Muli-Layered Steel Black Diamond coating 20mm Head Gaskets 54657 (2 Gaskets, for left and right side). Mahle Advanced Black Diamond coating Head Gaskets. Constructed of (5) five stainless steel layers. Utilizing patented integrated push rod locators. Coated with a Victor Reinz proprietary fluoroelastomer (rubber) coating.
The coating seals and impregnates into the mating component surface where it decreases friction forces and allows controlled sliding of the mating components relative to the gasket without fretting or damage to aluminum engine components. The Black Diamond coating is soft enough for cold sealing and features maximum adhesion, increased durability and temperature resistance and is also resistant to engine fluids including gas, oil and coolant.
It is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there's not a better stud setup on the market today. For openers, ARP uses a premium grade 8740 alloy that is rated far superior to "aircraft" quality. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.
Following heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It's important to note that lesser quality studs are not even centerless ground - the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned - something that won't happen with inferior quality head studs. ARP studs are thread rolled after heat-treat, which gives them about 1000% (that's ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice).
It costs a lot more to do it this way, because it's tough on tooling, but the results are well worth the extra effort. 18 mm Alignment Dowels - Manufactured 2003 - Jan 11, 2006######xA0.
20 mm Alignment Dowels - Manufactured######xA0; January 12, 2006 and newer. Please contact prior to ask about thickness options. Photos are illustrative purposes only!
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We always look to satisfy our customers in whatever needs they may have. Please be aware that under no circumstances S&K International Trading LLC "My Garage" will be held responsible for any labor or repair or any other costs incurred from the parts found to be faulty, defective or incorrect or any other costs arising from parts supplied. A replacement will not be dispatched until we receive the faulty or damaged parts back. We use generic images on listings.It is your responsibility to make sure you are purchasing the correct item. If you receive your order and find something is missing or damaged, please contact with us within 24 hours of receiving your order. This listing is currently undergoing maintenance, we apologise for any inconvenience caused. The item "ARP 250-4203 Head Studs Gasket Kit Fits 2008-2010 FORD F250-350-450-550 6.4L" is in sale since Friday, May 4, 2018.
This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Cylinder Heads & Parts". The seller is "mygarageautoparts" and is located in Poway, California. This item can be shipped worldwide.
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