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BMW E46 323i M52 2.5L

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BMW E46 323i M52 2.5L Engine Emission Parts

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Crankcase Pressure Regulator Valve

ES#5374429 - ABH0263 - Crankcase Pressure Regulator Valve - Commonly referred to as the "oil separator" - Rein - BMW

Commonly referred to as the "oil separator" 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Rein - Corporate Logo
ES#:
5374429
Mfg#:
ABH0263
In Stock
ON SALE!
$23.99

This product was last offered at the strikethrough price on
08-31-2026

$22.35 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankcase Ventilation Hose

ES#2762634 - 11611432559 - Crankcase Ventilation Hose - From oil separator to valve cover. Made in Germany. - Rein - BMW

From oil separator to valve cover. Made in Germany. 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2762634
Mfg#:
11611432559
In Stock
ON SALE!
$16.99

This product was last offered at the strikethrough price on
08-31-2026

$16.14 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Vacuum Control Valve

ES#5388809 - 11747810831 - Vacuum Control Valve - Used in emissions and noise reduction systems - Bremmen Parts - BMW

Used in emissions and noise reduction systems 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
5388809
Mfg#:
11747810831
In Stock
ON SALE! SAVE 21%
$26.99

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

$21.21 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Check Valve

ES#25394 - 11611312737 - Check Valve - Common source of emission related issues - Genuine BMW - BMW

Common source of emission related issues

Brand:
Genuine BMW - Corporate Logo
ES#:
25394
Mfg#:
11611312737
Ships in 3 Business Days
5% off MSRP

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

$42.99

This product was last offered at the strikethrough price on
09-03-2026

$40.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Pump Mount

ES#2534428 - 11727559515 - Secondary Air Pump Mount - 3 required per car - URO - BMW

3 required per car 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2534428
Mfg#:
11727559515
In Stock
$6.99

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

$4.79 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Catch Can O-ring

ES#3097721 - N1.50X051 - ECS Catch Can O-ring - Replacement ECS catch can O-ring - ECS - Audi BMW Volkswagen MINI

Replacement ECS catch can O-ring 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
3097721
Mfg#:
N1.50X051
In Stock
ON SALE! SAVE 25%
$5.99

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

$4.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Leak Detection Pump - Priced Each

ES#37298 - 16137193479 - Leak Detection Pump - Priced Each - Located under the vehicle, near the transmission bellhousing or in the rear. Used to diagnose leaks in the evap system. - Genuine BMW - BMW MINI

Located under the vehicle, near the transmission bellhousing or in the rear. Used to diagnose leaks in the evap system. For vehicles with production date from 09/2001

Brand:
Genuine BMW - Corporate Logo
ES#:
37298
Mfg#:
16137193479
Ships in 3 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.

$266.99

This product was last offered at the strikethrough price on
09-03-2026

$250.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Breather Hose Kit

ES#5375102 - ABK0128 - Breather Hose Kit - Improved CCV hose and valve kit tailored for vehicles used in frigid temperatures! - Rein - BMW

Improved CCV hose and valve kit tailored for vehicles used in frigid temperatures! 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Rein - Corporate Logo
ES#:
5375102
Mfg#:
ABK0128
Back Ordered
ON SALE!
$261.99

This product was last offered at the strikethrough price on
08-31-2026

$248.80 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hex Nut - Priced Each

ES#241175 - 07119905515 - Hex Nut - Priced Each - Used in various locations - Genuine BMW - BMW MINI

Used in various locations

Brand:
Genuine BMW - Corporate Logo
ES#:
241175
Mfg#:
07119905515
In Stock
$1.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankcase Ventilation Hose

ES#4818513 - 11157532649 - Crankcase Ventilation Hose - From oil separator to dipstick tube - Bremmen Parts - BMW

From oil separator to dipstick tube 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818513
Mfg#:
11157532649
In Stock
ON SALE! SAVE 24%
$15.99

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

$12.23 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

"Cold Climate" Oil Separator Kit

ES#2730263 - 11617534237 - "Cold Climate" Oil Separator Kit - Insulated design for superior cold weather performance - URO - BMW

Insulated design for superior cold weather performance 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat! Superior performance for both warm and cold climates

Brand:
URO - Corporate Logo
ES#:
2730263
Mfg#:
11617534237
Ships in 2 Business Days
$74.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Upper Oil Separator Vent Tube

ES#25711 - 11617504535 - Upper Oil Separator Vent Tube - Runs from the top of the oil separator up to intake manifold - Genuine BMW - BMW

Runs from the top of the oil separator up to intake manifold For vehicles with production date from 01/2000

Brand:
Genuine BMW - Corporate Logo
ES#:
25711
Mfg#:
11617504535
Ships in 3 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.

$42.99

This product was last offered at the strikethrough price on
09-03-2026

$41.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Leak Diagnosis Pump

ES#2702165 - 16136756440 - Leak Diagnosis Pump - Located under the vehicle, near the transmission bellhousing or in the rear. - Bosch - BMW

Located under the vehicle, near the transmission bellhousing or in the rear. We Price Match - Give Us A Call or Chat!
For vehicles with production date up to 09/2001

Brand:
Bosch - Corporate Logo
ES#:
2702165
Mfg#:
16136756440
Back Ordered
$221.99

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

$202.11 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankcase Ventilation Hose

ES#19638 - 11157532649 - Crankcase Ventilation Hose - From oil separator to dipstick tube - Genuine BMW - BMW

From oil separator to dipstick tube

Brand:
Genuine BMW - Corporate Logo
ES#:
19638
Mfg#:
11157532649
Ships in 3 Business Days
$39.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Upper Oil Separator Vent Tube

ES#3673407 - 11617533399 - Upper Oil Separator Vent Tube - Runs from the top of the oil separator up to intake manifold - Bremmen Parts - BMW

Runs from the top of the oil separator up to intake manifold 10X Entries Into Our F80 M3 Sweepstakes
For use in cold climates

Brand:
Bremmen Parts - Corporate Logo
ES#:
3673407
Mfg#:
11617533399
In Stock
ON SALE! SAVE 22%
$22.99

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

$17.94 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.

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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