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BMW Engine Emission Parts

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Environmental Air Catalyst (EAC) Sensor

ES#4781504 - 17117537292R - Environmental Air Catalyst (EAC) Sensor - Found on the back side of the radiator - URO - BMW

Found on the back side of the radiator affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
For SULEV Vehicles Equipped with the N51 Engine Only

Brand:
URO - Corporate Logo
ES#:
4781504
Mfg#:
17117537292R
In Stock
$271.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Universal Catch Can Kit - Carbon Fiber

ES#2500608 - MM0CCCF - Universal Catch Can Kit - Carbon Fiber - Kit with catch can and rubber hose; for retrofitting on a variety of vehicles. - Mishimoto - Audi BMW Volkswagen MINI

Kit with catch can and rubber hose; for retrofitting on a variety of vehicles. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mishimoto - Corporate Logo
ES#:
2500608
Mfg#:
MM0CCCF
In Stock
$162.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Charcoal Filter

ES#37275 - 16137163596 - Charcoal Filter - Aids in emissions reduction - Genuine BMW - BMW

Aids in emissions reduction affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
37275
Mfg#:
16137163596
In Stock
10% off MSRP

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

$433.99

This product was last offered at the strikethrough price on
06-03-2026

$391.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

"Cold Climate" Crankcase Pressure Regulator Valve Kit

ES#4390746 - 11617533400S1 - "Cold Climate" Crankcase Pressure Regulator Valve Kit - Replace your cracked breather hoses and crankcase pressure valve with all new components! - Bremmen Parts - BMW

Replace your cracked breather hoses and crankcase pressure valve with all new components! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Superior performance for both warm and cold climates

Brand:
Bremmen Parts - Corporate Logo
ES#:
4390746
Mfg#:
11617533400S1
Ships on Jul 6, 2026
Auto Notify
ON SALE! SAVE 14%
$110.99

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

$94.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

AdBlue DEF Fluid - 10 Liters

ES#4773177 - 000989980911 - AdBlue DEF Fluid - 10 Liters - Diesel exhaust fluid - Genuine Mercedes Benz - Audi BMW Volkswagen Mercedes Benz

Diesel exhaust fluid affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Mercedes Benz - Corporate Logo
ES#:
4773177
Mfg#:
000989980911
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.

$59.00

This product was last offered at the strikethrough price on
01-06-2026

$54.99 USD
Free Shipping
on orders $49 and up

Blow-By Vent Hose

ES#4069279 - 11157553949 - Blow-By Vent Hose - For PCV system - Rein - BMW

For PCV system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4069279
Mfg#:
11157553949
In Stock
$40.36 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Fuel Vapor Detection Pump

ES#4877363 - 16137448092 - Fuel Vapor Detection Pump - Provides accurate pressure necessary to identify emissions system leakage - URO - BMW

Provides accurate pressure necessary to identify emissions system leakage affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4877363
Mfg#:
16137448092
In Stock
$78.19 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crank case vent hose

ES#1906469 - 11127584128 - Crank case vent hose - Connects to the CCV on the valve cover - Genuine BMW - BMW

Connects to the CCV on the valve cover affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
1906469
Mfg#:
11127584128
In Stock
2% off MSRP

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

$55.68

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

$54.79 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Relay - Salmon Red

ES#31912 - 12631742690 - Relay - Salmon Red - Used in many places on late model BMWs - Genuine BMW - BMW MINI

Used in many places on late model BMWs affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Secondary air pump relay

Brand:
Genuine BMW - Corporate Logo
ES#:
31912
Mfg#:
12631742690
Ships in 3 Business Days
8% off MSRP

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

$24.99

This product was last offered at the strikethrough price on
06-03-2026

$22.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Front or Rear Manifold

ES#261733 - 11787523434 - Oxygen Sensor - Front or Rear Manifold - Located in the front position of the exhaust manifold - Bosch - BMW

Located in the front position of the exhaust manifold affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
For vehicles with production date from 03/2003

Brand:
Bosch - Corporate Logo
ES#:
261733
Mfg#:
11787523434
In Stock
Limited Qty Sale
$210.65

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

$170.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

B58 Valve Cover

ES#2993793 - 11127645173 - B58 Valve Cover - Genuine BMW Valve Cover with PCV Valve and gaskets - Genuine BMW - BMW

Genuine BMW Valve Cover with PCV Valve and gaskets affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2993793
Mfg#:
11127645173
Ships in 5 Business Days
4% off MSRP

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

$693.99

This product was last offered at the strikethrough price on
06-03-2026

$667.99 USD
This product is lifetime replacement eligible Lifetime Replacement

"Cold Climate" Crankcase Ventilation Valve Kit

ES#4782756 - 11617533400S1 - "Cold Climate" Crankcase Ventilation Valve Kit - Improved CCV hose and valve kit tailored for vehicles used in frigid temperatures! - Febi - BMW

Improved CCV hose and valve kit tailored for vehicles used in frigid temperatures! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
4782756
Mfg#:
11617533400S1
In Stock
$238.99

This product was last offered at the strikethrough price on
04-14-2026

$179.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

CCV Hose

ES#2993799 - 11157637521 - CCV Hose - Notorious for failure on most BMWs. - Genuine BMW - BMW

Notorious for failure on most BMWs. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2993799
Mfg#:
11157637521
In Stock
$62.95

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

$59.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Aluminum Vacuum Hose F-Connector

ES#3046177 - 012178ECS01 - Aluminum Vacuum Hose F-Connector - No more brittle plastic vacuum connectors - end vacuum leaks once and for all! - ECS - BMW

No more brittle plastic vacuum connectors - end vacuum leaks once and for all! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3046177
Mfg#:
012178ECS01
In Stock
ON SALE! SAVE 35%
$52.99

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

$34.44 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Downstream Catalytic Converter

ES#3031909 - 11787589475 - Oxygen Sensor - Downstream Catalytic Converter - 690mm. Rear O2 sensor/Lambda probe - Bosch - BMW
ECS Tuning recommends this product.

690mm. Rear O2 sensor/Lambda probe affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Up to 07/2013 production date

Brand:
Bosch - Corporate Logo
ES#:
3031909
Mfg#:
11787589475
In Stock
$223.99

This product was last offered at the strikethrough price on
04-30-2026

$172.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

CCV Hose

ES#2798172 - 11127850244 - CCV Hose - Connects to the front turbo inlet hose - Genuine BMW - BMW

Connects to the front turbo inlet hose affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2798172
Mfg#:
11127850244
In Stock
4% off MSRP

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

$162.92

This product was last offered at the strikethrough price on
06-03-2026

$156.95 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.

Other BMW Engine Emission Parts

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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