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ARP High Performance Series Cylinder Head Bolt Kits

4.79 out of 5 stars 1034 Customer Reviews

ARP High Performance Series head bolt kits are tough. They are rated at 180,000 psi--15 percent stronger than Grade 8 fasteners. They come available with a reduced wrenching hex head or 12-point head that help eliminate the need for valvetrain removal when re-torqueing cylinder heads.

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ARP High Performance Series Cylinder Head Bolt Kits 123-3603

Made in the USA ARP High Performance Series Cylinder Head Bolt Kits 123-3603

ARP High Performance Series Cylinder Head Bolt Kits 123-3603

Cylinder Head Bolts, High Performance, Hex Head, Buick, 3.8L, Kit

Part Number: ARP-123-3603

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

ARP High Performance Series Cylinder Head Bolt Kits 123-3703

Made in the USA ARP High Performance Series Cylinder Head Bolt Kits 123-3703

ARP High Performance Series Cylinder Head Bolt Kits 123-3703

Cylinder Head Bolts, High Performance 12-Point, Buick, 3.8L, Kit

Part Number: ARP-123-3703

Not Yet Reviewed

Estimated Ship Date: Nov 24, 2025 if ordered today

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Estimated Ship Date: Nov 24, 2025 if ordered today

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