Chev Thermostat Water Neck Spacer With 2 X -8 orb Aux Port Differential these 210cc cylinder heads are

these 210cc cylinder heads are ideal for operating in the idle to 7500 rpm range

Part Number: AF309-03

Sizes: M18 x 1

Part Number: AF549-16-12

Whether you need stock

Chev Thermostat Water Neck Spacer With 2 X -8 orb Aux Port Differential these 210cc cylinder heads arePart Number: AF64 4051 water neck spacer. 's chevy water neckspacer kit is the perfect solution for allowing an extraauxiliary port of coolant and can be used for many applications including plumbing coolant to a turbocharger, extra coolant flow from rear of heads or simply connecting your heater in a conversion. The unit is 28mm (1 7 64") high and features 2x 8 orb female threads. available in silver or black.