Gates 02-2059 Expansion Tank Coolant Hose

The Gates 02-2059 is a formed expansion tank hose engineered to OE-quality specifications for reliable coolant system performance. Designed as a direct-fit replacement, this hose connects the engine cooling system's expansion or overflow tank, maintaining proper coolant circulation and system pressure.

Constructed with an EPDM tube and synthetic fiber knit reinforcement topped with a heat-, ozone-, and chemical-resistant EPDM cover, the Gates 02-2059 is specifically engineered to resist electrochemical degradation (ECD) — the leading cause of premature hose failure. ECD occurs when the hose, coolant fluid, and metal fittings form a galvanic reaction that causes micro-cracks in the hose wall, and Gates' advanced EPDM compound is formulated to combat this from the inside out.

Key Features:

• OE-quality formed coolant hose for expansion tank applications
• EPDM tube with synthetic fiber knit reinforcement for long service life
• Heat-, ozone-, and coolant-resistant EPDM outer cover
• Engineered to resist electrochemical degradation (ECD)
• Pre-shaped for precise fitment and leak-free sealing
• Meets SAE 20R4 and DIN 73411 Class A specifications
• Temperature rated from -40°F to +257°F (-40°C to +125°C)

Gates recommends replacing hose clamps each time a new coolant hose is installed to ensure a proper seal and prevent leaks. The Gates 02-2059 delivers the same fit and function as the original equipment hose, making it a trusted choice for professional technicians and DIY enthusiasts alike.