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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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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 Into Our F80 M3 Sweepstakes
For vehicles with production date up to 03/2003

Brand:
Assembled By ECS - Corporate Logo
ES#:
2622492
Mfg#:
11727553056KT1
Ships in 9 Business Days
$718.99

This product was last offered at the strikethrough price on
10-22-2026

$717.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

E46 Secondary Air Pump

ES#2574862 - 11727553056 - E46 Secondary Air Pump - Located in the right portion of the engine bay, near the shock tower and windshield wiper fluid reservoir - Pierburg - BMW
ECS Tuning recommends this product.

Located in the right portion of the engine bay, near the shock tower and windshield wiper fluid reservoir

Brand:
Pierburg - Corporate Logo
ES#:
2574862
Mfg#:
11727553056
Ships in 1-2 days
$328.99 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 Into Our F80 M3 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

IE Vent To Atmosphere Billet Catch Can - Universal Fitment

ES#2794762 - IEDIYUU18 - IE Vent To Atmosphere Billet Catch Can - Universal Fitment - Prevent crankcase oil fumes from condensing and filling your intake piping, turbo piping, intercooler, intake manifold, and breather system - Integrated Engineering - Audi BMW Volkswagen MINI

Prevent crankcase oil fumes from condensing and filling your intake piping, turbo piping, intercooler, intake manifold, and breather system

Brand:
Integrated Engineering - Corporate Logo
ES#:
2794762
Mfg#:
IEDIYUU18
Ships in 1 Business Day
$186.99 USD
Free Shipping

Engine Crankcase Breather Element

ES#4866071 - 11617533400 - Engine Crankcase Breather Element - Commonly referred to as the "oil separator" or PCV - Hengst - BMW
ECS Tuning recommends this product.

Commonly referred to as the "oil separator" or PCV 5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Superior performance for both warm and cold climates

Brand:
Hengst - Corporate Logo
ES#:
4866071
Mfg#:
11617533400
In Stock
$41.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Vacuum Cap

ES#25468 - 11611437560 - Vacuum Cap - Used in various locations under the hood - Genuine BMW - BMW

Used in various locations under the hood

Brand:
Genuine BMW - Corporate Logo
ES#:
25468
Mfg#:
11611437560
In Stock
$6.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Universal 10AN ORB To 3/8" Barb

ES#4460630 - rad20-0530 - Universal 10AN ORB To 3/8" Barb - This PCV can be used on the outlet of any Radium Engineering catch can - Radium Engineering - Audi BMW Volkswagen Mercedes Benz MINI Porsche

This PCV can be used on the outlet of any Radium Engineering catch can

Brand:
Radium Engineering - Corporate Logo
ES#:
4460630
Mfg#:
RAD20-0530
In Stock
$37.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Pump Vacuum Line

ES#26851 - 11727574490 - Secondary Air Pump Vacuum Line - Replacement line - Genuine BMW - BMW

Replacement line

Brand:
Genuine BMW - Corporate Logo
ES#:
26851
Mfg#:
11727574490
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.

$58.99

This product was last offered at the strikethrough price on
10-24-2026

$56.99 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 1-2 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
10-24-2026

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

Secondary Air Pump Kit - Level 1

ES#2622539 - 11727553056KT3 - Secondary Air Pump Kit - Level 1 - This essential kit includes the secondary air pump, control valve, hoses and hardware to mount pump and valve. - Assembled By ECS - BMW

This essential kit includes the secondary air pump, control valve, hoses and hardware to mount pump and valve. 10X Entries Into Our F80 M3 Sweepstakes
For vehicles with production date up to 03/2003

Brand:
Assembled By ECS - Corporate Logo
ES#:
2622539
Mfg#:
11727553056KT3
Ships in 3 Business Days
$475.99

This product was last offered at the strikethrough price on
08-26-2026

$465.99 USD
Free Shipping
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 1 Business Day
$74.99 USD
Free Shipping
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
Ships in 1 Business Day
$17.92 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E46 Activated Charcoal Filter

ES#37075 - 16131183893 - E46 Activated Charcoal Filter - Also known as a "charcoal canister" - Genuine BMW - BMW

Also known as a "charcoal canister" This is only the Charcoal Filter (does not come with pump)

Brand:
Genuine BMW - Corporate Logo
ES#:
37075
Mfg#:
16131183893
Ships in 1-2 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.

$456.99

This product was last offered at the strikethrough price on
10-24-2026

$441.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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
$23.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Return Pipe

ES#25712 - 11617504536 - Return Pipe - Runs from the intake manifold back to connecting hose - Genuine BMW - BMW

Runs from the intake manifold back to connecting hose For vehicles with production date from 01/2000

Brand:
Genuine BMW - Corporate Logo
ES#:
25712
Mfg#:
11617504536
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.

$43.99

This product was last offered at the strikethrough price on
10-24-2026

$42.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankcase Ventilation Hose

ES#3673406 - 11617533398 - Crankcase Ventilation Hose - From oil separator to valve cover - Bavarian Autosport - BMW

From oil separator to valve cover 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bavarian Autosport - Corporate Logo
ES#:
3673406
Mfg#:
11617533398
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

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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