Gates Water Hose

Gates Water Hoses: Engineering That Goes the Distance

When it comes to keeping an engine's cooling system intact, the hose routing coolant between the radiator and engine is far more than a simple rubber tube — it's a critical barrier between a healthy engine and a costly breakdown. Gates has spent over a century developing fluid power solutions, and their lineup of water hoses represents some of the most rigorously engineered coolant hose products available in the automotive aftermarket.

Built to Defeat the #1 Cause of Hose Failure

The defining challenge in coolant hose engineering is Electrochemical Degradation (ECD). ECD occurs when the hose, liquid coolant, and engine/radiator fittings form a galvanic cell or "battery," creating a chemical reaction that causes micro-cracks to form in the hose tube — coolant seeps into these cracks and begins to break down the reinforcement, leading to hose failure and roadside breakdowns. Gates has addressed this head-on: their EPDM coolant hose material compound is engineered with superior electrochemical resistance so Gates coolant hoses last longer and keep engine systems running stronger.

A Comprehensive Lineup for Every Application

Gates offers one of the broadest water hose selections in the replacement market, spanning multiple product lines tailored to specific vehicle needs:

• Molded Coolant Hose: Manufactured to fit upper, lower, bypass, heater, and other coolant applications with OEM-quality specifications. Gates' curved hose line is the most comprehensive line on the replacement market.
• Vulco Flex™ II Radiator Hose: A flexible, durable curved hose designed to bend in almost any direction, engineered with an improved sealing surface for greater leak resistance and the ability to replicate the angles and planes of a wide variety of expensive OE coolant hoses for quick, easy, and cost-effective replacement.
• Green Stripe™ Straight Coolant Hose: Designed for demanding heavy-duty coolant and air applications, with a two-ply bias fabric construction that maximizes flexibility and strength, featuring an advanced EPDM tube and cover that resist "cold water leaks" and remain soft and pliable even under adverse operating conditions.
• Straight Silicone Hose: For extremely high temperature radiator, heater, and coolant transfer applications, Gates Straight Silicone Coolant Hose is engineered with extra long-lasting silicone rubber for extreme ambient and radiant temperature conditions. Temperature range extends from -56°C to +177°C (-70°F to +350°F).
• Modular Coolant Hose: Gates is the Automotive Aftermarket leader in the unique modular assembly coolant hose segment — the Modular Radiator Hose is manufactured to fit specific applications and includes essential integrated OE components such as hose branches, quick-connectors, sensors, and restrictors.
• Small I.D. Molded Coolant Hose: The Gates Small Inside Diameter Molded Coolant Hose is factory-molded in OEM style to fit today's smaller, tighter-fitting engine compartments, and can be used for coolant, water, and air applications — and is approved for marine applications.

OEM Precision in an Aftermarket Package

For a secure fit to virtually every vehicle on the road today, Gates precision-manufactures molded engine hoses with exclusively-developed factory processes to ensure compatibility and exceptional performance to specific vehicle manufacturer specifications. Whether you're doing a routine service or chasing an overheating issue, the depth and precision of the Gates water hose lineup means there's likely an OEM-matched solution already on the shelf. Browse the full Water Hose category or explore everything Gates has to offer across belts, hoses, and cooling system components.