Moroso SB Chevy Deck Plug Kit - SB and 90 V6 Chevy Head & Neck Restraints Two 2-5/8 in Diameter Gauges

Two 2-5/8 in Diameter Gauges

The alloy steel ball studs are process coated for low friction and long wear

only 3/16 in

2002-2002 Hummer H1

Moroso SB Chevy Deck Plug Kit - SB and 90 V6 Chevy Head & Neck Restraints Two 2-5/8 in Diameter GaugesUpper cylinder wall distortion is greatly reduced when these 3 4" NPT plugs are installed in the water passage holes in the decks of Small Block and 90 V6 Chevy engines Water holes must be tapped before the plugs are screwed in; block must also be decked after installation Plugs also restrict water flow to the cylinder heads by reducing size of water passage holes to 5 16" Packaged 6 to a kit Moroso Performance Products is one of the worlds most