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2021 MINI Cooper S 3 Door B46C

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2021 MINI Cooper S 3 Door B46C Performance Cylinder Heads

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Performance Valve Springs Kit - Set Of 12

Aftermarket performance intake and exhaust valve springs for your high revving B36/B38 engine affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supertech - Corporate Logo
ES#:
4733440
Mfg#:
SPRK-MCB38
Ships in 8 Business Days
$541.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Supertech Intake Valve Guide - Priced Each 10.045 (+0.015) Plus Sized

Uprated valve guides used in the cylinder head : Manganese Bronze Metal affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supertech - Corporate Logo
ES#:
4733444
Mfg#:
GDE-BMB48-I
Ships in 8 Business Days
$10.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ARP Main Stud Kit

High strength ARP main stud kit for the B48 engines affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
ARP - Corporate Logo
ES#:
5396064
Mfg#:
201-5404
Ships on Jun 22, 2026
$152.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Cylinder Heads

Engines are just air pumps. How efficiently they can pump and how much they can pump determines how powerful they are. Upgrade cylinder head components to improve your engine's performance, like valves, valve springs, camshafts, rocker arms, and entire cylinder heads to unlock more power from your engine.

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Manufacturer names and/or part numbers are used only for identification purposes.

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