Additional Info: Gates Molded Coolant Hose is manufactured to fit specific applications. Similar to OEM specifications. Approved for marine applications. Recommend for upper, lower, by-pass, heater and other coolant hose applications. Heat and ozone resistant cover. Engineered to resist electrochemical degradation - the leading cause of hose failure. Re-engineered materials resist vacuum collapse. This reduces the need for internal springs in many applications. Meets SAE 20R4 and 20R3 Type EC Class D-1 and D-2 specifications. Temperature Rating: -40Deg F to 275Deg F (-40Deg C to 135Deg C) in coolant hose applications. Note: Gates recommends replacing standard worm drive and spring loaded clamps with Gates PowerGrip(R) SB Clamps each time a new coolant hose is installed. Gates - Driven By Possibility 1. Package Dimensions: 16.72 x 6.27 x 2.00 inches 2. UPC: 072053248296 3. Centerline Length: 20.9 IN 4. Centerline Length: 531 MM 5. Contains Spring: No 6. Inside Diameter 1: 1 IN 7. Inside Diameter 1: 25 MM 8. Inside Diameter 2: 1.25 IN 9. Inside Diameter 2: 32 MM 10. Modular Hose: No 11. Number of Branches: 0 12. Country of Origin: US