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Green Stripe® Vulco-Flex® Coolant Hose

Gates® Green Stripe® Vulco-Flex® heavy-duty flexible coolant hose is designed to replace straight or curved coolant hoses on a range of trucks, busses, and heavy-duty vehicles, so you can get maximum model coverage with minimum inventory. The smooth, constant inside diameter allows coolant to flow freely through the hose, with a durable construction to handle high temperatures and harsh system corrosives.

  • Excellent flexibility, yet collapse and kink resistant
  • Extra strength fabric reinforcement with helical steel wire spiral molded between tube and cover
  • Heat-resistant construction throughout
  • EPDM tube and neoprene cover for extended service life
  • Performs to SAE 20R5 Type EC Class D-2 specifications
  • Engineered with compounds to resist electrochemical degradation
  • Temperature rating: –40°C to +125°C
  • Working pressure 40 psi maximum
  • Approved for marine applications
  • Caution: Do not use for fuel or oil transfer applications

All Parts

1-10 of 43 Items
Part # Product # Description Max W.P. (psi) Max W.P. (bar) Hose I.D. (in) Hose I.D. (mm) Hose O.D. (in) Hose O.D. (mm) Vac. (inHg) MBR (in) Wt. Per ft Len. (ft)
26501 42840122 26501 GS VULCO-FLEX 1.75 44 0.73
26502 42840123 26502 GS VULCO-FLEX 1.75 44 0.88
26503 42840134 26503 GS VULCO-FLEX 1.75 44 0.63
26504 42840124 26504 GS VULCO-FLEX 1.75 44 0.92
26505 42840120 26505 GS VULCO-FLEX 1.75 44 1.07
26506 42840135 26506 GS VULCO-FLEX 1.75 44 1.36
26507 42840121 26507 GS VULCO-FLEX 2 51 0.56
26508 42840115 26508 GS VULCO-FLEX 2 51 0.79
26509 42840113 26509 GS VULCO-FLEX 2 51 0.9
26510 42840114 26510 GS VULCO-FLEX 2 51 1.05
1-10 of 43 Items

Keeps Your Coolant Moving and Your Engine Running.

Whether you're working on a construction site or sending fleets across the country, maintaining the proper engine temperature is critical to ensure your trucks, busses, and vehicular equipment run properly. Our heavy-duty coolant hoses are designed for superior resistance to corrosion, chemicals, and high-operating temperatures, and they're tested to stand up to some of the most challenging applications in the industry.

Inspecting Your Coolant Hose.

As part of our Be System Part initiative, we recommend regularly inspecting your critical vehicle systems, including your cooling system and hoses, at around 60,000 miles. As your coolant hose begins to age, the constant transfer of chemical fluids will corrode your hose from the inside out. When inspecting your coolant hose, there are a few simple signs that it's ready for replacement:

Press for Soft Spots. The radiator hose is naturally rigid, and any soft spots along the hose body indicates the inner material has begun to break down. Firmly press on the hose body to feel for potential deteriorations.

Check the Ends and Fittings. Look for cracks around the hose end, especially near the hose clamps.

Feel for Bulges. Run your hands along the hose body to feel for protruding materials, which indicate a rupture within the hose that will eventually lead to failure.