ARP2000 offers improved strength over standard head stud material, making it ideal for forced induction and racing use: This is our preferred M50-family head stud.
L19 head studs for the S54 are used on our high HP builds where more than 600 WHP will be used. These are recommended for our custom and high-HP FI customers
Custom Age 625+ is a newly formulated super-alloy. It demonstrates superior fatigue cycle life, tensile strength, and toughness as well as complete resistance to atmospheric corrosion and oxidation.
Aluminum Block Engines use Raceware Head Stud Kits and must be time-serted for proper installation. Inquire about our Time-Sert kit or our in house proprietary time-serting service.
Whenever your cylinder head is coming off, you're switching to forced induction, or if you are simply preparing to drive your car hard, you will need to replace your OEM hardware; we highly recommend switching to ARP Head Studs for far superior race-grade hardware.
ARP's Head Stud Kits greatly improve reliability by helping to eliminate movement of the cylinder head and the gasket failure caused by inferior OEM head-bolt stretch.
This is the #1 cause of premature head gasket failure, especially on boosted or high output engines. Converting to ARP head studs will not only give added strength and reliability when it's needed most, but also provide the most accurate torque readings because these studs don't "twist" into the block; all clamping forces are on one axis, and there is less force exerted on the normally stressed threads of the block. This increases block and hardware life and typically makes the head easier to properly install to the block.
Especially in the time crunch of racing, when engines are disassembled frequently, studs make removing and installing the cylinder head onto the block a much easier task. By allowing the studs to act as a guide on to the head, your head slides on and off and also ensures proper alignment of the head and gasket for the same reason.
ARP is the world leader in fastener technology. Makers of the finest fasteners in the market, especially for BMW engines, ARP is the brand you can count on when you want the highest reliability possible. If you are looking for high performance from your BMW engine, then ARP Head Stud Kits are a must. All kits come complete with hardened parallel-ground washers and aerospace-quality nuts. Most popular is the full shank ARP 2000 M50-Family Head Stud for high horsepower engines.
- Protects the threads in your engine block.
- Trusted around the world by top race teams
- A must for turbo or supercharged applications
Note: All OE BMW Head stud hardware is stretch type, meaning that once used; it should be discarded as it is no longer capable of doing its job.