• ARP Head Stud Kit for BMW M42 and M44 Engines
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ARP Automotive Racing Products

ARP Head Stud Kit, BMW M42/M44

ARP Head Stud Kit, BMW M42/M44

$219.99 USD
$219.99 USD $219.99 USD
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Upgrade your BMW M40 / M42 engine with the ARP Head Stud Kit, designed specifically for E36 and Z chassis. 

ARP hardware provides increased clamping force, improved head gasket sealing, and enhanced overall engine strength thanks to their use of advanced materials and manufacturing techniques. 

ARP2000 is a high-strength alloy steel material engineered to endure extreme loads and stresses of high performance engines, offering a tensile strength of 190 ksi. For high boost, high pressure forced induction applications, ARP Custom Age 625+ bolts offer an impressive 260 ksi tensile strength. All ARP bolts, studs, and nuts are engineered to endure the extreme loads and stresses that are native to high performance engines.

Please note: After initial assembly, it is necessary to allow the engine to complete a full heat cycle, then re-torque your head studs to spec. This means allowing the engine to warm up to its normal operating temperature, remain at operating temperature for several minutes to ensure each component is uniformly heated, then turned off and cooled completely to ambient temperature.

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 25 ft-lbs.
Step 2: Tighten to 50 ft-lbs.
Step 3: Tighten to 75 ft-lbs.

Custom Age 625+
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

7 3 1 5
 9
10 6 2 4 8

 

BMW M42 Applications:

3 Series

1989-1991     E30     318i / 318is
1992-1996     E36     318i / 318is

BMW M44 Applications:

3 Series

1996-1999     E36     318i / 318is

Z Series

1996-1999     E36/7     Z3 1.9i

ARP-HSK-M42

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