Description
Feuling 3040 ARP 12-Point Rocker Box Bolt Fastener Kit for Twin Cam Engines
When engine sealing and fastener strength matter, quality hardware makes a difference. That’s why the Feuling 3040 rocker box bolt kit delivers consistent torque and reliable clamping force. At the same time, this kit upgrades critical rocker box hardware while maintaining proper fitment and a clean, performance-ready look.
ARP® builds each fastener to Feuling®’s exact specifications, so the bolts hold clamping force even under heat and stress. As a result, they help reduce leaks and maintain gasket integrity during demanding engine operation.
Key Features & Benefits
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Built from heat-treated 8740 chrome moly steel for high strength
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Finished with a black oxide coating to improve durability and corrosion resistance
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Uses precision-rolled threads, which improve engagement and reduce galling
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Features a wide under-head flange that spreads load evenly across sealing surfaces
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Helps improve gasket sealing and reduce leak potential
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Delivers 170,000 psi tensile strength, exceeding OEM and Grade 8 fasteners
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Manufactured in the USA by ARP® to Feuling® specifications
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Includes moly assembly lubricant to support accurate torque during installation
For best results, pair this fastener kit with a complete rocker box gasket set. For example, the Cometic Rocker Box Gasket Kit for Twin Cams supports proper sealing during a full rocker box service.
👉 Cometic Rocker Box Gasket Kit for Twin Cams is recommended for best results.
