Description
ARP Head Stud Kit for Honda K24 Block with K20 Head
Essential high-clamping fastener kit engineered specifically for Honda K24 block and K20 cylinder head hybrid K-Frank engine builds.
Engineering Superiority for K-Series Hybrid Builds
When assembling a hybrid Honda K-series engine—combining the high-displacement K24 cylinder block with the high-flowing K20/K20A cylinder head—standard head bolts fail to provide adequate clamping force under elevated combustion pressures and high RPMs. The ARP AR8606 head stud kit (also referenced as ARP 208-4701) is custom-engineered to solve this specific dimensional and clamping requirement.
Manufactured from premium-grade 8740 chromoly steel alloy and heat-treated in-house to 190,000–200,000 PSI tensile strength, these studs eliminate head gasket lifting and cylinder bore distortion. Precision thread rolling after heat treatment delivers exceptional fatigue resistance and thread strength compared to standard cut-thread fasteners.
Key Features
- ☑ Engineered specifically for Honda/Acura K24 block and K20 head hybrid engine combinations.
- ☑ Premium 8740 chromoly steel construction heat-treated to 190,000-200,000 PSI.
- ☑ Precision cold-rolled threads created post heat-treatment for maximum fatigue endurance.
- ☑ Includes hardened parallel-ground washers and 12-point nuts for equal load distribution.
- ☑ Prevents head gasket failure, head lifting, and cylinder bore deformation under extreme boost or high compression.
Technical Specifications
| Brand | ARP / Brian Crower |
|---|---|
| Part Number | AR8606 (ARP 208-4701) |
| Application | Honda K24 Block w/ K20 Head (K-Frank Hybrid) |
| Fastener Material | 8740 Chromoly Steel |
| Tensile Strength | 190,000 – 200,000 PSI |
| Nut Style | 12-Point High-Strength Nuts |
| Finish | Black Oxide Coating |
What’s Included in the Box
- 8740 Chromoly ARP Cylinder Head Studs
- Precision Parallel-Ground Hardened Washers
- 12-Point High-Strength Steel Head Nuts
- ARP Ultra-Torque Fastener Assembly Lubricant
As an authorized distributor of world-class motorsport componentry, JP Racing supplies verified ARP performance hardware across the UK. Whether you are building a high-boost turbo setup or a high-revving naturally aspirated K-series engine, our UK technical support team is available to assist with correct specifications and fast dispatch.
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