Dart Valve Guide 2.150 - .439 8mm LS1 28750BK It's 1-1/16" female oil return

It's 1-1/16" female oil return and oil feed ports accept -12 port O-ring fittings

Blue lens and blue night cover

Stainless steel tanks capture coolant overflow and recirculates it to the radiator

Chevrolet Performance is the place

Applications include:

Dart Valve Guide 2.150 - .439 8mm LS1 28750BK It's 1-1/16" female oil returnProduct Description: Valve Guide 8 mm Valve 2. 150 in Long 0. 439 in OD Manganese Bronze Sold Individually Since 1981, Dart Machinery has become the acknowledged leader in producing race winning components. Dart Machinery aluminum and cast iron engine blocks are designed to meet the specialized needs of racers and performance enthusiasts. Dart components are developed in house, manufactured on Dartas own CNC machining centers, and tested on Dartas