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BMW E46 M3 S54 3.2L

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BMW E46 M3 S54 3.2L Engine Emission Parts

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Rear Manifold Oxygen Sensor - Front Position/Pre-Cat

ES#27143 - 11781405324 - Rear Manifold Oxygen Sensor - Front Position/Pre-Cat - Located in the front position of the exhaust manifold for cylinders 4-6 on the S54 engine - Genuine BMW - BMW

Located in the front position of the exhaust manifold for cylinders 4-6 on the S54 engine

Brand:
Genuine BMW - Corporate Logo
ES#:
27143
Mfg#:
11781405324
In Stock
Limited Qty Sale
$398.99

This product was last offered at the strikethrough price on
08-07-2026

$361.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

EGR Valve Gasket

ES#261011 - 11727505259 - EGR Valve Gasket - Seals valve to the exhaust pipe - Victor Reinz - BMW

Seals valve to the exhaust pipe

Brand:
Victor Reinz - Corporate Logo
ES#:
261011
Mfg#:
11727505259
In Stock
$6.11 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

S54 Silicone Crankcase Vent Hose Repair Kit

ES#4504787 - 018562LA01 - S54 Silicone Crankcase Vent Hose Repair Kit - Replace the brittle or broken line that attaches between the oil separator and air box. The Turner Silicone Crankcase Hose can be used in place of both the standard and CSL intake manifolds. - Turner Motorsport - BMW

Replace the brittle or broken line that attaches between the oil separator and air box. The Turner Silicone Crankcase Hose can be used in place of both the standard and CSL intake manifolds. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Turner Motorsport - Corporate Logo
ES#:
4504787
Mfg#:
018562LA01
In Stock
ON SALE! SAVE 25%
$41.99

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

$31.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Dipstick Guide Tube

ES#24274 - 11437832140 - Oil Dipstick Guide Tube - The guide tube for the dipstick - Genuine BMW - BMW

The guide tube for the dipstick

Brand:
Genuine BMW - Corporate Logo
ES#:
24274
Mfg#:
11437832140
Back Ordered
4% off MSRP

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

$163.99

This product was last offered at the strikethrough price on
10-11-2026

$156.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oil Separator Return Pipe

ES#19657 - 11157832781 - Oil Separator Return Pipe - Return pipe for the oil separator system - Genuine BMW - BMW

Return pipe for the oil separator system

Brand:
Genuine BMW - Corporate Logo
ES#:
19657
Mfg#:
11157832781
Ships in 1-2 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.

$314.99

This product was last offered at the strikethrough price on
10-11-2026

$307.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

E46 Secondary Air Pump

ES#2574722 - 11727837138 - E46 Secondary Air Pump - Common source of emissons related issues - Pierburg - BMW

Common source of emissons related issues

Brand:
Pierburg - Corporate Logo
ES#:
2574722
Mfg#:
11727837138
Special Order: No Guaranteed ETA
$298.99 USD
Free Shipping
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

E46 Vent Hose

ES#25886 - 11617831336 - E46 Vent Hose - Connects the intake to the vent pipe that connects to the dipstick hose - Genuine BMW - BMW

Connects the intake to the vent pipe that connects to the dipstick hose

Brand:
Genuine BMW - Corporate Logo
ES#:
25886
Mfg#:
11617831336
Ships in 1-2 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.

$47.99

This product was last offered at the strikethrough price on
10-11-2026

$46.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Vapor Canister Grommet

ES#3521464 - 16131183912 - Vapor Canister Grommet - Used in the charcoal canister connection - URO - BMW MINI

Used in the charcoal canister connection 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
3521464
Mfg#:
16131183912
In Stock
$5.83 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E46 M3 Pressure hose assembly

ES#26855 - 11727831039 - E46 M3 Pressure hose assembly - Hose that connects to the air pump in your exhaust manifold - Genuine BMW - BMW

Hose that connects to the air pump in your exhaust manifold

Brand:
Genuine BMW - Corporate Logo
ES#:
26855
Mfg#:
11727831039
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.

$41.99

This product was last offered at the strikethrough price on
10-11-2026

$40.99 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

E46 M3 Vent Hose

ES#25951 - 11617839061 - E46 M3 Vent Hose - Connects the dipstick tube to the intake vent hose - Genuine BMW - BMW

Connects the dipstick tube to the intake vent hose

Brand:
Genuine BMW - Corporate Logo
ES#:
25951
Mfg#:
11617839061
Back Ordered
2% off MSRP

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

$230.99

This product was last offered at the strikethrough price on
10-11-2026

$225.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankcase Vent Hose

ES#4818520 - 11157831311 - Crankcase Vent Hose - Runs from oil separator to the intake manifold - Bremmen Parts - BMW

Runs from oil separator to the intake manifold 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818520
Mfg#:
11157831311
In Stock
ON SALE! SAVE 21%
$30.99

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

$24.47 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

E46 M3 Air Pump And Coolant Reservoir Bracket

ES#37985 - 17112229108 - E46 M3 Air Pump And Coolant Reservoir Bracket - Located on the passenger side of engine bay - Genuine BMW - BMW

Located on the passenger side of engine bay

Brand:
Genuine BMW - Corporate Logo
ES#:
37985
Mfg#:
17112229108
Ships in 4 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.

$212.99

This product was last offered at the strikethrough price on
10-11-2026

$207.99 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

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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