Go to RockAuto Home Page
More Information for GATES 18303
Add to Cart
Continue Shopping
GATES 18303close
Part image
Molded Heater Hose; 3/8" x 6-13/16"
Factory molded to fit specific applications. Meets or exceeds OEM specifications.
  • Engineered to resist electrochemical degradation (ECD®) – the leading cause of hose failure.
  • Eliminates water loss due to permeation.
  • Recommended for upper, lower, by-pass, heater and other coolant hose applications.
  • Heat and ozone resistant cover.
  • Installs easily without buckling, bending out of shape, or straining at connections.
  • Meets SAE 20R4 and 20R3 Type EC Class D-1 and D-2 specifications.
  • Temperature rating: -40°F to 275°F (-40°C to 135°C) in coolant hose applications

NOTE: Gates recommends replacing standard worm drive and spring loaded clamps with PowerGrip® SB clamps each time a new coolant hose is installed. CAUTION: Do not use for fuel or oil transfer applications.
Centerline Length (in)6.8
Centerline Length (mm)173
Number of Branches0
Inside Diameter 1 (in).38
Inside Diameter 1 (mm)10
Inside Diameter 2 (in).38
Inside Diameter 2 (mm)10
Number Of Quick Connect Fittings0
Alternate/OEM Part Number(s): 10303, 1628288380, 1628474010, 1628488380, 1628488381, 1629588380, 25523543, MD090942, MD168640, SID8303

GATES Warranty Information:
Limited Lifetime
Warranty Details