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BMW Engine Emission Parts

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Gas Cap

ES#35966 - 16111184731 - Gas Cap - Complete with sealing gasket - Genuine BMW - BMW

Complete with sealing gasket For vehicles with production date up to 08/1999

Brand:
Genuine BMW - Corporate Logo
ES#:
35966
Mfg#:
16111184731
In Stock
3% off MSRP

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

$69.99

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

$67.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Truck Series DPF Protector - 500ml / 16.9oz

ES#3999019 - 20258 - Truck Series DPF Protector - 500ml / 16.9oz - Improves engine performance and emissions control - Reduces clogging of the DPF caused by soot as a combustion product - Liqui-Moly - BMW Volkswagen Porsche

Improves engine performance and emissions control - Reduces clogging of the DPF caused by soot as a combustion product 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Liqui-Moly - Corporate Logo
ES#:
3999019
Mfg#:
20258
Ships in 10 Business Days
Auto Notify
38% off MSRP

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

$18.99

This product was last offered at the strikethrough price on
07-09-2026

$11.85 USD
Free Shipping
on orders $49 and up

Oil Separator Kit - Level 2

ES#3108048 - E46M54OSW3KT2 - Oil Separator Kit - Level 2 - A truly complete kit for oil separator system maintenance, Includes ECS F-Connector - Assembled By ECS - BMW

A truly complete kit for oil separator system maintenance, Includes ECS F-Connector 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3108048
Mfg#:
E46M54OSW3KT2
In Stock
ON SALE! SAVE 23%
$226.99

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

$174.78 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Backpressure Sensor - Priced Each

ES#254356 - 13627808013 - Exhaust Backpressure Sensor - Priced Each - (Differential Pressure Sensor) - Genuine BMW - BMW

(Differential Pressure Sensor)

Brand:
Genuine BMW - Corporate Logo
ES#:
254356
Mfg#:
13627808013
Ships in 2 Business Days
ON SALE!
$110.99

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

$108.52 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor

ES#4879319 - 11787589475 - Oxygen Sensor - N54 N55 N20 Direct-fit OE replacement design restores proper oxygen sensor function and engine air/fuel mixture - URO - BMW

N54 N55 N20 Direct-fit OE replacement design restores proper oxygen sensor function and engine air/fuel mixture 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4879319
Mfg#:
11787589475
In Stock
ON SALE!
$69.99

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

$66.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Suction Jet Pump

ES#25798 - 11617545382 - Suction Jet Pump - A common source for vacuum leaks - Genuine BMW - BMW

A common source for vacuum leaks

Brand:
Genuine BMW - Corporate Logo
ES#:
25798
Mfg#:
11617545382
Ships in 2 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.

$87.99

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

$85.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Fuel Tank Breather Hose with Sucking Jet Pump

ES#2159228 - 13907595191 - Fuel Tank Breather Hose with Sucking Jet Pump - Genuine BMW - BMW

Brand:
Genuine BMW - Corporate Logo
ES#:
2159228
Mfg#:
13907595191
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.

$81.00

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

$77.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Post-Catalytic Converter

ES#2993822 - 11788611294 - Oxygen Sensor - Post-Catalytic Converter - Genuine downstream O2 Sensor - Genuine BMW - BMW

Genuine downstream O2 Sensor

Brand:
Genuine BMW - Corporate Logo
ES#:
2993822
Mfg#:
11788611294
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
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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 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

Crankcase Pressure Regulator Valve

ES#4304692 - 11617501566 - Crankcase Pressure Regulator Valve - Commonly referred to as the "oil separator" or PCV - Bavarian Autosport - BMW

Commonly referred to as the "oil separator" or PCV 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bavarian Autosport - Corporate Logo
ES#:
4304692
Mfg#:
11617501566
In Stock
ON SALE! SAVE 20%
$32.99

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

$26.39 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Separator Kit - Level 1

ES#260025 - e46m5411_61 - Oil Separator Kit - Level 1 - The most commonly replaced components in your breather system - Assembled By ECS - BMW

The most commonly replaced components in your breather system 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
260025
Mfg#:
E46M5411_61
In Stock
ON SALE! SAVE 24%
$123.99

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

$93.71 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Secondary air pump clutch

ES#26611 - 11721318481 - Secondary air pump clutch - Air pump pulley and magnetic clutch - Genuine BMW - BMW

Air pump pulley and magnetic clutch

Brand:
Genuine BMW - Corporate Logo
ES#:
26611
Mfg#:
11721318481
Ships in 7 Business Days
1% off MSRP

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

$847.99

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

$842.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor

ES#27212 - 11781742051 - Oxygen Sensor - Rear, after catalyst - Genuine BMW - BMW

Rear, after catalyst

Brand:
Genuine BMW - Corporate Logo
ES#:
27212
Mfg#:
11781742051
Ships in 4 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.

$445.99

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

$418.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Suction Pump

ES#2718928 - 11617545382 - Suction Pump - A common source for vacuum leaks - URO - BMW

A common source for vacuum leaks 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2718928
Mfg#:
11617545382
In Stock
$59.62 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Gas Cap - Non Locking

ES#35962 - 16111184718 - Gas Cap - Non Locking - Includes sealing gasket - Genuine BMW - BMW

Includes sealing gasket

Brand:
Genuine BMW - Corporate Logo
ES#:
35962
Mfg#:
16111184718
Ships in 1 day
15% off MSRP

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

$69.99

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

$59.51 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Downstream

ES#4820838 - 11787645875 - Oxygen Sensor - Downstream - 550mm. Rear O2 sensor/Lambda probe - Walker - BMW

550mm. Rear O2 sensor/Lambda probe

Brand:
Walker - Corporate Logo
ES#:
4820838
Mfg#:
11787645875
In Stock at Vendor
$101.99

This product was last offered at the strikethrough price on
04-12-2026

$91.99 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.

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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