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BMW E90 Engine Emission Parts

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Rear Oxygen Sensor - Bank 1 post-Cat

ES#27274 - 11787545074 - Rear Oxygen Sensor - Bank 1 post-Cat - Fuel control and emissions control sensor - Genuine BMW - BMW

Fuel control and emissions control sensor

Brand:
Genuine BMW - Corporate Logo
ES#:
27274
Mfg#:
11787545074
Ships in 4 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
07-20-2026

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

Oil Separator Vent Hose

ES#4818548 - 11617559530 - Oil Separator Vent Hose - Should be replaced with the oil separator - Bremmen Parts - BMW

Should be replaced with the oil separator 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818548
Mfg#:
11617559530
In Stock
ON SALE! SAVE 20%
$42.99

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

$34.26 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankcase Ventilation Return Pipe

ES#3493890 - 11157567801 - Crankcase Ventilation Return Pipe - Located under intake manifold - Rein - BMW

Located under intake manifold 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
3493890
Mfg#:
11157567801
In Stock at Vendor
$81.20 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Nitrogen Oxide Sensor (NOx Sensor)

ES#3193112 - 13628589845 - Nitrogen Oxide Sensor (NOx Sensor) - Genuine BMW - BMW

After catalyst.

Brand:
Genuine BMW - Corporate Logo
ES#:
3193112
Mfg#:
13628589845
Ships in 4 Business 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.

$815.99

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

$795.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Gas Cap

ES#5396193 - 16117222391 - Gas Cap - Complete with sealing gasket and tether. - Bremmen Parts - BMW MINI
ECS Tuning recommends this product.

Complete with sealing gasket and tether. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
5396193
Mfg#:
16117222391
In Stock
ON SALE! SAVE 15%
$19.99

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

$16.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Oxygen Sensor - Bank 2 Post-Cat

ES#3625133 - 11787545075 - Rear Oxygen Sensor - Bank 2 Post-Cat - Fuel control and emissions control sensor - FAE - BMW

Fuel control and emissions control sensor

Brand:
FAE - Corporate Logo
ES#:
3625133
Mfg#:
11787545075
In Stock
ON SALE!
$78.99

This product was last offered at the strikethrough price on
06-25-2026

$75.04 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Separator Service Kit

ES#2825780 - 11617531423KT3 - Oil Separator Service Kit - Includes valve and all necessary hoses - Genuine BMW - BMW

Includes valve and all necessary hoses For vehicles with production date up to 10/2005

Brand:
Genuine BMW - Corporate Logo
ES#:
2825780
Mfg#:
11617531423KT3
Ships in 5 Business Days
$707.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

SCR Metering Valve

ES#3172506 - 18307807206 - SCR Metering Valve - Replace your faulty valve - Bosch - BMW

Replace your faulty valve 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
3172506
Mfg#:
18307807206
In Stock at Vendor
$359.99

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

$348.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Separator Service Kit

ES#2682267 - 11617531423KT - Oil Separator Service Kit - Includes valve and all necessary hoses - Genuine BMW - BMW

Includes valve and all necessary hoses For vehicles with production date from 10/2005

Brand:
Genuine BMW - Corporate Logo
ES#:
2682267
Mfg#:
11617531423KT
Ships in 5 Business Days
$664.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Crankcase Breather Hose

ES#4809973 - 11127584128 - Crankcase Breather Hose - Connects to the CCV on the valve cover - URO - BMW

Connects to the CCV on the valve cover 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4809973
Mfg#:
11127584128
In Stock
$38.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Injection Control Valve

ES#4070001 - 11727557909 - Secondary Air Injection Control Valve - Controls the flow of clean air into your exhaust manifold - Pierburg - BMW

Controls the flow of clean air into your exhaust manifold

Brand:
Pierburg - Corporate Logo
ES#:
4070001
Mfg#:
11727557909
Ships in 1-2 days
$157.58 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Vacuum Pump - Priced Each

ES#254244 - 11667791232 - Vacuum Pump - Priced Each - If your vacuum pump is noisy then it is only a matter of time before it fails. - Genuine BMW - BMW

If your vacuum pump is noisy then it is only a matter of time before it fails.

Brand:
Genuine BMW - Corporate Logo
ES#:
254244
Mfg#:
11667791232
Ships in 6 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.

$657.99

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

$617.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Air Pump

ES#26878 - 11727838313 - Air Pump - An essential part of your vehicle's emissions system - Genuine BMW - BMW

An essential part of your vehicle's emissions system

Brand:
Genuine BMW - Corporate Logo
ES#:
26878
Mfg#:
11727838313
Ships in 6 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.

$622.99

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

$584.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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

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 4 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
07-20-2026

$281.99 USD
Free Shipping
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 4 Business Days
$555.00 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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