PLKHCU stainless steel header bolt kit 3/8-16 x 1" – 16-pack for Ford SBF/BBF & Chevy SBC, corrosion‑resistant, includes washers

PLKHCU stainless steel 3/8-16 x 1" header bolt kit is a corrosion-resistant fastener set engineered to secure aftermarket exhaust headers on a wide range of Ford and Chevrolet small‑ and big‑block V8 engines.

This bolt kit supplies 16 sets of 3/8-16 x 1" bolts and matching washers made from stainless steel, sized for aftermarket header flanges up to 1/2" thick. It's intended for builders, restorers, and performance installers fitting SBF/BBF (Small/BIG Ford) and SBC (Small Block Chevy) headers as well as many related GM, Pontiac, Buick, and Oldsmobile V8 applications. The kit emphasizes long-term rust resistance and easy installation with common hand tools.

Which engines and headers are these bolts compatible with?

These bolts were selected to fit a broad set of popular V8 engines from Ford and Chevrolet plus related makes. They accommodate many classic and later small‑block and big‑block applications when used with aftermarket headers.

• Ford SBF/BBF: 260, 289, 302, 351W, 351C, 352, 390, 428, 429, 460, FE-series engines
• Chevy SBC: 265, 283, 305, 327, 350, 383, 400 and Gen I/II platforms including LT1/LT4/TPI/TBI
• Also fits Pontiac, Buick, Oldsmobile V8s and applications in Mercury, Lincoln, Mustang, Bronco, F-Series and more
• Designed for aftermarket header flanges up to 1/2" thick

How do these bolts perform in corrosive or high-heat conditions?

The bolts are manufactured from stainless steel to resist rust and galvanic corrosion that commonly affects chrome or plain carbon fasteners near exhaust systems. Their finish holds up under heat cycling and road salts, reducing the risk of seized fasteners during service or removal.

• Stainless steel construction for superior corrosion resistance
• Will not flake chrome or oxidize like untreated steel fasteners
• Smoother removal and less chance of broken studs at disassembly

What tools and techniques are needed to install the bolts?

Installation is straightforward using standard hand tools. The bolt heads accept a 5/16" Allen key or socket, so no specialty fasteners are required. Follow common torque practices for stainless hardware to avoid galling.

• Use a 5/16" Allen wrench or socket for driving
• Apply anti-seize or light lubricant on threads if reusing or in high-heat builds
• Torque to header manufacturer’s specification; avoid over-tightening

What’s included in the kit and how many fasteners do I get?

The package contains 16 complete bolt-and-washer sets—enough for most two‑manifold V8 header installations where each flange hole is secured. The washers help distribute load and protect flange surfaces during tightening.

• 16 stainless steel 3/8-16 x 1" bolts
• 16 stainless steel washers matched to bolt size
• Packaged and inspected before shipment

Who this kit is for: This fastener set is aimed at automotive enthusiasts, professional mechanics, and restoration shops installing aftermarket exhaust headers on classic Fords and Chevrolets or swapping compatible GM and Mopar V8 manifolds. It’s a practical choice when you need reliable, corrosion‑resistant hardware sized for thicker aftermarket flanges and simple, tool‑friendly installation.