ARP Header Bolt Kit M8 x 1.181" UHL Chevrolet LS Gen III/IV 3/8" Wide Flange 12-Point 8740 Chrome Moly Set of 12 ARP-134-1202

ARP Header Bolt Kit - Chevrolet LS Gen III/IV Engines

Secure your LS headers with ARP's premium header bolt kit. Engineered specifically for Chevrolet LS Gen III and Gen IV engines, these 8740 chrome moly bolts feature a wide 3/8" flange and 12-point head design for superior clamping force and easy installation in tight spaces.

Key Features:

• 8740 Chrome Moly Construction: High-strength alloy steel provides superior tensile strength and fatigue resistance
• 3/8" Wide Flange: Larger bearing surface distributes clamping load evenly for leak-free header sealing
• 12-Point Head Design: 10mm socket size provides superior grip and easier installation in confined spaces
• M8 Thread Size: Direct-fit replacement for LS Gen III/IV header applications
• Precision Machined: Manufactured to aerospace tolerances for consistent clamping force
• Complete Hardware Included: Washers included for proper installation
• Complete Set of 12: Everything needed for full LS header installation

Specifications:

• Thread Size: M8 x 1.25
• Under Head Length (UHL): 1.181" (30mm)
• Head Style: 12-point, 10mm socket
• Flange Width: 3/8"
• Material: 8740 chrome moly steel
• Quantity: Set of 12 bolts with washers
• Application: Chevrolet LS Gen III/IV engines
• Part Number: ARP-134-1202

Perfect for: LS1, LS2, LS3, LS6, LS7, L76, L92, L99, LQ4, LQ9, Holden Commodore VT-VZ, street performance builds, race engines, and any LS Gen III/IV header installation requiring reliable, leak-free sealing.

Don't trust your header installation to inferior hardware - ARP header bolts prevent leaks and ensure your headers stay secure under extreme heat and vibration.