Radiator Hoses and Clamps Speedster

Posted On: February 27, 2015

On supercharged cars the upper hose 4S1230, at 1-1/2 inch by 7 inch.

The lower return hose from the radiator to the water pump incorporates:

  • Hose section 1-1/2 inch x 4 inch 4S1216 at the bottom
  • S shaped pipe H10306. Note this is not symmetrical and is installed only one way
  • Hose section 4s1213, at 1-1/2 inch by 3-1/4 inch at top
  • All secured with four 7s10 clamps.


RESTORATION TIP – Care must be taken to install clamps from bottom to top, being sure the fan blade clears this assembly.