Gates 18948 Small I.D. Molded Heater Hose 5/8 In. ID x 21-3/8 In.

The Gates 18948 is a premium Small I.D. Molded Heater Hose designed as a direct OE replacement for heater-to-engine coolant routing. Factory-molded to match original equipment specifications, this hose delivers a precise, leak-free fit in today's smaller, tighter-fitting engine compartments.

Key Features:

• Material: EPDM rubber construction for superior durability and flexibility
• Inside Diameter: 5/8 in. (16mm) on both ends
• Centerline Length: 21-3/8 in. (544mm)
• Application: Heater to engine coolant connection
• Engineered to resist electrochemical degradation (ECD) — the leading cause of premature hose failure
• Temperature Rating: -40°F to +275°F (-40°C to +135°C)
• Meets SAE 20R3 Type EC Class D-1 and D-2 specifications
• Approved for coolant, water, and air applications
• Approved for marine applications
• OE replacement fit — no trimming or adapters required
• Sold individually

Gates backs this hose with a lifetime limited warranty, reflecting their confidence in the product's long-term performance. For best results, Gates recommends replacing hose clamps each time a new coolant hose is installed. Not intended for fuel or oil transfer applications.