BMW Exhaust Parts, Mufflers & Catalytic Converters for BMW 3 Series E30 (1984-1991)

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Performance exhaust options from the best BMW aftermarket producers and the most reliable replacement maintenance parts are all at Turner Motorsport. Over time, factory exhaust on the cleanest examples of BMW heritage shows their age. Our factory replacement exhausts are just what you need to keep your favorite car in showroom condition or finish off your restoration. If you are looking for a bump in sound and power, you can also find our performance options like Headers, Downpipes, and Mufflers from Corsa, DINAN, and others on this page.

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OEM Bosch Oxygen Sensor - E30 E36 E34 E32 E31
For vehicles with production date from 09/1987
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:3455
Part#: 11781735499
In Stock
$ 82.99 USD
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$ 82.99 USD
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A new oxygen sensor can improve driveability and lengthen engine life. Ultimately, you achieve a smoother running engine that is more fuel efficient. Feedback from the oxygen sensor 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. Bosch Part # 13 231. Replacement for BMW part # 11781735499 and 11781738282.

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!


This item fits the following BMWs:
1988-1991 E30 BMW 325i 325is 325ix 325ic
1992-1995 E36 BMW 318i 318is 318ic 318ti
1992-1995 E36 BMW 325i 325is 325ic M3
1993-1995 E34 BMW 530i
1993-3/1994 E34 BMW 540i
1993-1994 E32 BMW 740i 740il
1988-1994 E32 BMW 750il
1990-1994 E31 BMW 850i 850ci

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OEM Bosch Oxygen Sensor - E23 E24 E28 E30
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:2991
Part#: 11781716156
Ships in 2 Business Days
$ 153.18

This product was last offered at the strikethrough price on
04-09-2026

$ 144.49 USD
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$ 144.49 USD
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This direct fit Bosch oxygen sensor plugs directly into your factory connector. No cutting or splicing required. A new oxygen sensor can improve driveability and lengthen engine life. Ultimately, you achieve a smoother running engine that is more fuel efficient. Feedback from the oxygen sensor 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 It fits BMW E23 E24 E28 E30. Bosch # 13 049.

This item fits the following BMWs:
1984-1988 E30 BMW 325e 325es
1985-1988 E28 BMW 535i 535is
1985-1987 E24 BMW 635csi
1985-1986 E23 BMW 735i
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Bosch Oxygen Sensor - E30
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:201885
Part#: 11781286638
In Stock
$ 156.99 USD
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$ 156.99 USD
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Bosch BMW Oxygen Sensor - 11781286638

Dinan - Corporate Logo
T#:38688901
Part#: D662-9228
In Stock
8% off MSRP $ 23.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 21.99 USD
Free Shipping
8% off MSRP
$ 23.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 21.99 USD
Free Shipping
Perfect for the do-it-yourself customer looking for a band clamp that allows for a 360º pressure connection, this clamp fits the build. Created from stainless steel, the clamp allows for connecting to 70mm (2.75") via a swedged pipe, and provides even clamping pressure and seal around the entire pipe. This makes for a simple install, or a quick removal should the need arise.
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OEM Bosch Oxygen Sensor - E30 325i/is 1987, E30 325e/es 1988 ...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:2997
Part#: 11781716114
In Stock at Vendor
$ 173.99

This product was last offered at the strikethrough price on
05-07-2026

$ 168.99 USD
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$ 168.99 USD
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This direct fit Bosch oxygen sensor plugs directly into your factory connector. No cutting or splicing required. A new oxygen sensor can improve driveability and lengthen engine life. It fits BMW E30 325e 325es 325i 325i s325ix. Bosch # 13045. Bad oxygen sensors can cause check engine lights and poor fuel mileage. Replace your faulty sensor with this high quality Bosch sensor to turn off your check engine light and restore fuel mileage.

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!


This item fits the following BMWs:
1988 E30 BMW 325e 325es
1987 E30 BMW 325i 325is 325ic 325ix

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OEM Bosch Oxygen Sensor -- E30 M3
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:3454
Part#: 11781310838
In Stock at Vendor
$ 146.47 USD
Free Shipping
$ 146.47 USD
Free Shipping

A new oxygen sensor can improve driveability and lengthen engine life. Ultimately, you achieve a smoother running engine that is more fuel efficient. Feedback from the oxygen sensor 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.

This is the OEM Bosch oxygen sensor for E30 BMW's with the S14 engine. This sensor is mounted in the manifold before the catalytic converter. OEM replacement for BMW # 11781310838.

