5150 AutoSport Head Gasket & Head Stud Kit, BMW S54

Seal your BMW S54B32 / S54 engines with the 5150 AutoSport Head Gasket & Head Stud Kit, BMW S54, engineered to hold a reliable seal under high cylinder pressure. Engineered by 5150 AutoSport, this head gasket is built to the standards demanded by high-performance and motorsport BMW builds.

Key Features

• Designed for BMW S54B32 / S54 engines
• Engineered to seal reliably under high cylinder pressure
• A superior solution for forced-induction builds
• Precision-manufactured for consistent fitment
• Designed to outperform factory sealing in high-power applications
• Available in multiple head gasket type - bore - thickness options to suit your build
• Supplied by 5150 AutoSport, trusted by BMW enthusiasts worldwide

Product Details

Cut Ring Head Gasket

The SCE Cut Ring Head Gasket is a direct replacement for BMW part #11127835918, designed for the S54 inline-six engine. Standard OEM and MLS gaskets can only withstand limited cylinder pressure before leaking, making this gasket ideal for applications exceeding 16+ psi.

A failing head gasket can cause overheating, power loss, misfires, or catastrophic engine failure. This gasket is made from high-quality reinforced M0115 material, an asbestos-free, OE-approved composite known for durability. Its AISI 304 stainless steel rings embed into the aluminum head for superior sealing, making it ideal for nitrous or turbo setups exceeding 2 bar boost.

Installation Notes:

• Ensure cylinder head and block surfaces are clean, flat, and debris-free.
• Align the gasket properly on the engine block.
• Install the cylinder head and secure head bolts or studs per manufacturer torque specs.
• Do NOT use additional sealants, as the gasket includes a Viton rubber sealant coating.

MLS Head Gasket

The Cometic MLS Head Gasket replaces BMW part #11127835918 for S54 engines in E46 M3, E36/7 Z3 M, Z4 M Coupe/Roadster, and E46 M3 CSL. It is a high-performance alternative for supercharged and turbocharged builds.

S54 engines have an 87mm bore and a stock gasket thickness of 0.027 inches. MLS gaskets provide superior sealing, resist shearing forces, and reduce bore distortion. Constructed from multiple stainless-steel layers, they are corrosion-resistant and can withstand extreme heat and pressure.

Don't see the head gasket you're looking for? More bore and thickness variations available here.

Important Compatibility Note: MLS gaskets cannot be used on engines with O-rings or receiver grooves, as they require a smooth, flat sealing surface.

Installation Notes:

• Ensure mating surfaces are clean, flat, and free of oil or debris.
• Align the gasket correctly on the block.
• Install the head and torque bolts/studs per manufacturer specifications.
• Do NOT use additional sealants, as the gasket features a Viton rubber sealant.

ARP Head Stud Kit (201-4303)

The ARP 201-4303 head stud kit is a direct replacement for BMW part #11127831862, designed for the S54 inline-six in E46 M3, Z3 M Roadster, Z4 M Coupe/Roadster, and E46 M3 CSL.

Upgrading to ARP head studs increases clamping force and improves head gasket sealing, reducing the risk of failure—especially in high-performance, supercharged, or turbocharged applications.

Strength Options:

• ARP2000 Kit – 220,000 PSI tensile strength (suitable for most high-performance builds).
• Custom Age 625+ Kit – 280,000 PSI tensile strength (ideal for extreme boost applications).

Head Stud Kit 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.

PRELOAD (TORQUE) RECOMMENDATIONS

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

ARP2000

Step 1: Tighten to 35 ft-lbs.

Step 2: Tighten to 70 ft-lbs.

Step 3: Tighten to 105 ft-lbs.

Custom Age 625+

Step 1: Tighten to 35 ft-lbs.

Step 2: Tighten to 70 ft-lbs.

Step 3: Tighten to 100 ft-lbs.

with ARP Ultra-Torque fastener assembly lubricant

Bolt Torque Sequence

BMW S54 Applications:

BMW 3 Series

2000-2006 E46 M3

BMW Z3 Series

2001-2002 Z3 M

BMW Z4 Series

2006-2008 Z4 M

Head Gasket Type - Bore - Thickness Options

• Cut Ring - 87.5 mm - 0.048"
• MLS - 87.5 mm - 0.030"
• MLS - 87.5mm - 0.040"

Compatibility

BMW S54 Models

• BMW E46 M3
• BMW Z3 M Roadster / Coupe
• BMW Z4 M Roadster / Coupe

Why Choose 5150 AutoSport?

• Purpose-built BMW performance engineering
• Components developed for high-power, real-world durability
• Trusted by serious BMW engine builders
• Specialist knowledge of forced-induction and high-RPM builds

Why Buy from R44 Performance?

R44 Performance supplies premium BMW performance and engine-building components trusted by enthusiasts worldwide.

• BMW specialists
• Genuine 5150 AutoSport products
• Fast UK & worldwide shipping
• Expert product support

Upgrade your BMW S54B32 / S54 build with the 5150 AutoSport Head Gasket & Head Stud Kit, BMW S54 — available now from R44 Performance.

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.

All in stock products ship the same day if ordered before 2pm GMT

For out of stock items we will contact you with an estimated wait time if not otherwise specified above.

We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy

All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.