Whenever the head is coming off, your
switching to forced induction, or if you are simply prepping to
drive your car hard; we highly recommend switching to far superior
These Head Stud Kits greatly improve reliability; helping to
eliminate movement of the of the cylinder head and intern, 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. Though more expensive than
OEM, converting to one of our head studs kits will not only give
added strength and reliability when its needed most, but provides
the most accurate torque readings because 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, a blessing if your head
may have to be removed more than once. Especially in the time
crunch of racing, when engines are dissembled frequently, studs
make removing and installing the cylinder head on to 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. It is similar to
converting your wheel-bolts to wheel-studs.
ARP is the world leader in fastener
technology. Makers of the finest fasteners in the market,
especially for BMW engines, ARP is the choice when you want the
highest reliability possible. If you are looking for high
performance from you BMW engine, than 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.
Raceware Fasteners for BMW applications
offer excellent performance and quality for each BMW application.
They exceed all OEM specs and are a non-stretch type making them
ideal for serious performance and a race ready BMWs. When your
looking for ultimate reliability, depend on Raceware.
ARP M50 HSK part # 201.4603 are available at much reduced price
and are suitable for NA (normally aspirated) cars
Q: ARP 2000, L19, Stretch Hardware?... what's important
that I should know?
There are only two instances on BMW where this is all important;
the M50 family engine including M50, M52 S50us and S52us. The
second is the S54
From Andreas Krammer of Sankt Martin im Mühlkreis, Austria on 4/7/2013.
From Roger of Laksevåg, Norway on 2/20/2012.
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