253 308 Holden Thermostat Housing Black W/heater Swivel Carburettor and TBi Over time with heat these

Over time with heat these plugs can become brittle and break apart so it's a great idea to replace them to avoid any unwanted misfiring issues

Part Number: AF544-08-06BLK

Holley 4150 -8 AN

Part Number: SRB-001

Part Number : PFESS-PCHW400-90

253 308 Holden Thermostat Housing Black W/heater Swivel Carburettor and TBi Over time with heat thesePart Number: AF64 2091BLK suits holden 253 308 (gm australia v8) swivel with an optional heater barb fitting which can be blocked off with a 6orb port plug (sold separately). accepts chevy thermostat. the Aeroflow performance billet thermostat housings area three piece design that allows for correct positioningof the outlet to suit a large array for applications especially in conversions where small can be an issue. Machined from t6 6061 billet