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BMW Engine Emission Parts

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N55 Silicone Upgraded Crank Case Vent Hose

ES#4876617 - 018481LA01 - N55 Silicone Upgraded Crank Case Vent Hose - Replace the weak link in your crank case vent hose with our silicone upgrade! - ECS - BMW

Replace the weak link in your crank case vent hose with our silicone upgrade! 10X Entries For Our 25th Anniversary Sweepstakes!
10X Entries For Our Spin To Win Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4876617
Mfg#:
018481LA01
Ships on Sep 21, 2026
Auto Notify
ON SALE! SAVE 25%
$26.99

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

$20.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Pump

ES#26652 - 11721433959 - Secondary Air Pump - Common source of emissons related issues - Genuine BMW - BMW

Common source of emissons related issues

Brand:
Genuine BMW - Corporate Logo
ES#:
26652
Mfg#:
11721433959
Ships in 7 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.

$583.99

This product was last offered at the strikethrough price on
07-21-2026

$564.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Rear

ES#2523381 - 11787589122 - Oxygen Sensor - Rear - Fuel control and emissions sensor - Genuine BMW - BMW

Fuel control and emissions sensor

Brand:
Genuine BMW - Corporate Logo
ES#:
2523381
Mfg#:
11787589122
Ships in 2 Business Days
13% off MSRP

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

$325.99

This product was last offered at the strikethrough price on
07-21-2026

$281.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Oxygen Sensor - Bank 2 Post-Cat

ES#27275 - 11787545075 - Rear Oxygen Sensor - Bank 2 Post-Cat - Fuel control and emissions control sensor - Genuine BMW - BMW

Fuel control and emissions control sensor

Brand:
Genuine BMW - Corporate Logo
ES#:
27275
Mfg#:
11787545075
Ships in 2 Business Days
13% off MSRP

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

$325.99

This product was last offered at the strikethrough price on
07-21-2026

$281.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

o2 sensor - Post cat

ES#2589930 - 11787614322 - o2 sensor - Post cat - Replace worn out and or malfunctioning O2 sensors to make your vehicles emissions compliant - Genuine BMW - BMW

Replace worn out and or malfunctioning O2 sensors to make your vehicles emissions compliant

Brand:
Genuine BMW - Corporate Logo
ES#:
2589930
Mfg#:
11787614322
Ships in 1 day
13% off MSRP

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

$325.99

This product was last offered at the strikethrough price on
07-21-2026

$281.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Crankcase Vent Pipe - Cylinders 1-4

ES#254006 - 11157575640 - Crankcase Vent Pipe - Cylinders 1-4 - Replace your damaged crank vent pipe - Genuine BMW - BMW

Replace your damaged crank vent pipe

Brand:
Genuine BMW - Corporate Logo
ES#:
254006
Mfg#:
11157575640
Ships in 2 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.

$72.99

This product was last offered at the strikethrough price on
07-21-2026

$69.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

S65 Catchan Kit Project With ESS Supercharged Hoses

ES#4920479 - S65CCSK-2 - S65 Catchan Kit Project With ESS Supercharged Hoses - A must-have for E9x BMW M3 owners looking to ensure clean airflow, reduce carbon deposits, and maintain peak engine performance. - NRW Design - BMW

A must-have for E9x BMW M3 owners looking to ensure clean airflow, reduce carbon deposits, and maintain peak engine performance.

Brand:
NRW Design - Corporate Logo
ES#:
4920479
Mfg#:
S65CCSK-2
Ships in 3 Business Days
$555.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

EGR VALVE

ES#4840048 - 11718512526 - EGR VALVE - Original Equipment Supplier - BMW

Brand:
Original Equipment Supplier - Corporate Logo
ES#:
4840048
Mfg#:
11718512526
Ships in 1 day
$568.99

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

$552.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Fuel Tank Breather Valve

ES#3699049 - 13901433603 - Fuel Tank Breather Valve - Valve between charcoal canister and throttle body - URO - BMW

Valve between charcoal canister and throttle body 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
3699049
Mfg#:
13901433603
Ships in 1 Business Day
$49.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Injection Control Valve

ES#26837 - 11727557909 - Secondary Air Injection Control Valve - Controls the flow of clean air into your exhaust manifold - Genuine BMW - BMW

Controls the flow of clean air into your exhaust manifold

Brand:
Genuine BMW - Corporate Logo
ES#:
26837
Mfg#:
11727557909
Ships in 2 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.

$148.32

This product was last offered at the strikethrough price on
07-21-2026

$136.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Fuel Tank Ventilation Valve Pipe

ES#2135806 - 13907618643 - Fuel Tank Ventilation Valve Pipe - Allows fuel fumes to vent into the engine's intake - Genuine BMW - BMW

Allows fuel fumes to vent into the engine's intake

Brand:
Genuine BMW - Corporate Logo
ES#:
2135806
Mfg#:
13907618643
Ships in 1 day
5% off MSRP

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

$143.99

This product was last offered at the strikethrough price on
07-21-2026

$136.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Upper Oil Separator Vent Tube

ES#4338782 - 11617504535 - Upper Oil Separator Vent Tube - Runs from the top of the oil separator up to intake manifold. - Bavarian Autosport - BMW

Runs from the top of the oil separator up to intake manifold. 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with production date from 01/2000

Brand:
Bavarian Autosport - Corporate Logo
ES#:
4338782
Mfg#:
11617504535
In Stock
ON SALE! SAVE 20%
$24.99

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

$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crank Case Vent Hose

ES#3493892 - 11157559528 - Crank Case Vent Hose - For PCV system - Rein - BMW

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

Brand:
Rein - Corporate Logo
ES#:
3493892
Mfg#:
11157559528
In Stock
$48.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

EGR Valve Replacement Kit

ES#4315403 - 11718517217KT - EGR Valve Replacement Kit - Includes new EGR valve and gaskets - Assembled By ECS - BMW

Includes new EGR valve and gaskets 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4315403
Mfg#:
11718517217KT
Ships in 2 Business Days
$535.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Venting Line With Leak Diagnosis Module

ES#3231023 - 16137373623 - Venting Line With Leak Diagnosis Module - Genuine BMW - BMW

With Dust Filter

Brand:
Genuine BMW - Corporate Logo
ES#:
3231023
Mfg#:
16137373623
Ships in 2 Business 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.

$189.99

This product was last offered at the strikethrough price on
07-21-2026

$177.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Activated Charcoal filter

ES#37142 - 16131184608 - Activated Charcoal filter - Also known as a " charcoal canister" - Genuine BMW - BMW

Also known as a " charcoal canister"

Brand:
Genuine BMW - Corporate Logo
ES#:
37142
Mfg#:
16131184608
Ships in 4 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.

$548.99

This product was last offered at the strikethrough price on
07-21-2026

$530.99 USD
Free Shipping
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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