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BMW E90 335i N55 3.0L Performance Cylinder Heads

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ARP Head Stud Kit, BMW N55/S55 - Custom Age 625+

ES#4736733 - ARP-HSK-S56-CA - ARP Head Stud Kit, BMW N55/S55 - Custom Age 625+ - Upgrade to 5150's Custom Age 625+ Head Stud Kit Built by ARP! - 5150 Autosport - BMW

Upgrade to 5150's Custom Age 625+ Head Stud Kit Built by ARP! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
5150 Autosport - Corporate Logo
ES#:
4736733
Mfg#:
ARP-HSK-S56-CA
Ships in 3 Business Days
$999.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ARP2000 Head Stud Kit - N55

ES#4920389 - ARP-HSK-N55-S - ARP2000 Head Stud Kit - N55 - Ditch the Stock Head Bolts for a Set of Head Studs from ARP! - ARP - BMW

Ditch the Stock Head Bolts for a Set of Head Studs from ARP! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
ARP - Corporate Logo
ES#:
4920389
Mfg#:
ARP-HSK-N55-S
In Stock
$699.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Head Stud Set Brushed For BMW N55 Engine

ES#4920574 - P102061410.BR - Head Stud Set Brushed For BMW N55 Engine - Wagner Tuning - BMW

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

Brand:
Wagner Tuning - Corporate Logo
ES#:
4920574
Mfg#:
P102061410.BR
Ships on Jul 24, 2026
Auto Notify
$449.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ARP Head Stud Kit BMW S55 Custom Age 625+

ES#4908308 - ARP-HSK-S55-CA - ARP Head Stud Kit BMW S55 Custom Age 625+ - Secure your engine with race-proven durability using the ARP Head Stud Kit the top choice for serious BMW performance enthusiasts and professional builders alike. - 5150 Autosport - BMW

Secure your engine with race-proven durability using the ARP Head Stud Kit the top choice for serious BMW performance enthusiasts and professional builders alike. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
N55 Engines it is a MUST to drill and tap!
N55 Engines it is a MUST to drill and tap!

Brand:
5150 Autosport - Corporate Logo
ES#:
4908308
Mfg#:
ARP-HSK-S55-CA
Back Ordered
$899.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

BMW N55/S55 Valves By Super Tech

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

Brand:
5150 Autosport - Corporate Logo
ES#:
4900024
Mfg#:
SUP-HPVK-S55-32/
Ships in 3 Business Days
$1143.99 USD
Free Shipping
on orders $49 and up

5mm Single Groove Valve Keeper - Set Of 24

ES#4716125 - KPR-5.0-7S-24 - 5mm Single Groove Valve Keeper - Set Of 24 - Two required per valve, necessary for use with certain supertech valves - Supertech - BMW

Two required per valve, necessary for use with certain supertech valves affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supertech - Corporate Logo
ES#:
4716125
Mfg#:
KPR-5.0-7S-24
In Stock
$72.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Supertech Titanium Valve Retainers - Intake - Set Of 12

ES#4716135 - RET-BMN54-TI-12 - Supertech Titanium Valve Retainers - Intake - Set Of 12 - Quality retainers from Supertech - Supertech - BMW

Quality retainers from Supertech affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supertech - Corporate Logo
ES#:
4716135
Mfg#:
RET-BMN54-TI-12
Ships in 6 Business Days
$197.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Supertech Titanium Valve Retainers - Exhaust - Set Of 12

ES#4716136 - RET-BMN54-TE-12 - Supertech Titanium Valve Retainers - Exhaust - Set Of 12 - Quality retainers from Supertech - Supertech - BMW

Quality retainers from Supertech affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supertech - Corporate Logo
ES#:
4716136
Mfg#:
RET-BMN54-TE-12
Ships in 7 Business Days
$197.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

N54/N55 Single turbo head flange - Mild steel

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

Brand:
Vargas Turbo Technologies - Corporate Logo
ES#:
3438085
Mfg#:
VTT-FLNG-1
Ships in 10 Business Days
$393.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Supertech Titanium Valve Retainers - Intake - Sold Each

ES#4716130 - RET-BMN54-TI - Supertech Titanium Valve Retainers - Intake - Sold Each - Quality retainers from Supertech - Supertech - BMW

Quality retainers from Supertech affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supertech - Corporate Logo
ES#:
4716130
Mfg#:
RET-BMN54-TI
Ships in 8 Business Days
$16.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

5mm Single Groove Valve Keeper - Priced Each

ES#4716123 - KPR-5.0-7S - 5mm Single Groove Valve Keeper - Priced Each - Two required per valve, necessary for use with certain supertech valves - Supertech - BMW

Two required per valve, necessary for use with certain supertech valves affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supertech - Corporate Logo
ES#:
4716123
Mfg#:
KPR-5.0-7S
Back Ordered
Auto Notify
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ASA Stud Bolt - Pack Of 10

ES#2574760 - 11127521167kt - ASA Stud Bolt - Pack Of 10 - M7X68MM - Genuine BMW - BMW

M7X68MM affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2574760
Mfg#:
11127521167KT
Ships in 1 day
$29.99

This product was last offered at the strikethrough price on
03-11-2026

$23.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Supertech Titanium Valve Retainers - Exhaust - Sold Each

ES#4716129 - RET-BMN54-TE - Supertech Titanium Valve Retainers - Exhaust - Sold Each - Quality retainers from Supertech - Supertech - BMW

Quality retainers from Supertech affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supertech - Corporate Logo
ES#:
4716129
Mfg#:
RET-BMN54-TE
Ships in 8 Business Days
$16.99 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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