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BMW E34 Engine Emission Parts

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ECS Catch Can O-ring

ES#3097721 - N1.50X051 - ECS Catch Can O-ring - Replacement ECS catch can O-ring - ECS - Audi BMW Volkswagen MINI

Replacement ECS catch can O-ring 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3097721
Mfg#:
N1.50X051
In Stock
ON SALE! SAVE 25%
$5.99

This product was last offered at the strikethrough price on
06-13-2026

$4.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

3 Pin Connector

ES#4772594 - 12521706096 - 3 Pin Connector - Includes connector housing with terminals and seals. Commonly used for the idle air control valve (IACV). - ECS - BMW

Includes connector housing with terminals and seals. Commonly used for the idle air control valve (IACV). 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4772594
Mfg#:
12521706096
In Stock
ON SALE! SAVE 11%
$10.99

This product was last offered at the strikethrough price on
06-13-2026

$9.78 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E34 Oxygen Sensor - Priced Each

ES#3672454 - 11781742023 - E34 Oxygen Sensor - Priced Each - 2 Required in each application - Bosch - BMW

2 Required in each application 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
For vehicles with production date from 06/1994

Brand:
Bosch - Corporate Logo
ES#:
3672454
Mfg#:
11781742023
In Stock
ON SALE! SAVE 16%
$119.13

This product was last offered at the strikethrough price on
04-10-2026

$100.52 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

PCV Valve Gasket

ES#25577 - 11611729728 - PCV Valve Gasket - Seals PCV valve to intake manifold - Genuine BMW - BMW

Seals PCV valve to intake manifold

Brand:
Genuine BMW - Corporate Logo
ES#:
25577
Mfg#:
11611729728
In Stock
$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Pump Mount - Priced Each

ES#26839 - 11727559515 - Secondary Air Pump Mount - Priced Each - 3 required per car - Genuine BMW - BMW

3 required per car

Brand:
Genuine BMW - Corporate Logo
ES#:
26839
Mfg#:
11727559515
In Stock
7% off MSRP

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

$28.99

This product was last offered at the strikethrough price on
07-20-2026

$26.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Intake Manifold Cover (PCV)

ES#25701 - 11617501562 - Intake Manifold Cover (PCV) - Does not include gasket - Genuine BMW - BMW

Does not include gasket

Brand:
Genuine BMW - Corporate Logo
ES#:
25701
Mfg#:
11617501562
Ships in 5 Business Days
3% off MSRP

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

$87.99

This product was last offered at the strikethrough price on
07-20-2026

$84.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Crankcase Ventilation Hose

ES#2534561 - 11151708801 - Crankcase Ventilation Hose - Prone to cracking and breaking. - URO - BMW

Prone to cracking and breaking. 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2534561
Mfg#:
11151708801
Ships in 2 Business Days
$8.03 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sound Absorber

ES#25647 - 11611742324 - Sound Absorber - Sound absorber that installs on the pcv cover - Genuine BMW - BMW

Sound absorber that installs on the pcv cover

Brand:
Genuine BMW - Corporate Logo
ES#:
25647
Mfg#:
11611742324
Special Order: No Guaranteed ETA
2% off MSRP

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

$169.99

This product was last offered at the strikethrough price on
07-20-2026

$166.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Lambda Sensor

ES#2895525 - 11781247475 - Lambda Sensor - Vemo - BMW

Brand:
Vemo - Corporate Logo
ES#:
2895525
Mfg#:
11781247475
Ships on Nov 11, 2026
$72.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Front Position

ES#2817076 - 11781720537 - Oxygen Sensor - Front Position - Reads out emissions levels to the cars computer - Bosch - BMW

Reads out emissions levels to the cars computer 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
2817076
Mfg#:
11781720537
In Stock at Vendor
$142.99

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

$138.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Vacuum Check Valve

ES#2574659 - 1168000378 - Vacuum Check Valve - Common source of emission related issues - Kayser - BMW Mercedes Benz

Common source of emission related issues

Brand:
Kayser - Corporate Logo
ES#:
2574659
Mfg#:
1168000378
In Stock at Vendor
$16.99

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

$14.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Pump Mount - Priced Each

ES#3559949 - 11727559515 - Secondary Air Pump Mount - Priced Each - 3 required per car - Hamburg Tech - BMW

3 required per car We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
3559949
Mfg#:
11727559515
In Stock
$4.29 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor

ES#514309 - 11781468620 - Oxygen Sensor - Keep your engine running smooth and properly - Bosch - BMW

Keep your engine running smooth and properly 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
514309
Mfg#:
11781468620
In Stock at Vendor
$138.52

This product was last offered at the strikethrough price on
02-14-2026

$126.56 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crank Case Vent Valve Installation Kit

ES#2677888 - 11611729728KTI - Crank Case Vent Valve Installation Kit - Includes screws and PCV valve gasket for proper install - Assembled By ECS - BMW

Includes screws and PCV valve gasket for proper install 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2677888
Mfg#:
11611729728KTI
In Stock
$31.99

This product was last offered at the strikethrough price on
03-04-2026

$24.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E34 Oxygen Sensor

ES#3031913 - 11781730007 - E34 Oxygen Sensor - 660mm length - Bosch - BMW

660mm length 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
3031913
Mfg#:
11781730007
Special Order: No Guaranteed ETA
$117.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Emission Parts

Repairing failed emission components doesn't just turn off the check engine light so you can pass your local emissions test, it also improves performance and fuel economy. ECS stocks all common emission controls, from oxygen sensors to PCV valves.

Let us help you find the parts that fit your BMW

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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