Gates 12148 HVAC Heater Hose

Gates Molded Heater Hose for Toyota and Lexus

The Gates Molded Heater Hose, part number 12148, is a factory-molded EPDM coolant hose built for tight engine bays and OE-style routing. It is made for coolant, water, and air service, and it is also approved for marine applications.

Key Features

• Gates Molded Heater Hose product line for OEM-style fit and routing
• EPDM construction for coolant and heater hose service
• Factory-molded shape for smaller, tighter-fitting engine compartments
• End 1 inside diameter: 0.95 in. (24 mm)
• End 2 inside diameter: 0.95 in. (24 mm)
• Centerline length: 9.46 in. (240 mm)
• Compatible with coolant, water, and air applications
• Approved for marine applications

Detailed Description

This Gates 12148 molded coolant hose is built to match the routing needs of vehicles that use a shaped heater hose rather than a straight universal hose. The molded EPDM construction helps it follow the original path in compact engine compartments, which is important for Toyota Camry, Toyota Avalon, and Lexus ES300 heater hose service where clearance and routing matter. This part number 12148 is also listed for Toyota Highlander, Toyota Solara, Lexus RX300, Lexus RX330, and Toyota Sienna applications.

This part cross-references Bosch 13148 for the same application.

What It Is Used For

• Replacing a leaking or cracked heater hose in the cooling system
• Restoring proper coolant flow between heater and engine components
• Addressing hose routing issues in tight engine compartments
• Replacing a hose that has softened, hardened, or split from age and heat
• Servicing Toyota Camry, Lexus ES300, and related Toyota/Lexus cooling system layouts

Installation Notes and Tips

Verify end diameters and centerline length before installation to confirm routing and fitment. This molded hose is listed for 2001-2010 Toyota Highlander, 2001-2008 Toyota Solara, 2004-2006 Lexus RX330, 1994-2006 Toyota Camry, 2005 Toyota Sienna at the water outlet to thermostat housing, 1995-2004 Toyota Avalon, 1994-2003 Lexus ES300, 1999-2003 Lexus RX300, 2002-2003 Toyota Sienna, and 1998-2001 Toyota Sienna. Match the molded shape to the original hose path to avoid kinks or tension at the connections.

Quality Assurance

Gates is known for OE-style molded hose construction, and this heater hose follows that approach with a factory-molded profile and EPDM material selection for cooling-system service.