Gates 18275 Small I.D. Molded Coolant Hose Upper Tee-to-Reservoir 47.8 in.

The Gates 18275 is a small inside-diameter molded coolant hose designed as a direct OE replacement for upper cooling system applications. Routed from the tee to the reservoir, this hose measures 47.8 inches in overall length with inside diameters of 0.32 in. and 0.60 in. at each end, making it an exact-fit solution for tight, modern engine compartments.

Gates factory-molds this hose to OEM-exact specifications, ensuring a precise fit and leak-free seal without modification. The EPDM rubber construction with synthetic fiber knit reinforcement delivers superior resistance to heat, ozone, and electrochemical degradation (ECD) — the leading cause of coolant hose failure. Gates engineers the EPDM compound specifically to resist the galvanic reaction that causes micro-cracking from the inside out, extending service life well beyond standard hoses.

Key Features:

• Overall length: 47.8 inches
• Inside diameters: 0.32 in. x 0.60 in.
• Position: Upper — tee to coolant reservoir
• Color: Black
• EPDM tube and cover with synthetic fiber knit reinforcement
• Engineered to resist electrochemical degradation (ECD)
• Pre-shaped for a precise, sealed fit — no trimming or adapters needed
• Approved for marine applications
• OE replacement fit and function
• Sold individually
• Backed by a lifetime Gates limited warranty

Gates recommends replacing hose clamps whenever installing a new coolant hose to ensure a fully sealed, reliable cooling system. The Gates molded coolant hose line is one of the most comprehensive replacement lines available, covering a wide range of late-model applications.