(12 PCS) 551696 Exhaust Manifold Header Bolt Kit for LS Series Engines LS1 LS2 LS3 LSX LT – Grade 10.9 Steel LS Header Bolts Replacement Set (Color Zinc Plated)

12PCS Exhaust Manifold/Header Bolt Kit for LS Series Engines This high-quality 12PCS Exhaust Manifold/Header Bolt Kit is designed to meet JIS specifications and provides a reliable solution for securing exhaust manifolds and header flanges on LS Series engines. Each bolt features an integrated flanged head, eliminating the need for additional washers. Ideal for engine swaps, rebuilds, or performance upgrades. Items Included: This kit contains 12 premium-grade exhaust manifold/header bolts designed to fit LS Series engines, offering secure fastening and easy installation. Compatibility: Directly replaces OEM Part Number 551696. This header bolt kit is engineered for LS Series engines, including LS1, LS2, LS3, LS6, LSX, LM7, LR4, LQ4, LQ9, L33, LH6, L92, L76, L99, L96, L82, L83, L84, L86, L87, and LT1 models. Premium Quality: Crafted from heavy-duty alloy steel, these bolts feature Grade 10.9 high-strength steel for exceptional durability and performance. The high-strength material ensures long-lasting security for your exhaust manifold. Color Zinc Plated Finish: The bolts feature a durable color zinc plated coating that provides reliable corrosion and rust resistance under normal engine bay conditions. This finish helps extend service life while maintaining a clean, professional appearance, ensuring dependable performance for exhaust manifold and header installations. Perfect for Engine Swaps & Performance Upgrades: This kit is ideal for LS engine swaps, performance rebuilds, or replacing worn-out OEM bolts. Trusted by mechanics and DIY enthusiasts, it ensures a secure, durable installation for any LS-powered project.

• 12PCS COMPLETE HEADER BOLT KIT. This set includes 12 premium exhaust manifold/header flange bolts with integrated flanged heads—no need for extra washers. Designed to meet JIS specifications for precise fit and secure installation.
• Compatibility: Directly replaces OEM Part Number 551696. This header bolt kit is engineered for LS Series engines, including LS1, LS2, LS3, LS6, LSX, LM7, LR4, LQ4, LQ9, L33, LH6, L92, L76, L99, L96, L82, L83, L84, L86, L87, and LT1 models.
• GRADE 10.9 HIGH-STRENGTH STEEL. Each bolt is manufactured from heavy-duty alloy steel with a Grade 10.9 rating—built to withstand extreme torque, vibration, and heat for long-lasting, secure performance.
• COLOR ZINC PLATED COATING. Features a color zinc plated finish that provides effective corrosion and rust resistance under normal engine bay conditions, helping maintain secure performance and a clean appearance over time.
• IDEAL FOR LS SWAPS & REBUILDS. Perfect for engine swaps, performance upgrades, or replacing worn-out OEM hardware. Trusted by mechanics and DIYers for reliable exhaust manifold fastening on any LS project.