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BMW Engine Emission Parts

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E38 Catalytic Converter Control Unit

ES#28371 - 12141712970 - E38 Catalytic Converter Control Unit - Relays catalyst information to the ECU - Genuine BMW - BMW

Relays catalyst information to the ECU

Brand:
Genuine BMW - Corporate Logo
ES#:
28371
Mfg#:
12141712970
Ships in 3 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.

$738.99

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

$714.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Fuel Tank Vent Hose

ES#36498 - 16121177553 - Fuel Tank Vent Hose - Attaches to charcoal canister - Genuine BMW - BMW

Attaches to charcoal canister

Brand:
Genuine BMW - Corporate Logo
ES#:
36498
Mfg#:
16121177553
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.

$55.99

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

$54.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Return Pipe

ES#4304670 - 11617504536 - Return Pipe - Runs from the intake manifold back to connecting hose - Bavarian Autosport - BMW

Runs from the intake manifold back to connecting hose 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with production date from 01/2000

Brand:
Bavarian Autosport - Corporate Logo
ES#:
4304670
Mfg#:
11617504536
In Stock
ON SALE! SAVE 20%
$26.99

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

$21.59 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 3 Business Days
$707.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Pump Kit - Level 2

ES#2622518 - 11727571589KT1 - Secondary Air Pump Kit - Level 2 - This comprehensive air pump kit includes all lines, valves, pump, and hardware. - Assembled By ECS - BMW

This comprehensive air pump kit includes all lines, valves, pump, and hardware. 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with production date from 03/2003

Brand:
Assembled By ECS - Corporate Logo
ES#:
2622518
Mfg#:
11727571589KT1
Ships in 4 Business Days
$746.99

This product was last offered at the strikethrough price on
03-21-2026

$701.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Pump Kit - Level 2

ES#2622492 - 11727553056KT1 - Secondary Air Pump Kit - Level 2 - This comprehensive air pump kit includes all lines, valves, pump, and hardware. - Assembled By ECS - BMW

This comprehensive air pump kit includes all lines, valves, pump, and hardware. 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with production date up to 03/2003

Brand:
Assembled By ECS - Corporate Logo
ES#:
2622492
Mfg#:
11727553056KT1
Ships on Sep 28, 2026
Auto Notify
$756.99

This product was last offered at the strikethrough price on
03-21-2026

$701.99 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

Activated charcoal filter

ES#37273 - 16137162350 - Activated charcoal filter - Also known as a "charcoal canister" - Genuine BMW - BMW

Also known as a "charcoal canister"

Brand:
Genuine BMW - Corporate Logo
ES#:
37273
Mfg#:
16137162350
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.

$237.99

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

$229.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Crankcase Vent Pipe - Cylinders 1-4

ES#3493926 - 11157575640 - Crankcase Vent Pipe - Cylinders 1-4 - Replace your damaged crank vent pipe - Rein - BMW

Replace your damaged crank vent pipe 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
3493926
Mfg#:
11157575640
In Stock
$42.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E46 Activated Charcoal Filter

ES#37255 - 16136765271 - E46 Activated Charcoal Filter - Also known as a "charcoal canister" - Genuine BMW - BMW

Also known as a "charcoal canister"

Brand:
Genuine BMW - Corporate Logo
ES#:
37255
Mfg#:
16136765271
In Stock
ON SALE!
$355.99

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

$339.97 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor

ES#3038247 - 11787539137 - Oxygen Sensor - Bosch - BMW

2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
For vehicles with production date from 10/09 | Rear

Brand:
Bosch - Corporate Logo
ES#:
3038247
Mfg#:
11787539137
In Stock at Vendor
$99.99

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

$96.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Separator Kit - Level 2

ES#2550208 - e46m54osw2kt - Oil Separator Kit - Level 2 - A truly complete kit for oil separator system maintenance - Assembled By ECS - BMW

A truly complete kit for oil separator system maintenance 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2550208
Mfg#:
E46M54OSW2KT
In Stock
ON SALE! SAVE 22%
$172.86

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

$134.84 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Pump

ES#26641 - 11721432907 - Secondary Air Pump - Clear trouble codes and prevent a failed emissions check - Genuine BMW - BMW

Clear trouble codes and prevent a failed emissions check

Brand:
Genuine BMW - Corporate Logo
ES#:
26641
Mfg#:
11721432907
Ships in 2 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.

$689.99

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

$667.99 USD
Free Shipping
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 3 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

Hose Elbow

ES#33149 - 13417837597 - Hose Elbow - Attaches to the idle regulating valve - Genuine BMW - BMW

Attaches to the idle regulating valve

Brand:
Genuine BMW - Corporate Logo
ES#:
33149
Mfg#:
13417837597
Ships in 1 day
3% off MSRP

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

$67.99

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

$65.99 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

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

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