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BMW Z3 M Roadster S54 3.2L

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BMW Z3 M Roadster S54 3.2L Exhaust Emission Parts

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7/8"(22mm) Flexible Oxygen Sensor Wrench

ES#240942 - FO-78 - 7/8"(22mm) Flexible Oxygen Sensor Wrench - The proper tool to remove difficult-to-reach oxygen sensors - Schwaben - Audi BMW Volkswagen Mercedes Benz MINI Porsche
ECS Tuning recommends this product.

The proper tool to remove difficult-to-reach oxygen sensors 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Schwaben - Corporate Logo
ES#:
240942
Mfg#:
FO-78
In Stock
ON SALE! SAVE 25%
$48.99

This product was last offered at the strikethrough price on
05-02-2026

$36.74 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Universal Catalytic Converter - 2.25"

ES#4005308 - 602205 - Universal Catalytic Converter - 2.25" - 2.25" inlet/outlet, 14" length of converter itself, 6" width & 4" height - Emico - Audi BMW Volkswagen Mercedes Benz MINI Porsche

2.25" inlet/outlet, 14" length of converter itself, 6" width & 4" height

Brand:
Emico - Corporate Logo
ES#:
4005308
Mfg#:
602205
In Stock
$97.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Manifold Oxygen Sensor - Front Position/Pre-Cat

ES#3031886 - 11781743994 - Front Manifold Oxygen Sensor - Front Position/Pre-Cat - Located in the front position of the exhaust manifold for cylinders 1-3 on the S54 engine - Bosch - BMW

Located in the front position of the exhaust manifold for cylinders 1-3 on the S54 engine 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
3031886
Mfg#:
11781743994
In Stock at Vendor
$199.99

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

$193.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Manifold Oxygen Sensor - Front Position/Pre-Cat

ES#11024 - 13952 - Rear Manifold Oxygen Sensor - Front Position/Pre-Cat - Also BMW # 11781405324. Located in the front position of the exhaust manifold for cylinders 4-6 on the S54 engine - Bosch - BMW

Also BMW # 11781405324. Located in the front position of the exhaust manifold for cylinders 4-6 on the S54 engine 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
11024
Mfg#:
13952
In Stock
$117.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Manifold Oxygen Sensor - Rear Position/Post-Cat

ES#11026 - 13951 - Rear Manifold Oxygen Sensor - Rear Position/Post-Cat - Also BMW # 11781406622. Located in the rear position of the exhaust manifold for cylinders 4-6 on the S54 engine - Bosch - BMW

Also BMW # 11781406622. Located in the rear position of the exhaust manifold for cylinders 4-6 on the S54 engine 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
11026
Mfg#:
13951
In Stock at Vendor
$208.90

This product was last offered at the strikethrough price on
05-19-2026

$186.98 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Manifold Oxygen Sensor - Rear Position/Post-Cat

ES#11025 - 15138 - Front Manifold Oxygen Sensor - Rear Position/Post-Cat - Also BMW # 11781406621. Located in the rear position of the exhaust manifold for cylinders 1-3 on the S54 engine - Bosch - BMW

Also BMW # 11781406621. Located in the rear position of the exhaust manifold for cylinders 1-3 on the S54 engine 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
11025
Mfg#:
15138
In Stock
$145.27 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#5376161 - 11781427884 - Oxygen Sensor - Priced Each - 990mm - cure your poor gas mileage by replacing your worn oxygen sensors - Pierburg - BMW

990mm - cure your poor gas mileage by replacing your worn oxygen sensors

Brand:
Pierburg - Corporate Logo
ES#:
5376161
Mfg#:
11781427884
In Stock
$279.99

This product was last offered at the strikethrough price on
04-01-2026

$210.20 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Direct-Fit Catalytic Converter - Front

ES#2618046 - 50415 - Direct-Fit Catalytic Converter - Front - Keep your emissions in check - Magnaflow - BMW

Keep your emissions in check 48-state legal - not for sale or use in California

Brand:
Magnaflow - Corporate Logo
ES#:
2618046
Mfg#:
50415
Back Ordered
$1156.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Direct-Fit Catalytic Converter - Rear

