two piece spring tensioned tubing that expands and contracts with enginedual viton o-ring seals between the tubes stock type end sealsthey have an inner tube diameter of 7/8"
These billet aluminum push rod tubes have been designed to the specific requirements of hi-performance engine building. Features a 2 piece spring tensioning tube that expand with the engine. Large mouth for maximum clearance. Sold set of 8 Material: Billet Aluminum Type: Spring Loaded Quantity: 8 Pieces PUSH ROD TUBES Hi-Performance
Brand: Empi, Model: 00-4109-0