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2003 MINI Cooper S Coupe L4 1.6L

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2003 MINI Cooper S Coupe L4 1.6L Performance Engine Parts

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Forged Piston (Set of 4) - 77.5mm P4-MIN53-77.5-N1-4

ES#3477973 - P4-MIN53-775-N1 - Forged Piston (Set of 4) - 77.5mm P4-MIN53-77.5-N1-4 - Performance pistons in +0.50 size - Supertech - MINI

Performance pistons in +0.50 size affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supertech - Corporate Logo
ES#:
3477973
Mfg#:
P4-MIN53-775-N1
Ships in 8 Business Days
$807.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Mid Pipe R53/R52 Cooper S/JCW - Resonated

ES#3579403 - MSM311 - Mid Pipe R53/R52 Cooper S/JCW - Resonated - Replacement mid pipe - Milltek Sport - MINI

Replacement mid pipe affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Milltek Sport - Corporate Logo
ES#:
3579403
Mfg#:
MSM311
Ships in 9 Business Days
$399.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Engine Main Bearing Kit Silicone Bi Metal - (+0.25) Size

ES#3524592 - MB5667SI0.25 - Engine Main Bearing Kit Silicone Bi Metal - (+0.25) Size - Performance engine bearing kit - King - MINI

Performance engine bearing kit affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
King - Corporate Logo
ES#:
3524592
Mfg#:
MB5667SI0.25
In Stock at Vendor
$134.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Valve Springs Kit - Single Groove SPRK-TS1015-MC2

ES#3477676 - SPRK-TS1015/MC-2 - Performance Valve Springs Kit - Single Groove SPRK-TS1015-MC2 - Aftermarket performance intake and exhaust valve springs for your high revving engine - Supertech - MINI

Aftermarket performance intake and exhaust valve springs for your high revving engine affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supertech - Corporate Logo
ES#:
3477676
Mfg#:
SPRK-TS1015/MC-2
Ships in 8 Business Days
$789.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

3.5" Black Chrome Swivel Exhaust Tips - Set of 2

ES#4901433 - 049478LA03-02KT - 3.5" Black Chrome Swivel Exhaust Tips - Set of 2 - Universal exhaust tips with a swivel adjustability to fine tune your exhaust. 2.5" Inlet & a 3.5" Double Wall, Angle Cut Outlet - Turner Motorsport - BMW MINI

Universal exhaust tips with a swivel adjustability to fine tune your exhaust. 2.5" Inlet & a 3.5" Double Wall, Angle Cut Outlet affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Turner Motorsport - Corporate Logo
ES#:
4901433
Mfg#:
049478LA03-02KT
In Stock
ON SALE!
$136.99

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

$129.31 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

High Flow Water Methanol Check Valve

ES#3988118 - Sn0-8cv-qc - High Flow Water Methanol Check Valve - Custom made with 100% methanol resistant stainless steel spring and EPDM seals ensuring zero corrosion even with high concentrations of methanol. - SnowPerformance - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Custom made with 100% methanol resistant stainless steel spring and EPDM seals ensuring zero corrosion even with high concentrations of methanol. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
3988118
Mfg#:
SN0-8CV-QC
In Stock
$31.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Universal Oil Cooler Black - 10 Row

ES#2764962 - MM0C10BK - Universal Oil Cooler Black - 10 Row - Serious engine oil cooling for the most demanding engines - Mishimoto - Audi BMW Volkswagen MINI

Serious engine oil cooling for the most demanding engines affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mishimoto - Corporate Logo
ES#:
2764962
Mfg#:
MM0C10BK
In Stock
$126.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Stage 3 Boost Cooler (EFI - Port Injection) - Nylon Line

ES#4144931 - SN0-310 - Stage 3 Boost Cooler (EFI - Port Injection) - Nylon Line - Brings true 2D mapped water-methanol injection delivery to your EFI (Electronic Fuel Injected) and forced induction vehicle - SnowPerformance - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Brings true 2D mapped water-methanol injection delivery to your EFI (Electronic Fuel Injected) and forced induction vehicle affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
4144931
Mfg#:
SN0-310
In Stock at Vendor
$729.99 USD
Free Shipping
on orders $49 and up

Turner Motorsport Double Wall Slash Cut Exhaust Tip - 3.0 Inlet - 3.5 OD - Stepped Left - Mirror

ES#4146842 - 026732TMS02-16 - Turner Motorsport Double Wall Slash Cut Exhaust Tip - 3.0 Inlet - 3.5 OD - Stepped Left - Mirror - Left - Mirror Slash Cut Exhaust Tip - 3.0 Inlet - 3.5 OD - Turner Motorsport - BMW MINI

Left - Mirror Slash Cut Exhaust Tip - 3.0 Inlet - 3.5 OD affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Not vehicle specific. You MUST measure prior to purchasing!

Brand:
Turner Motorsport - Corporate Logo
ES#:
4146842
Mfg#:
026732TMS02-16
Ships on Oct 29, 2026
Auto Notify
ON SALE! SAVE 32%
$130.99

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

$89.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

BMS Billet Water/Methanol Injection Tank Cap With Safety Check Valve

ES#4714530 - BMSWMITC - BMS Billet Water/Methanol Injection Tank Cap With Safety Check Valve - The Burger Motorsports custom billet Water/Methanol Injection (WMI) cap includes an integrated heavy-duty check valve to let much-needed air in and prevent dangerous WMI vapor/fumes and liquid from getting out! - Burger Motorsports - Audi BMW Volkswagen Mercedes Benz MINI Porsche

The Burger Motorsports custom billet Water/Methanol Injection (WMI) cap includes an integrated heavy-duty check valve to let much-needed air in and prevent dangerous WMI vapor/fumes and liquid from getting out! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Burger Motorsports - Corporate Logo
ES#:
4714530
Mfg#:
BMSWMITC
In Stock
$59.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

M7 Speed 16% Supercharger Technology Pulley

ES#3088921 - 53-3M7102 - M7 Speed 16% Supercharger Technology Pulley - Upgraded design for the Classic M7 SC Pulley - M7 Speed - MINI

Upgraded design for the Classic M7 SC Pulley affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
M7 Speed - Corporate Logo
ES#:
3088921
Mfg#:
53-3M7102
In Stock
$140.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Valve Springs Kit - Triple Groove SPRk-TS1015-mc

ES#3173700 - SPR-TS1015-MC - Performance Valve Springs Kit - Triple Groove SPRk-TS1015-mc - Aftermarket performance intake and exhaust valve springs for your high revving engine - Supertech - MINI

Aftermarket performance intake and exhaust valve springs for your high revving engine affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supertech - Corporate Logo
ES#:
3173700
Mfg#:
SPR-TS1015-MC
Ships in 8 Business Days
$701.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Boost Cooler Stage 2.5 Progressive Water/Methanol Injection Kit - no tank

Unlock 50-70 HP on your boosted vehicle while decreasing your air temps by up to 100 degrees! Stainless Steel Braided Line, 4AN Fittings, no tank included! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
4608739
Mfg#:
SN0-210-BRD-T
In Stock at Vendor
$687.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Engine Parts

Our name says it all. That's why ECS Tuning is dedicated to providing our customers with the broadest possible assortment of engine tuning options at a range of prices and options to fit any budget. Start small and grow your car into something special with performance engine upgrades from a company that has tuning in its name and its blood.

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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