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5150 AutoSport

5150 AutoSport Head Gasket & Head Stud Kit, BMW M10

5150 AutoSport Head Gasket & Head Stud Kit, BMW M10

Regular price $410.98 USD
Regular price Sale price $410.98 USD
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Head Gasket Type - Bore - Thickness
Head Stud Kit

MLS Head Gasket:

This Cometic MLS Head Gasket is specifically engineered for the BMW M10B18 and M10B20 engines. Multi-Layer Steel also known as "MLS" head gaskets are preferred as an aftermarket alternative for high-performance BMW engines, including supercharged and turbocharged models, as they offer better performance than factory gaskets.

The M10 factory head gasket specifications are 89mm Bore with a thickness of 0.060 inches.

MLS Gaskets provide maximum sealing performance for high-output engines, without the need for sealants. These gaskets resist shearing forces and reduce bore distortion with their embossing design.

Comprised of multiple layers of stainless steel, they are durable and corrosion-resistant. Ideal for high-performance engines, MLS head gaskets offer superior sealing and can withstand high levels of heat and pressure.

When choosing an MLS gasket for your BMW, ensure compatibility, thickness, and bore size, and follow installation and torque specifications to avoid engine damage.

MLS head gaskets can NOT be used with motors that have O-rings or receiver grooves around the cylinder bores because they require smooth and flat surfaces to seal.

MLS Installation Instructions:

  1. Make sure that the engine block and cylinder head surfaces are clean, flat, and free from any debris, oil, or coolant.

  2. Install the MLS gasket on the engine block and ensure that it is properly aligned. Avoid twisting or bending the gasket during installation.

  3. Place the cylinder head on top of the gasket and install the head bolts or studs in their correct positions.

  4. Follow the manufacturer's recommended torque specifications and tighten the bolts or studs in the proper sequence to ensure even clamping force across the gasket.

  5. After the initial tightening, re-torque the head bolts or studs after the engine has been started and then allowed to cool to room temperature. This will ensure that the gasket is properly seated and compressed.

  6. It is recommended to not use any additional sealant on the MLS gasket, as it is already coated with a Viton rubber sealant. Using additional sealant can hinder the performance of the gasket.

Head Stud Kit

The ARP head stud kit for the BMW M10 B18 and B20 engine (1.5L & 2.0L) 4-cylinder, is designed to provide improved clamping force for the cylinder head to the engine block. The kit includes high-strength, heat-treated studs, premium-grade parallel ground washers, and 12-point nuts.

The ARP head studs 201-4601 are made from premium-grade 8740 chromoly steel, which is stronger and more durable than the factory bolts. The studs are heat-treated to 200,000 psi tensile strength and precision-machined to ensure consistent, accurate torque values.

The parallel ground washers included in the kit are designed to distribute the clamping load evenly across the cylinder head, reducing the risk of head gasket failure. The 12-point nuts feature a hardened, parallel-ground washer face and a precision thread-rolling process for consistent, accurate torque values.

Overall, the ARP head stud kit for the BMW M10 engine is designed to provide improved clamping force and reliability for high-performance and racing applications.

Installation Instructions: 

1. To ensure proper thread engagement and accurate torque readings, clean ALL threads in the block. Chase if necessary with ARP Thread Chaser.
2. Clean and inspect all hardware prior to installation. Look for obvious defects or shipping damages, plus proper fit, length and dimension.
3. If the cylinder head studs protrude into a water jacket, lubricate the block threads of the studs with ARP THREAD SEALER.
4. Screw studs into the block “HAND TIGHT ONLY”.
5. Install the cylinder head(s) and check for binding or misalignment.
6. Lubricate the stud threads, nuts and washers with ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT.
Then install the washers and the nuts onto the studs and tighten them hand tight.
ARP recommends using the ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT that is provided with each kit as opposed to motor oil. This is due to higher friction on the studs as well as inconsistencies in the clamping force of the fasteners when motor oil or other low quality lubricants are used.


7. Following the manufacturers recommended torque sequence tighten the nuts steps 1-3

Step 1: Tighten to 30 ft-lbs.
Step 2: Tighten to 60 ft-lbs.
Step 3: Tighten to 90 ft-lbs.

with ARP Ultra-Torque fastener assembly lubricant

Bolt Torque Sequence

  10    4  2 6 8
    7    5 1 3 9


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