Michigan Motorsports LS/LT Exhaust Manifold/Header Bolt Kit | 12pc Flanged Grade 10.9 Bolts | M8x1.25, 25mm Length | Fits 1997-2021 LS1 LT1 4.8L 5.3L 5.7L 6.0L 6.2L 7.0L

Ensure a secure, leak-free seal on your LS or LT engine’s exhaust system with the Michigan Motorsports 12-piece Exhaust Manifold/Header Bolt Kit. These flanged, Grade 10.9 bolts are engineered for optimal clamp load and heat resistance, fitting both OEM manifolds and aftermarket headers. With M8×1.25 threading and 25 mm under‑head length, installation is straightforward and reliable. Compatible across 1997–2021 GM Gen 3, 4, and 5 LS/LT V8 engines, this kit provides everything you need for a dependable install that meets or exceeds factory standards.

• High-Strength Grade 10.9 Construction – Made to withstand engine bay heat and torque stress, ensuring long-term reliability.
• Universal LS/LT Fitment – Compatible with all GM Gen 3, 4, and 5 LS/LT V8 engines between 1997 and 2021—including popular 4.8L to 7.0L platforms.
• Ideal Thread and Length Specs – M8×1.25 threading and 25 mm under-head length provide proper fit for both factory and aftermarket exhaust manifolds.
• Complete 12‑Piece Kit – Includes a sufficient number of bolts to secure both sides of your engine’s exhaust, simplifying installation or repair.
• Recommended Torque Settings – Designed for precision installation; torque to 18 ft‑lb to match factory specifications and ensure a secure fit.