Gates 23284 Radiator Coolant Hose - Lower

Gates 23284 Molded Coolant Hose

The Gates 23284 molded coolant hose is a direct-fit radiator coolant hose for select Toyota Sienna applications. Built from EPDM rubber and formed to OEM-style dimensions, it supports reliable coolant routing in the lower hose position.

For 2007-2010 Toyota Sienna lower hose replacement, this molded hose follows the original routing and connection sizes for a cleaner fit than universal hose stock. Gates 23284 is part of the Molded Coolant Hose line, which covers upper, lower, bypass, heater, and other coolant applications with OE-style specifications.

Key Features

• EPDM construction for coolant-system service
• Molded shape for the lower radiator hose path
• End 1 inside diameter: 1.3 in. (33 mm)
• End 2 inside diameter: 1.45 in. (37 mm)
• Centerline length: 19.9 in. (505 mm)
• No spring, no modular hose sections, and no quick-connect fittings
• Direct replacement for Gates 23284

Detailed Description

Gates 23284 is a molded radiator coolant hose engineered for the lower cooling circuit on 2007-2010 Toyota Sienna models. The EPDM rubber construction is suited for coolant exposure and the molded profile helps maintain the factory hose route, which is important for proper clearance and consistent coolant flow. This part number is also referenced in the Gates Molded Coolant Hose line, a range built around OE-style replacement dimensions for common cooling-system service.

This part cross-references Bosch 66084 and Dayco 72469 for the same application. If you are replacing a worn, cracked, or softened lower hose on a Toyota Sienna, Gates 23284 provides the correct molded shape and connection sizing for the listed vehicles.

What It Helps Fix

• Coolant leaks from a cracked lower radiator hose
• Softening, swelling, or collapse of the hose under heat
• Improper hose routing after a previous repair
• Loss of coolant from aged rubber connections
• Cooling-system service on 2007-2010 Toyota Sienna lower hose applications

Installation Notes and Tips

Confirm the hose position and end diameters before installation. Drain the cooling system as needed, inspect the mating necks for corrosion or damage, and replace any clamps that no longer hold securely. After installation, refill with the correct coolant and check for leaks once the engine reaches operating temperature.

Quality Assurance

Gates manufactures this molded coolant hose to OEM-quality specifications for the listed application. The molded construction and application-specific dimensions support a proper replacement for 2007-2010 Toyota Sienna lower radiator hose service.