Jolly (500) JC450 Constant Tension SAE 462 Hose Clamps 3.75" to 4.63" Repl. CT450LSS Style_D3S Bypass valve built-in

Bypass valve built-in

The new F133N supersedes the older style F103N

marine engine mechanics

Hanging ring

Jolly (500) JC450 Constant Tension SAE 462 Hose Clamps 3.75" to 4.63" Repl. CT450LSS Style_D3S Bypass valve built-inPACK OF 500 CLAMPS Jolly Brand's constant tension hose clamps are a superior form of clamps designed to eliminate "cold flow" leaks with their Belleville spring mechanism. This allows the clamp to automatically expand and contract as the engine temperature increases and decreases. They also feature an extended inner liner which protects softer hoses such as silicone from the worm gear serrations. The 5 8" band, housing and screw are made from