Instruction Sheets for Part Number ARP-204-3901
ARP Pro Series Cylinder Head Bolt Kits
Cylinder Head Bolts, Pro Series, Allen Head, Chromoly, Black Oxide, Audi, Volkswagen, 1.8L, Kit
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Estimated Ship Date from Texas: Monday 4/6/2026 Would you rather pick it up?
Overview
ARP Pro Series Cylinder Head Bolt Kits
The Pro Series cylinder head bolts from ARP are cold-forged to ensure molecular integrity. They are heat-treated prior to thread rolling and machining, and are rated at a whopping 190,000 psi. The Pro Series are also available with hex and 12-point heads. All kits come complete with hardened parallel washers for even load distribution and accurate torque readings.
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Some parts are not legal for use in California or other states with similar laws / regulations
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