Gates 51531 Radiator Coolant Hose - Lower

Reliable Radiator Coolant Hose for Lexus NX300h and Toyota RAV4

The Gates Molded Coolant Hose 51531 is engineered to provide dependable cooling system performance for Lexus NX300h and Toyota RAV4 models. Designed with durable EPDM material and precise molded construction, this radiator coolant hose ensures a secure fit and long-lasting service.

• Constructed from high-quality EPDM material for heat and chemical resistance
• Molded design for exact fit and reliable sealing
• End 1 inside diameter: 1.31 inches (33 mm)
• End 2 inside diameter: 1.44 inches (37 mm)
• Centerline length: 12.51 inches (318 mm)
• Contains no internal spring, reducing potential failure points
• Compatible with Lexus NX300h and Toyota RAV4 cooling systems

About the Gates Molded Coolant Hose Product Line

The Molded Coolant Hose line by Gates focuses on precision-molded hoses designed to meet exact OEM specifications. These hoses are manufactured to provide consistent dimensions and reliable performance in automotive cooling systems. The molded construction of the 51531 hose ensures a secure connection and reduces the risk of leaks or hose deformation under pressure.

Product Details and Specifications

This radiator coolant hose is made from EPDM, a synthetic rubber known for its excellent resistance to heat, ozone, and coolant chemicals. The hose features two different inside diameters at each end—1.31 inches (33 mm) and 1.44 inches (37 mm)—to accommodate specific radiator and engine connections. With a centerline length of 12.51 inches (318 mm), it fits precisely within the cooling system layout of the Lexus NX300h and Toyota RAV4. The absence of an internal spring enhances durability by eliminating potential weak points.

Common Applications and Problem Solving

• Replacement of worn or cracked radiator coolant hoses in Lexus NX300h and Toyota RAV4
• Prevention of coolant leaks caused by hose degradation or improper fit
• Restoration of proper coolant flow to maintain engine temperature regulation
• Addressing hose swelling or softening due to heat exposure
• Eliminating coolant contamination from hose material breakdown

Installation Notes and Tips

Ensure the cooling system is fully depressurized and cooled before removing the old hose. Verify the hose orientation matches the original routing to avoid kinks or stress points. Use appropriate clamps to secure the hose ends firmly without over-tightening, which can damage the hose. Inspect connecting fittings for corrosion or damage prior to installation.

Quality Assurance and Warranty

The Gates Molded Coolant Hose 51531 is manufactured to meet stringent quality standards for automotive cooling components. Made from EPDM material and molded to precise dimensions, it offers reliable performance consistent with OEM requirements. While specific warranty details are not provided, Gates products typically adhere to industry standards for durability and fitment.