW M3
1998-2002 Z3 BMW M Roadster M Coupe
2006-2008 E85 BMW Z4 M Roadster M Coupe

Part #: 18111723379

Price: $7.50 (USD)

Exhaust Manifold Gasket - M50 & S50 Engines (more info)

This exhaust manifold gasket fits 2.5 liter 6 cylinder engines from 1992-1995, 1995 3.0 liter M3, and all 4 cylinder engines from 1990-1999 (M42 & M44).

It fits all 1992-1995 325i & 325is (E36), 1995 M3 3.0, 1991-1995 525i (E34), 318i/is/ti 1990-1995 (E30 & E36) and Z3 1.9 liter.

These are sold individually. 3 are required for 6 cylinder (M50/S50) and 2 are required for 4 cylinder (M42 & M44).

Part #: 11621728983 (11-62-1-728-983)

Price: $8.40 (USD)

Exhaust Manifold Gasket - M52 & S52 Engines (more info)

This exhaust manifold gasket fits 2.8 and 3.2 liter engines, as came on all 1996-1999 M3, 328i/is & 323is (E36), 1997-2000 528i (E39), and Z3 2.8 liter. These are sold individually, and 2 are required for each car.

Part #: 11621744252 (11-62-1-744-252)

Price: $11.10 (USD)

Exhaust Rubber Hanger - E21 E30 E24 E28 Z3 (more info)

This is the circular rubber exhaust hanger to suspend the exhaust from the chassis.

This item fits the following BMWs:
1977-1983 E21 BMW 320i
1984-1991 E30 BMW 318i 318is 318ic 325e 325es 325i 325ic 325is 325ix M3
1994-1998 E36 BMW 318ti
1976-1981 E12 BMW 528i 530i
1982-1988 E28 BMW 524td 528e 533i 535i 535is M5
1982-1989 E24 BMW 633csi 635csi M6
1997-2002 Z3 BMW Z3 1.9 Z3 2.3 Z3 2.8 M Roadster M Coupe

Part #: 18211105635 (18-21-1-105-635)

Price: $3.95 (USD)

M50/M52 Exhaust Manifold to Cat Gasket (more info)

M50/M52 Exhaust Manifold to Catalytic Converter Gasket. 2 needed per car. Fits all cars with M50 and M52 engines.

Part #: 18301716888 (18-30-1-716-888)

Price: $10.40 (USD)

M50/M52/S50/S52 6 Cylinder Head to Exhaust Manifold Stud & Nut Kit (more info)

This convenient kit includes all the hardware you need to replace your old, rusted (or broken?) exhaust manifold studs on your M50-family engine's head (including M50, M52, S50, S52). The perfect time to preventatively replace your exhaust studs is anytime you remove the manifolds (perhaps to install headers) or are removing the head or complete engine. Kit includes the correct number of OEM studs, copper locking nuts, and also includes two jam-nuts to be used for removing your old studs and installing the new studs. This stud and nut kit Fits 325i, 325is, 328i, 328is, 323is, E36 M3 (3.0 & 3.2 liter), E34 525i (91+), E39 528i, Z3 2.8.

This item fits the following BMWs:
1992-1998 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1991-1995 E34 BMW 525i
1997-1998 E39 BMW 528i
1997-1998 Z3 BMW Z3 2.8 M Roadster M Roadster

Part #: TEN3649SK1

Price: $79.95 (USD)