Gates 12037 Premium Molded Heater Hose Small I.D. EPDM Coolant Hose

The Gates 12037 Premium Molded Heater Hose is a factory-molded, OEM-style coolant hose engineered to fit today's smaller, tighter-fitting engine compartments. This pre-formed hose features a 29-1/16 inch centerline length with dual inside diameters: 3/4 inch on one end and 1 inch on the other, making it ideal for heater and coolant system applications.

Key Features:

• Constructed with durable EPDM rubber tube, synthetic fiber knit reinforcement, and EPDM cover for superior longevity
• Engineered to resist electrochemical degradation—the leading cause of coolant hose failure
• Temperature rated from -40°F to 275°F (-40°C to 135°C) for reliable performance in all climates
• Meets SAE 20R3 Type EC Class D-1 and D-2 specifications
• Approved for marine applications as well as coolant, water, and air transfer
• Similar to OEM specifications for precise fit and function

Specifications:

• Centerline Length: 29-1/16 inches (738mm)
• End 1 Inside Diameter: 3/4 inch (19mm)
• End 2 Inside Diameter: 1 inch (25mm)
• Material: EPDM Rubber
• Cross-Reference Part Numbers: 11531709052, 13037, 18480L, 19529, 31434, 46830, CHR0262R, R19529

Gates recommends replacing hose clamps each time a new coolant hose is installed for optimal performance and leak-free operation. Do not use for fuel or oil transfer applications.