3/8-16 x 3/4 Header Bolt Set (12) Combo Hex & Soc The 558-416 is an adapter

The 558-416 is an adapter harness that can be used to adapt any LS harness that uses an LS1/2 MAP sensor connection to an LS3 MAP

Coil Spring - Coil-Over - 3 in ID - 12 in Length - 225 lb/in Spring Rate - Steel - Purple Powder Coat - Each

Vehicle Scale - Elite Kart - Electric - 12 in Square - 400 lb Capacity Pad - Case / Controller / Pads / Wiring - Aluminum - Natural - Kit

Mechanical Cooling Fan - 15 in Fan - 2 Blade - 3/4 in Hub - Universal Bolt Pattern - Aluminum Hub / Plastic Blades - Black / Natural - Kit

Intake Manifold - RPM Air Gap Olds 455 - Square Bore - Dual Plane - Aluminum - Natural - Oldsmobile V8 - Each

3/8-16 x 3/4 Header Bolt Set (12) Combo Hex & Soc The 558-416 is an adapterHeader Bolt 3 8 16 in Thread 0. 75 in Long Hex Allen Head Steel Black Oxide AMC V8 GM V8 Mopar B RB Series Set of 12