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BMW E46 325Ci M54 2.5L

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BMW E46 325Ci M54 2.5L Engine Emission Parts

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Vacuum Control Valve

ES#4069996 - 11611312737 - Vacuum Control Valve - Common source of emission related issues - Pierburg - BMW

Common source of emission related issues affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Pierburg - Corporate Logo
ES#:
4069996
Mfg#:
11611312737
In Stock
$27.99 USD
Free Shipping
on orders $49 and up
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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 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 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3108048
Mfg#:
E46M54OSW3KT2
Ships on Jul 6, 2026
Auto Notify
ON SALE! SAVE 24%
$226.99

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

$172.53 USD
Free Shipping
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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
260025
Mfg#:
E46M5411_61
Ships on Jul 6, 2026
Auto Notify
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

"Cold Climate" Crankcase Pressure Regulator Valve

ES#25780 - 11617533400 - "Cold Climate" Crankcase Pressure Regulator Valve - Commonly referred to as the "oil separator" or PCV - Genuine BMW - BMW

Commonly referred to as the "oil separator" or PCV affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Superior performance for both warm and cold climates

Brand:
Genuine BMW - Corporate Logo
ES#:
25780
Mfg#:
11617533400
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.

$119.99

This product was last offered at the strikethrough price on
06-07-2026

$116.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Suction Pump (Vacuum Pump)

ES#4845485 - 11617545382 - Suction Pump (Vacuum Pump) - A common source for vacuum leaks. Rein is an OE style brand that you can trust to replace components at a fraction of the cost. - Rein - BMW

A common source for vacuum leaks. Rein is an OE style brand that you can trust to replace components at a fraction of the cost. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4845485
Mfg#:
11617545382
In Stock
$40.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

"Cold Climate" Crankcase Pressure Regulator Valve Kit

ES#4783145 - 11617533400S1 - "Cold Climate" Crankcase Pressure Regulator Valve Kit - Replace your cracked breather hoses and crankcase pressure valve with all new components! - Hamburg Tech - BMW

Replace your cracked breather hoses and crankcase pressure valve with all new components! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat! Superior performance for both warm and cold climates

Brand:
Hamburg Tech - Corporate Logo
ES#:
4783145
Mfg#:
11617533400S1
Ships in 1-3 days
$110.95 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Air Distributor

ES#25494 - 11611440318 - Air Distributor - Located on top of the intake manifold. Includes new o-rings. - Genuine BMW - BMW

Located on top of the intake manifold. Includes new o-rings. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
25494
Mfg#:
11611440318
Ships in 3 Business Days
$127.06 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#27153 - 11781433940 - Oxygen Sensor - Priced Each - 2 Required in each application - Genuine BMW - BMW

2 Required in each application affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with production date up to 03/2003

Brand:
Genuine BMW - Corporate Logo
ES#:
27153
Mfg#:
11781433940
Ships in 3 Business Days
7% off MSRP

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

$404.99

This product was last offered at the strikethrough price on
06-07-2026

$377.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#27124 - 11781247406 - Oxygen Sensor - Priced Each - 2 required in each application - Genuine BMW - BMW

2 required in each application affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
27124
Mfg#:
11781247406
Ships in 3 Business Days
7% off MSRP

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

$404.99

This product was last offered at the strikethrough price on
06-07-2026

$377.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Leak Diagnosis Pump

ES#37224 - 16136756440 - Leak Diagnosis Pump - Located under the vehicle, near the transmission bellhousing or in the rear. - Genuine BMW - BMW

Located under the vehicle, near the transmission bellhousing or in the rear. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with production date up to 09/2001

Brand:
Genuine BMW - Corporate Logo
ES#:
37224
Mfg#:
16136756440
Ships in 3 Business Days
7% off MSRP

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

$258.99

This product was last offered at the strikethrough price on
06-07-2026

$241.99 USD
Free Shipping
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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

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

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" affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
37255
Mfg#:
16136765271
Ships in 1-2 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.

$369.99

This product was last offered at the strikethrough price on
06-07-2026

$355.99 USD
Free Shipping
on orders $49 and up
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. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 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 6 Business Days
$746.99

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

$700.99 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. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 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 in 6 Business Days
$756.99

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

$698.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oil Dipstick Guide Tube

ES#24241 - 11437531258 - Oil Dipstick Guide Tube - The guide tube for the dipstick - Genuine BMW - BMW

The guide tube for the dipstick affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
24241
Mfg#:
11437531258
In Stock
5% off MSRP

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

$168.99

This product was last offered at the strikethrough price on
06-07-2026

$159.99 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.

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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