CHEVY V6 90-DEG MAIN BOLT KIT Replacement Timing Cover Hardware Kits The Sierra Marine 18-3683 is

The Sierra Marine 18-3683 is a precision thermostat or thermostat housing engineered for accurate engine temperature regulation

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This magnum flow filter (SKU: Magnum Flow Filter) is a air filter component designed for enthusiasts upgrading their air intake and fuel system

This aFe Pro 5R drop-in air filter element (part 30-10121) is a direct replacement for 2005-2010 MUSTANG that swaps out your restrictive OEM paper filter for a high-flow performance alternative

This aFe Momentum HD air intake system (part 50-72005) is a complete intake upgrade for 2013-2018 2500

CHEVY V6 90-DEG MAIN BOLT KIT Replacement Timing Cover Hardware Kits The Sierra Marine 18-3683 isThe CHEVY V6 90 DEG MAIN BOLT KIT reinforces the engine's lower end by providing consistent, repeatable main bearing cap clamping. These main bolts prevent cap walk and main bearing bore distortion at elevated RPM where factory fasteners may allow crankshaft deflection and bearing clearance changes. Part 53058 is configured for its specific application with attention to fitment requirements. ARP main bolts are machined from 8740 chromoly steel, heat