ARP CA625+ Head Studs ARP2000 Main Studs SCE Vulcan Head Gasket GR Supra A90 20+ B58B30 84mm 1.0mm

ARP Head Stud Kit 12pt CA625+ For Supra A90 20+ Toyota 3.0L B58B30M1 B58B30O1 203-4706

Head studs hold your head and block together. As you make more power than your engine was designed to hold from the factory, the head and the block push apart from each other, stretching the factory bolts, and causing various failures. ARP Head Studs are stronger than the factory fasteners, and are designed to keep your race engine together under any circumstance.

WHAT IS CUSTOM AGE 625+?
You may have heard of the popular L19 upgrade for Head studs, Main Studs, Rod Bolts, etc. The L19 material is stronger than the ARP 8740 or even ARP 2000 materials, however L19 is difficult to work with. You cannot touch L19 with your bare hands or the oils from your fingers will corrode the studs. CA625+ material is just as strong, offering an increase in clamping force, without the difficult-to-deal-with issues that L19 has. These CA625+ studs will allow you to run even more boost without the head lifting, and will ensure the longevity of your engine even more. If you are looking for the best way to do it, this is the way to go.

Factory fasteners were not designed for performance use. The material chosen by the Original Engine Manufacturer for your engine's factory fasteners was chosen to meet the criteria of a normally driven consumer vehicle at the provided stock horsepower and rev limit. The material is not optimum for a high reving, high heat, high power, race car.

The factory fasteners were also not designed to be reused. Every time you torque a fastener, it stretches to perform the proper clamping force. If the fasteners stretch too far, they will not longer provide the required clamping force, and can lead to an engine failure. When you take your factory engine apart to build it into your race engine, discard your used factory main bolts and switch to a brand new set of ARP Head Studs to provide your engine with the proper clamping force required to keep all of your parts together in the harshest race environment.

We have seen heads lift and blow head gaskets, pressurize the cooling system, and worse. ARP Head Studs are a very inexpensive part that couldn't be more important to your engine build. Consider them a must.

ARP Main Stud Kit 12pt ARP2000 For Supra A90 20+ Toyota 3.0L B58B30M1 203-5409

ARP Main Studs are manufactured from proprietary ARP2000 alloy, heat treated in-house to 220,000 psi tensile strength, and precision J-form threads rolled after heat-treat to create a fastener that has threads 1000% stronger than others!

There are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block.

Main studs hold your crankshaft in place. As you make more power, and rev higher than your engine was designed to rev from the factory in stock trim, you start to push the limits of the factory fasteners.

Factory fasteners were not designed for performance use. The material chosen by the Original Engine Manufacturer for your engine's factory fasteners was chosen to meet the criteria of a normally driven consumer vehicle at the provided stock horsepower and rev limit. The material is not optimum for a high revving, high heat, high power, race car.

The factory fasteners were also not designed to be reused. Every time you torque a fastener, it stretches to perform the proper clamping force. If the fasteners stretch too far, they will no longer provide the required clamping force, and can lead to an engine failure. When you take your factory engine apart to build it into your race engine, discard your used factory main bolts and switch to a brand new set of ARP Main Studs to provide your engine with the proper clamping force required to keep all of your parts together in the harshest race environment.

• ARP Main Studs are stronger than your stock main bolts.
• You should not reuse fasteners multiple times (especially stock ones) - they stretch
• Quality Fasteners are required to keep everything where it belongs in your engine.

SCE VULCAN CUT-RING Head Gasket

A hybrid design forged to harness the best sealing properties of two head gasket types:

Composite

Pliable, perforated metal-core composite gasket body eliminates coolant and oil leaks. No sealant needed!

Stainless Steel

Solid stainless cut-ring ‘bites’ into the cylinder head forming a positive barrier against combustion pressure leaks. No machining required!

Designed for use with high static compression or forced-induction engines which are prone to combustion pressure leaks when using typical composite or MLS head gaskets. Especially 4-bolt-per-cylinder patterns such as BMW, Subaru, Toyota and Chevrolet LS series.

Engine Sealing Capability Exceeds:

• 16:1 Static Compression Ratio
• 35 lbs. Supercharged or Turbocharged forced induction
• 250 Shot of Nitrous Oxide