5150 AutoSport Factory+ Rebuild Kit, BMW S38

You love your naturally aspirated BMW. You know you could add more power with a turbo conversion, but you already love the way it sounds, feels, and drives. Many customers aren't interested in the extra wear and tear of forced induction, power lags, or a crowded engine bay.

For the classic BMW S38 enthusiast interested in rebuilding their engine with bulletproof internals, we’re introducing the 5150 Factory+ Kit. A carefully curated, budget-friendly option for those looking to rebuild their Naturally Aspirated engine for years of reliable performance and spirited driving.

This kit includes everything you need to refresh and bulletproof your rotating assembly, and features the best components on the market for modest NA upgrades:

• ARP2000 Head Stud Kit
• Cometic Multi-Layer Steel Head Gasket
• CP-Carrillo Forged Piston Set
• SP Components Connecting Rod Set
  • ARP Connecting Rod Bolts
• ARP Main Stud Kit 

Ideal for both resto-modders interested in extending the life of their engine and road racers who push their NA motors to the upper limits on track.

Please note: All engine modifications should be performed by a qualified professional to ensure a proper and safe installation process and a reliable, optimally performing engine.

BMW S38B35 Applications:

BMW 5 Series

1985-1987     E28     M5 [European Market]
1987-1988     E28     M5 [American Market]

BMW 6 Series

1984-1989     E24     M635CSi [European Market]
1987-1989     E24     M6 [American Market]

BMW S38B36 Applications:

BMW 5 Series

1988-1992     E34     M5

BMW S38B38 Applications:

BMW 5 Series

1992-1995     E34     M5 [European Market]