Earl's Straight Water Neck - O-Ring Seal - 20 AN Male Outlet - Clear - GM LS-Series Tachometer Signal Filter Takes some of the "bite"

Takes some of the "bite" out of the belts

3/8 in OD Shaft

Flat Tappet

For Advance Adapters

Black Plastic Blades

Earl's Straight Water Neck - O-Ring Seal - 20 AN Male Outlet - Clear - GM LS-Series Tachometer Signal Filter Takes some of the "bite"Engine Coolant Thermostat Housing Upgraded earlier LS water pumps to the less restritive late model thermostats Billet aluminum and stainless steel components Anodized protection on aluminum components Works with all LS water pumps (requires thermostat upgrade on early LS water pumps) Product Description: Water Neck Straight O Ring Seal 20 AN Male Outlet Aluminum Clear Anodized GM LS Series Sold Individually Earl's Performance Products was founded by