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

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Bosch Oxygen Sensor - E30
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:369343
Part#: 11781727451
In Stock at Vendor
$ 167.99

This product was last offered at the strikethrough price on
05-07-2026

$ 162.99 USD
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$ 162.99 USD
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Cure your poor gas mileage by replacing your worn oxygen sensors
Dinan - Corporate Logo
T#:38688902
Part#: D662-9237
Ships on Aug 14, 2026
8% off MSRP $ 23.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 21.99 USD
Free Shipping
8% off MSRP
$ 23.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 21.99 USD
Free Shipping
Perfect for the do-it-yourself customer looking for a band clamp that allows for a 360º pressure connection, this clamp fits the build. Created from stainless steel, the clamp allows for connecting to 76mm (3") via a swedged pipe, and provides even clamping pressure and seal around the entire pipe. This makes for a simple install, or a quick removal should the need arise.
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Packaged by Turner - Corporate Logo
T#:597270
Part#: 18211707923KT1
Ships on Oct 16, 2026
$ 564.99 USD
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$ 564.99 USD
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This is a complete exhaust hanger and bracket kit for the 1987-1992 E30 325i models. It's all of the hangers and gaskets needed for the rear muffler and a life-saving addition to any exhaust project on your car. Any of the hardware and hangers that have been on the car for a few years are prone to rust and seizing in place. So to get them off usually means breaking or cutting one or more pieces. So having this complete E30 hanger kit on hand will allow you to finish the job without scrambling for parts later on. And new hangers are always a good idea anyway.

This 325i hanger kit includes -
front upper muffler body clamp - 18201707925 (18211707923) - x 1
front lower muffler body clamps - 18201178132 (18211178126) - x 2
rear lower muffler body clamp - 18211176029 (18211176713) - x 1
rear muffler rubber hangers - 18211712838 - x 2
center muffler rubber hanger - 18211105635 - x 1
muffler to center section seal ring (45mm) - 18111723541 x 1
muffler to center section seal ring (42mm) - 18111245960 x 1
nuts & bolts for all of the above

There is an early and late version to the muffler band clamps but the only difference we saw was more holes in the band on the early style. The early style is included in this kit which might be better because water won't get trapped between the clamp and the muffler body.

If you're removing the center section from the exhaust manifolds you can add those gaskets as well.

This item fits the following BMWs:
1987-1992 E30 BMW 325i 325ic 325is 325ix
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OEM Bosch Oxygen Sensor L=760mm - E30 318i
For vehicles with production date from 12/1984
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:639198
Part#: 11781715263
Special Order: No Guaranteed ETA
$ 115.99 USD
Free Shipping
$ 115.99 USD
Free Shipping
The oxygen sensor is vital to the performance and drivability of your car. The engine computer relies on data from the sensor to make adjustments in engine efficiency and performance. When your BMW oxygen sensor fails, the computer can no longer sense the air/fuel ratio, so it ends up guessing -- resulting in poor performance, poor gas mileage, and increased pollution. Make sure your BMW engine performs as it should, and doesn't use more fuel than it needs to, by simply changing your oxygen sensor today. There is no lifespan on O2 sensors but there are several fault codes that indicate a failed sensor (O2 monitoring, cat efficiency, O2 heating circuit, O2 readiness, and others). The O2 sensor is heated and has a self-calibration feature so once you get the codes or feel performance has suffered, a new sensor is a good starting point to get you back to peak performance. Bosch's Oxygen sensors are high quality and will give you the longest and best performance for the price. Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products. As a leading source of high-performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts. All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!
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Dinan - Corporate Logo
T#:38688899
Part#: D663-0601-BOX
Ships on Aug 17, 2026
11% off MSRP $ 107.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 95.99 USD
Free Shipping
11% off MSRP
$ 107.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 95.99 USD
Free Shipping
Looking to replace old, or damaged, Dinan clamp-on tips or want to customize your exhaust setup with some Dinan flair? Look no further than our polished or black ceramic coated, straight-cut, double-walled exhaust tips that are available in a variety of tip sizes, lengths and inlet diameters! The enlarged tips with classic styling features an engraved Dinan logo on each tip. A combination that will demand attention to any passerby.
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Dinan - Corporate Logo
T#:38688898
Part#: D663-0600-BOX
In Stock
10% off MSRP $ 95.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 85.99 USD
Free Shipping
10% off MSRP
$ 95.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 85.99 USD
Free Shipping
Looking to replace old, or damaged, Dinan clamp-on tips or want to customize your exhaust setup with some Dinan flair? Look no further than our polished or black ceramic coated, straight-cut, double-walled exhaust tips that are available in a variety of tip sizes, lengths and inlet diameters! The enlarged tips with classic styling features an engraved Dinan logo on each tip. A combination that will demand attention to any passerby.
Show More Show Less