134-3609 Professional Series Head Bolt Kit for Gen III/LS Series Small Block Chevy [2003 & Earlier]
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ARPPART NUMBER: 070-134-3609

134-3609 Professional Series Head Bolt Kit for Gen III/LS Series Small Block Chevy [2003 & Earlier]

$18999
ShippingShips on Oct 01, 2026
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Small Block Chevy
    Professional Series Head Bolt Kit
  • Small Block Chevy Gen III/LS Series (2003 & Earlier)
  • Hex Head
  • 15 Percent Stronger than Grade 8 Fasteners
  • Includes Washers

    SB Chevy LS1 & LS6, 5.7L & 6.8L hex head bolt kit

    FAQ

    Are ARP header bolts worth it?

    Absolutely, investing in high-quality fasteners like the ARP 134-3609 Head Bolt Kit is well worth it for performance enthusiasts and engine builders. The ARP 134-3609 is specifically designed for Gen 3 LS engines, offering exceptional durability and reliability. When it comes to securing the cylinder heads of high-performance engines, ARP is a trusted name known for its precision manufacturing and superior materials. ARP header bolts provide the necessary clamping force to ensure a tight seal and prevent head gasket failures, making them a valuable upgrade for anyone seeking reliable performance from their LS engine.

    Can ARP LS head bolts be reused?

    While ARP is known for producing high-strength and durable fasteners, it is generally not recommended to reuse head bolts, including the ARP 134-3609 Head Bolt Kit. The stretching that occurs during the initial installation can compromise the integrity of the bolts, potentially leading to reduced clamping force and an increased risk of head gasket failure. For optimal performance and safety, ARP recommends using new head bolts whenever the cylinder heads are removed or replaced. This ensures that the bolts maintain their original specifications and provide the necessary clamping force to secure the cylinder heads in high-performance LS engines.

    What is special about ARP bolts?

    ARP bolts, such as the ARP 134-3609 Head Bolt Kit designed for Gen 3 LS engines, are known for their exceptional strength, precision machining, and stringent quality control. These bolts are made from high-grade materials and undergo heat treatment processes to achieve the necessary tensile strength and durability. ARP bolts are designed to withstand extreme conditions, making them ideal for high-performance applications where reliable clamping force is crucial. Engine builders and enthusiasts trust ARP for their attention to detail and commitment to producing fasteners that meet the rigorous demands of high-performance engines.

    What thread are small block Chevy head bolts?

    The ARP 134-3609 Head Bolt Kit is specifically designed for Gen 3 LS engines, not small block Chevy engines. However, for small block Chevy engines, head bolts typically have a 7/16-14 thread size. It's important to choose fasteners that are specifically designed for the engine type to ensure proper fitment and performance. Always refer to the manufacturer's specifications and recommendations when selecting head bolts or any other fasteners for your engine build to guarantee optimal fit and functionality.

Part TypeCylinder Head Bolt
BrandARP
Package Height2.4
Package Width4.2
Package Length8.7
Weight5.81 PG
Part CategoryPerformance Parts
Washers IncludedYes
QuantitySold as a kit
Fastener StyleBolt
Fastener FinishBlack oxide
Cut To FitNo
Fastener MaterialChromoly
Head StyleHex
Undercut StudNo
Vendor Part Number134-3609
Package Qty1
Package TypeEA
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