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BMW E46 330Ci M54 3.0L

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BMW E46 330Ci M54 3.0L Engine Emission Parts

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Oxygen Sensor - Front or Rear Manifold

ES#261733 - 11787523434 - Oxygen Sensor - Front or Rear Manifold - Located in the front position of the exhaust manifold - Bosch - BMW

Located in the front position of the exhaust manifold 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
For vehicles with production date from 03/2003

Brand:
Bosch - Corporate Logo
ES#:
261733
Mfg#:
11787523434
In Stock
ON SALE! SAVE 22%
$210.65

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

$165.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

-10AN ORB X 3/4" Hose Barb Fitting Assembly - Priced Each

ES#3187875 - 003779ECS10 - -10AN ORB X 3/4" Hose Barb Fitting Assembly - Priced Each - Universal fitting for ECS Tuning Catch can to use a 3/4" Hose - ECS - Audi BMW Volkswagen MINI

Universal fitting for ECS Tuning Catch can to use a 3/4" Hose 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3187875
Mfg#:
003779ECS10
In Stock
ON SALE! SAVE 25%
$39.99

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

$29.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Pump

ES#4304179 - 11727553056 - Secondary Air Pump - Located in the right portion of the engine bay, near the shock tower and windshield wiper fluid reservoir - URO - BMW

Located in the right portion of the engine bay, near the shock tower and windshield wiper fluid reservoir 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4304179
Mfg#:
11727553056
In Stock
$201.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Separator Kit - Level 2

ES#3108046 - e46m54osw2kt2 - 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#:
3108046
Mfg#:
E46M54OSW2KT2
In Stock
ON SALE! SAVE 22%
$225.85

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

$176.08 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#4870454 - 11781742050 - Oxygen Sensor - Priced Each - 2 required in each application - URO - BMW

2 required in each application 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4870454
Mfg#:
11781742050
In Stock
$49.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Fuel Tank Breather Valve

ES#2771022 - 13901433603 - Fuel Tank Breather Valve - Valve between charcoal canister and throttle body - Vemo - BMW
ECS Tuning recommends this product.

Valve between charcoal canister and throttle body

Brand:
Vemo - Corporate Logo
ES#:
2771022
Mfg#:
13901433603
In Stock at Vendor
$156.99

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

$152.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Gas Cap

ES#2681738 - 16117222391 - Gas Cap - Original equipment gas cap - while supplies last! - Original Equipment Supplier - BMW MINI

Original equipment gas cap - while supplies last!

Brand:
Original Equipment Supplier - Corporate Logo
ES#:
2681738
Mfg#:
16117222391
In Stock
$22.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cold Climate Oil Separator Kit - Level 2

ES#2550206 - E46M54OSC2KT - Cold Climate 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!
Superior performance for both warm and cold climates

Brand:
Assembled By ECS - Corporate Logo
ES#:
2550206
Mfg#:
E46M54OSC2KT
In Stock
ON SALE! SAVE 48%
$261.99

This product was last offered at the strikethrough price on
02-03-2026

$137.46 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Pump

ES#2574864 - 11727571589 - Secondary Air Pump - Common source of emissons related issues - Pierburg - BMW
ECS Tuning recommends this product.

Common source of emissons related issues For vehicles with production date from 03/2003

Brand:
Pierburg - Corporate Logo
ES#:
2574864
Mfg#:
11727571589
In Stock
ON SALE! SAVE 13%
$393.85

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

$341.04 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#252546 - 11781433940 - Oxygen Sensor - Priced Each - 2 Required in each application - Bosch - BMW
ECS Tuning recommends this product.

2 Required in each application 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
For vehicles with production date up to 03/2003

Brand:
Bosch - Corporate Logo
ES#:
252546
Mfg#:
11781433940
In Stock
$147.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Air Pump Control Valve (EGR)

ES#26817 - 11727553063 - Air Pump Control Valve (EGR) - Attached to the secondary air pump - Genuine BMW - BMW

Attached to the secondary air pump For vehicles with production date up to 03/2003

Brand:
Genuine BMW - Corporate Logo
ES#:
26817
Mfg#:
11727553063
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.

$194.99

This product was last offered at the strikethrough price on
07-26-2026

$190.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Fuel Cap

ES#4643099 - MMR03-1501 - Billet Fuel Cap - Upgraded fuel cap that adds the MMX style - MMX Performance - BMW MINI

Upgraded fuel cap that adds the MMX style

Brand:
MMX Performance - Corporate Logo
ES#:
4643099
Mfg#:
MMR03-1501
Ships on Aug 14, 2026
$136.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Vacuum Control Valve

ES#254257 - 11747810831 - Vacuum Control Valve - Used in emissions and noise reduction systems - Genuine BMW - BMW MINI

Used in emissions and noise reduction systems

Brand:
Genuine BMW - Corporate Logo
ES#:
254257
Mfg#:
11747810831
In Stock
10% off MSRP

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

$61.00

This product was last offered at the strikethrough price on
07-26-2026

$54.64 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankcase Pressure Regulator Valve

ES#25703 - 11617501566 - 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

Brand:
Genuine BMW - Corporate Logo
ES#:
25703
Mfg#:
11617501566
Ships in 1 day
6% off MSRP

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

$102.99

This product was last offered at the strikethrough price on
02-18-2026

$96.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Fuel Tank Breather Valve

ES#35479 - 13901433603 - Fuel Tank Breather Valve - Valve between charcoal canister and throttle body - Genuine BMW - BMW

Valve between charcoal canister and throttle body

Brand:
Genuine BMW - Corporate Logo
ES#:
35479
Mfg#:
13901433603
Ships in 2 Business Days
$120.88 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oil Separator Kit - Level 2

ES#3621813 - e46m54osw2kt3 - Oil Separator Kit - Level 2 - A truly complete kit for oil separator system maintenance, Includes ECS F-Connector - Genuine BMW - BMW

A truly complete kit for oil separator system maintenance, Includes ECS F-Connector

Brand:
Genuine BMW - Corporate Logo
ES#:
3621813
Mfg#:
E46M54OSW2KT3
Ships in 1 day
$359.41 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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