Wilson Manifolds Carburetor Spacer - 4500 1" Open L/W H Beam Connecting Rod Includes NGP (No Ground Plane)

Includes NGP (No Ground Plane) VHF 1/2 Wave antenna and 3/8" NMO style cable mount with 15 feet of cable

GM Duramax 2011-20

Hard Core Gray with black anodized billet aluminum metering block and booster inserts

They include internal gussets for additional strength

Wilson Manifolds Carburetor Spacer - 4500 1" Open L/W H Beam Connecting Rod Includes NGP (No Ground Plane)Nitrous Pro Flow open spacers have become the standard in NASCAR NEXTEL Cup racing, but are for use in any application where a top quality light weight billet spacer is desired. Open spacers increase plenum volume and move the throttle blades away from the roof of the runners, allowing the air fuel mixture to turn more easily into the runners for improved distribution and mixture quality. Open spacers will add mid range and top end hp. Nitrous Pro