Necks swivel 360° for exact hose alignment. Viton seals are used internally and the flange is O-Ring sealed. Improvements include hard coat anodizing for improved wear and a secondary locking pin for fitting retention. Proven in NASCAR Winston Cup. Must use a spacer with thermostat.
Note: In the event it is necessary to dissasemble above water necks, it is necessary to replace the spiral lock ring if it has been damaged or bent during disassembly. Use extreme care when reinstaling the spiral lock ring to be sure it is completely seated in the lock ring groove.
Fits Chevy V8