Peterson Fluid Systems Water Neck Riser Block - Aluminum w/ (2) -08 AN Ports Driving Suit Jacket GM Truck 1973-87

GM Truck 1973-87

Non-rotator style: Dyno tested and street proven

This to fit flat bottom rectangular style fuel cells with minimum dimensions of 11" long and 11" wide cross For best performance

GM Fullsize Truck 1999-2018

Rev Limiter

Peterson Fluid Systems Water Neck Riser Block - Aluminum w/ (2) -08 AN Ports Driving Suit Jacket GM Truck 1973-87Machined from Billet aluminum, these riser blocks have o ringed flanges and accomodate a thermostat. Available with 6AN, 8 AN, or 12AN ports for cylinder head water lines. Peterson Fluid Systems is the choice of champions for wet and dry sump oiling systems. Peterson Fluid Systems offers a complete system from their class leading oil pumps to their championship winning oil tanks, oil and fuel filters, and accessory drives. Peterson Fluid System