Gates 12501 HVAC Heater Hose - Oil Cooler To Thermo Valve

Gates Molded Heater Hose for Nissan Sentra

The Gates 12501 molded heater hose is a factory-molded, OEM-style coolant hose built for tight engine compartments where a straight hose will not route correctly. It is made from EPDM and is suitable for coolant, water, and air service, with marine application approval.

For 2013-2018 Nissan Sentra models, this molded hose supports the oil cooler to thermo valve connection and follows the original routing for a cleaner, more accurate replacement. The Gates Molded Heater Hose line focuses on formed hose shapes that match compact underhood layouts.

Key Features

• Brand: Gates
• Part number: 12501
• OEM-style molded hose shape for tight engine bay routing
• EPDM construction for coolant, water, and air applications
• Approved for marine applications
• End 1 inside diameter: 0.5 in. / 13 mm
• End 2 inside diameter: 0.5 in. / 13 mm
• Centerline length: 12.2 in. / 310 mm

Detailed Description

Gates 12501 is a molded heater hose from the Gates Molded Heater Hose product line, built to replace formed coolant hoses in smaller, tighter-fitting engine compartments. Its molded profile helps maintain the original hose path, which is important on vehicles where space around the engine is limited. This part number is a direct fit for 2013-2018 Nissan Sentra oil cooler to thermo valve routing, making it a practical choice when replacing a worn or damaged hose on that application.

The EPDM material is commonly used in cooling-system service because it handles heat and fluid exposure well. With 0.5-inch ends on both sides and a 12.2-inch centerline length, Gates 12501 is sized for the specified connection and supports clean hose routing in the Nissan Sentra cooling circuit. This part cross-references OSC 13501 for the same application.

What It Helps Fix

• Coolant leaks from a cracked or deteriorated molded hose
• Improper routing caused by a straight hose in a formed-hose location
• Heat-related hose softening or swelling
• Restricted coolant flow from a collapsed or damaged hose section
• Service issues on the oil cooler to thermo valve line in Nissan Sentra models

Installation Notes and Tips

Verify the hose path, end diameters, and centerline length before installation. This Gates 12501 hose is specified for the oil cooler to thermo valve position on 2013-2018 Nissan Sentra, so match the original routing and connection points during replacement. Inspect adjoining clamps, fittings, and nearby hoses for wear before reassembly.

Quality Assurance

Gates manufactures this molded heater hose as an OEM-style replacement for the specified application. The EPDM construction and factory-molded shape support consistent fitment in compact engine compartments.