ES#2975138 - 50416 - Direct-Fit Catalytic Converter - Rear - Keep your emissions in check - Magnaflow - BMW

Keep your emissions in check 48-state legal - not for sale or use in California

Brand:
Magnaflow - Corporate Logo
ES#:
2975138
Mfg#:
50416
Back Ordered
$1042.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

EGT Sensor

ES#27307 - 11787831624 - EGT Sensor - Exhaust gas temperature sensor for the S54 engine - Genuine BMW - BMW

Exhaust gas temperature sensor for the S54 engine

Brand:
Genuine BMW - Corporate Logo
ES#:
27307
Mfg#:
11787831624
In Stock
6% off MSRP

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

$162.99

This product was last offered at the strikethrough price on
07-17-2026

$153.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Innovate LC-2 Wideband O2 Controller Kit

ES#4809696 - 38770 - Innovate LC-2 Wideband O2 Controller Kit - Includes Lambda cable & 8-foot sensor cable. - Innovate Motorsports - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Includes Lambda cable & 8-foot sensor cable.

Brand:
Innovate Motorsports - Corporate Logo
ES#:
4809696
Mfg#:
38770
In Stock at Vendor
$212.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#27157 - 11781437943 - Oxygen Sensor - Priced Each - Cure your poor gas mileage, rough idle, power loss and check engine light by replacing your worn oxygen sensors - Genuine BMW - BMW

Cure your poor gas mileage, rough idle, power loss and check engine light by replacing your worn oxygen sensors

Brand:
Genuine BMW - Corporate Logo
ES#:
27157
Mfg#:
11781437943
Ships in 1-2 days
6% off MSRP

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

$445.99

This product was last offered at the strikethrough price on
07-17-2026

$418.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Manifold Oxygen Sensor - Rear Position/Post-Cat

ES#27145 - 11781406622 - Rear Manifold Oxygen Sensor - Rear Position/Post-Cat - Located in the rear position of the exhaust manifold for cylinders 4-6 on the S54 engine - Genuine BMW - BMW

Located in the rear position of the exhaust manifold for cylinders 4-6 on the S54 engine

Brand:
Genuine BMW - Corporate Logo
ES#:
27145
Mfg#:
11781406622
Ships in 1-2 days
6% off MSRP

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

$423.99

This product was last offered at the strikethrough price on
07-17-2026

$398.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Manifold Oxygen Sensor - Rear Position/Post-Cat

ES#27144 - 11781406621 - Front Manifold Oxygen Sensor - Rear Position/Post-Cat - Located in the rear position of the exhaust manifold for cylinders 1-3 on the S54 engine - Genuine BMW - BMW

Located in the rear position of the exhaust manifold for cylinders 1-3 on the S54 engine

Brand:
Genuine BMW - Corporate Logo
ES#:
27144
Mfg#:
11781406621
Ships in 1-2 days
6% off MSRP

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

$423.99

This product was last offered at the strikethrough price on
07-17-2026

$398.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Valve

ES#26872 - 11727837456 - Secondary Air Valve - Also known as an EGR valve - Genuine BMW - BMW

Also known as an EGR valve

Brand:
Genuine BMW - Corporate Logo
ES#:
26872
Mfg#:
11727837456
Ships in 1-2 days
2% off MSRP

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

$194.99

This product was last offered at the strikethrough price on
07-17-2026

$190.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Manifold Oxygen Sensor - Front Position/Pre-Cat

ES#27143 - 11781405324 - Rear Manifold Oxygen Sensor - Front Position/Pre-Cat - Located in the front position of the exhaust manifold for cylinders 4-6 on the S54 engine - Genuine BMW - BMW

Located in the front position of the exhaust manifold for cylinders 4-6 on the S54 engine

Brand:
Genuine BMW - Corporate Logo
ES#:
27143
Mfg#:
11781405324
In Stock
ON SALE!
$395.99

This product was last offered at the strikethrough price on
06-15-2026

$378.53 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

More About Exhaust Emission Parts

Oxygen sensors, catalytic converters, and other critical emissions components not only cause Check Engine Lights when they fail, but they'll also keep you from registering your car. Make sure your emissions system is functioning properly so you can continue to drive your car legally.

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Manufacturer names and/or part numbers are used only for identification purposes.

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