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2004 MINI Cooper John Cooper Works MC40 Coupe L4 1.6L

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2004 MINI Cooper John Cooper Works MC40 Coupe L4 1.6L Engine Emission Parts

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Innovate LC-2 Wideband O2 Controller Kit

ES#4809696 - 38770 - Innovate LC-2 Wideband O2 Controller Kit - Includes Lambda cable & 8-foot sensor cable. - Innovate Motorsports - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Includes Lambda cable & 8-foot sensor cable. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Innovate Motorsports - Corporate Logo
ES#:
4809696
Mfg#:
38770
In Stock
$212.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Leak Diagnosis Pump

ES#36217 - 16117158983 - Leak Diagnosis Pump - Located in the rear near the gas tank. - Genuine MINI - MINI

Located in the rear near the gas tank. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with production from 7/2004

Brand:
Genuine MINI - Corporate Logo
ES#:
36217
Mfg#:
16117158983
Ships in 1-2 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.

$445.99

This product was last offered at the strikethrough price on
03-05-2026

$415.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Leak Diagnosis Pump

ES#37269 - 16136801158 - Leak Diagnosis Pump - Located in the rear near the gas tank. - Genuine MINI - MINI

Located in the rear near the gas tank. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with production to 7/2004

Brand:
Genuine MINI - Corporate Logo
ES#:
37269
Mfg#:
16136801158
Ships in 1-2 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.

$445.99

This product was last offered at the strikethrough price on
03-05-2026

$415.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Fuel Tank Breather Valve

ES#2702971 - 13907572086 - Fuel Tank Breather Valve - Located near the side of the engine - Delphi - MINI

Located near the side of the engine affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Delphi - Corporate Logo
ES#:
2702971
Mfg#:
13907572086
In Stock at Vendor
$49.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Vent Hose

ES#4159638 - 11151524087 - Vent Hose - Connects from the intake manifold to the vent valve - URO - MINI

Connects from the intake manifold to the vent valve affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4159638
Mfg#:
11151524087
Ships in 1 Business Day
$32.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor Socket - 22mm

ES#4490396 - 4680-1 - Oxygen Sensor Socket - 22mm - Properly remove stubborn o2 sensors. - Hazet - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Properly remove stubborn o2 sensors. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Hazet - Corporate Logo
ES#:
4490396
Mfg#:
4680-1
Ships in 1 Business Day
$118.99

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

$115.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thin Wall Oxygen Sensor Socket

ES#4001177 - CTA2064 - Thin Wall Oxygen Sensor Socket - Out of space? Use this thin wall socket. - CTA Tools - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Out of space? Use this thin wall socket. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CTA Tools - Corporate Logo
ES#:
4001177
Mfg#:
CTA2064
Back Ordered
Auto Notify
$17.85 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Fuel Tank Breather Valve

ES#4753278 - 13907572086 - Fuel Tank Breather Valve - Located near the side of the engine - Bremmen Parts - MINI

Located near the side of the engine affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4753278
Mfg#:
13907572086
In Stock
ON SALE! SAVE 22%
$25.99

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

$20.39 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crank Case Vent Valve With O-Ring

ES#4335413 - 11127829990 - Crank Case Vent Valve With O-Ring - Mounts to the vent hole on the engine valve cover - SMP - MINI

Mounts to the vent hole on the engine valve cover affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

For vehicles with production to 07/2004

Brand:
SMP - Corporate Logo
ES#:
4335413
Mfg#:
11127829990
In Stock at Vendor
$18.99

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

$17.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hose Line

ES#35381 - 13721491737 - Hose Line - Connects from the intake boot to the valve cover - Genuine MINI - MINI

Connects from the intake boot to the valve cover affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine MINI - Corporate Logo
ES#:
35381
Mfg#:
13721491737
Ships in 1-2 days
$55.95 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor Thread Chaser

ES#4001163 - CTA2068 - Oxygen Sensor Thread Chaser - Remove rust and dirt for easy installation with this tool - CTA Tools - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Remove rust and dirt for easy installation with this tool affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CTA Tools - Corporate Logo
ES#:
4001163
Mfg#:
CTA2068
Ships on Jun 23, 2026
Auto Notify
$11.41 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor Wrench 3/8" drive

ES#2949705 - SLY88750B - Oxygen Sensor Wrench 3/8" drive - O2 Sensor Socket - Schley - Audi Volkswagen Mercedes Benz MINI

O2 Sensor Socket affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Schley - Corporate Logo
ES#:
2949705
Mfg#:
SLY88750B
Ships in 4 Business Days
$59.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Fuel Tank Breather Valve

ES#35625 - 13907572086 - Fuel Tank Breather Valve - Located near the side of the engine - Genuine MINI - MINI

Located near the side of the engine affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine MINI - Corporate Logo
ES#:
35625
Mfg#:
13907572086
Ships in 1-2 days
$111.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Vent Hose

ES#19552 - 11151524087 - Vent Hose - Connects from the intake manifold to the vent valve - Genuine MINI - MINI

Connects from the intake manifold to the vent valve affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine MINI - Corporate Logo
ES#:
19552
Mfg#:
11151524087
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.

$54.65

This product was last offered at the strikethrough price on
06-05-2026

$53.80 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Vacuum Pipe

ES#61863 - 34336761454 - Vacuum Pipe - Located as second line from brake servo - Genuine MINI - MINI

Located as second line from brake servo affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with manual transmissions

Brand:
Genuine MINI - Corporate Logo
ES#:
61863
Mfg#:
34336761454
In Stock
6% off MSRP

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

$32.48

This product was last offered at the strikethrough price on
06-05-2026

$30.62 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crank Case Vent Valve With O-Ring

ES#4039970 - 11127577568 - Crank Case Vent Valve With O-Ring - Mounts to the vent hole on the engine valve cover - URO - MINI

Mounts to the vent hole on the engine valve cover affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4039970
Mfg#:
11127577568
In Stock
$13.99 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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