5150 AutoSport
5150 AutoSport Head Gasket & Head Stud Kit, BMW S14
5150 AutoSport Head Gasket & Head Stud Kit, BMW S14
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5150 AutoSport Head Gasket & Head Stud Kit for BMW S14
This kit is designed for BMW S14B20, S14B23, S14B25, and S14B27 engines found in the E30 M3. It includes a high-performance head gasket and an ARP head stud kit to ensure superior sealing and reliability under extreme conditions.
MLS Head Gasket
A direct replacement for BMW part #11121316714, this Cometic MLS (Multi-Layer Steel) head gasket is ideal for both OEM rebuilds and performance applications, including turbocharged engines.
- Maximum sealing without additional sealants
- Resistance to shearing forces and bore distortion
- Superior durability with corrosion-resistant stainless steel layers
Note: MLS gaskets require smooth, flat surfaces and are not compatible with O-ringed blocks.
Athena Cut-Ring Head Gasket
Recommended for engines exceeding 16+ psi of boost, this gasket features AISI 304 stainless steel rings that bite into the aluminum head for unmatched sealing, even in nitrous or high-boost applications above 2 bar. Constructed from premium asbestos-free M0115 material, it ensures:
- Maximum sealing for high-compression and forced induction setups
- Reduced risk of power loss, misfires, and overheating
- Compatibility with piston sizes 0.5mmâ1mm larger than the gasket bore
Installation Note: Ensure all mating surfaces are clean and resurfaced before installation.
ARP Head Stud Kit
The ARP #201-4605 head stud kit enhances engine durability and head gasket reliability by providing superior clamping force. Ideal for high-performance and racing builds, this kit helps prevent head lift under extreme conditions.
Installation Tips:
- Clean and prepare all threads before installation
- Hand-tighten studs into the block
- Use ARP Ultra-Torque Lubricant for consistent clamping force
- Follow proper torque sequence and re-torque after initial engine heat cycle
7 | 3 | 1 | 5 |
9 |
10 | 6 | 2 | 4 | 8 |
BMW S14 Applications:
BMW S14B20
1989-1991 Â Â Â E30 Â Â 320is [Portugal and Italy]
BMW S14B23
1986-1991 Â Â Â E30 Â Â M3
1986-1987 Â Â Â E30 Â Â M3 Evo I
1988 Â Â Â E30 Â Â M3 Evo II
BMW S14B25
1990 Â Â Â E30 Â Â M3 Sport Evo (Evo III)
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