Gates 23929 Radiator Coolant Hose - Upper

Gates 23929 Molded Coolant Hose

The Gates 23929 molded coolant hose is an OE-style radiator coolant hose built for upper cooling system service. Made from EPDM and formed to the correct molded shape, it supports a direct replacement for select Toyota Hilux, Tacoma, and 4Runner applications.

Gates Molded Coolant Hose line covers upper, lower, bypass, heater, and other coolant routing needs with OEM-quality specifications. This hose is part of that application-focused range, giving you a replacement option that matches the original routing and dimensions for the listed vehicles.

Key Features

• Brand: Gates Molded Coolant Hose
• Part number: 23929
• Material: EPDM for coolant-system use
• Molded design for proper hose routing
• End 1 inside diameter: 1.31 in. (33 mm)
• End 2 inside diameter: 1.31 in. (33 mm)
• Centerline length: 22.2 in. (564 mm)
• Contains spring: No
• Quick connect fittings: 0

Detailed Description

Gates 23929 is a molded radiator coolant hose for upper hose applications on select Toyota trucks and SUVs. It is listed for 1995-2004 Toyota Tacoma upper, 1996-2000 Toyota 4Runner upper, and 2004 and 2010 Toyota Hilux upper applications. If you are replacing a worn Toyota Tacoma upper radiator hose or servicing a Toyota 4Runner cooling system, this hose provides the molded profile and sizing needed for the original routing.

This part cross-references Bosch 16597 and Continental 62178 for the same application. The Gates 23929 part number is also useful when searching for an OE-style replacement hose with the correct 1.31-inch ends and molded centerline length.

What It Helps Address

• Coolant leaks from cracked or aged upper radiator hose material
• Softening, swelling, or collapse in the cooling hose
• Improper hose routing after a previous replacement
• Loss of cooling-system integrity from worn EPDM hose construction
• Fitment issues when replacing a Toyota Tacoma, 4Runner, or Hilux upper hose

Installation Notes and Tips

Confirm the hose shape, end diameters, and centerline length against the removed part before installation. Inspect hose clamps, necks, and adjacent cooling components for wear or corrosion, and replace any damaged sealing surfaces before refilling the system. After installation, refill and bleed the cooling system according to the vehicle service procedure.

Quality Assurance

Gates manufactures molded coolant hoses to OEM-quality specifications for the listed applications. The Gates 23929 is built as a direct-fit replacement for confirmed Toyota fitments, including Toyota Tacoma, Toyota 4Runner, and Toyota Hilux upper radiator hose service.