Description: Description Professional Series All Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and meet the ARP "ZERO defect - ZERO failure" quality standard. ARP Pro Series head bolt kits are application specific and designed to deliver superior strength typically associated with competition engines. Pro Series kits are available in standard (8740) 190,000 psi tensile strength material and proprietary (ARP2000) 220,000 psi tensile strength material where noted. All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to permit the use of larger diameter valve springs and eliminate the need for valve train removal during cylinder head retorquing. Hardened parallel-ground washers are included in each kit. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more "stretch" to compensate for the additional compression of gaskets. Specifications SpecificationStyleStudUndercut StudNoThread Size7/16-20 in.Head Style12-pointMaterial8740 chromolyFinishBlack oxideWashers IncludedYesQuantitySold as a kit.NotesFactory Hemi, 7/16 inch.MakeMoparEngine FamilyMopar HemiEngine Size7.0L/426Years1966-1971Cylinder Head Style (application)HemiItem #ARP245-4203Mfg Part #245-4203 Powered by
Price: 269.39 USD
Location: Denver, Colorado
End Time: 2025-01-09T22:31:33.000Z
Shipping Cost: 0 USD
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Return shipping will be paid by: Buyer
Returns Accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Return policy details:
Brand: ARP
SKU: ARP245-4203
Manufacturer Part Number: 245-4203
Style: Stud
Undercut Stud: No
Thread Size: 7/16-20 in.
Head Style: 12-point
Material: 8740 chromoly
Finish: Black oxide
Washers Included: Yes
Quantity: Sold as a kit.
Notes: Factory Hemi, 7/16 inch.
Make: Mopar
Engine Family: Mopar Hemi
Engine Size: 7.0L/426
Years: 1966-1971
Cylinder Head Style (application): Hemi
