Radiator Honda TRX 450ER 450R Replacement 2006 2007 2008 2009 2014 Aluminum Core TIG Welded Tanks

This aftermarket replacement radiator is built for Honda TRX 450ER and TRX 450R models from 2006 through 2009 and the 2014 variant. It directly replaces the OEM 19010-HP1-305, providing a robust aluminum core and TIG-welded tanks designed to stand up to dusty trails and hard farm use. Specifically engineered to restore reliable cooling, it helps prevent overheating during long rides and work sessions, keeping the engine running at optimal temperatures.

Designed for durability and easy serviceability, this radiator uses a 2-row aluminum core with precision fabrication for improved heat transfer and long-term resilience in off-road conditions. The direct-fit design ensures mounting points align with the original hardware, simplifying installation and reducing the chance of fitment issues on the trail or at the barn. This aftermarket replacement is built to endure the punishment of off-road riding while maintaining efficient coolant flow and corrosion resistance.

Comprehensive Vehicle Fitment

Product Specifications

OEM & Aftermarket Cross-Reference Information

What's Included

A single rugged radiator assembly ready for installation.

• Radiator Assembly

Note: Radiator cap, hoses, clamps, and fan shroud are not included.

Why Choose This Aftermarket Replacement?

• Direct-Fit Compatibility: Designed to bolt onto the original mounting points without modification, preserving factory fit and function.
• OEM Cross-Reference: Replaces the OEM 19010-HP1-305 with a reliable aftermarket alternative.
• Premium Materials: 6061-T6 aluminum core and TIG-welded tanks deliver superior durability and corrosion resistance in off-road environments.
• Enhanced Cooling Performance: Two-row aluminum core and thicker core geometry improve heat transfer, helping prevent boil-overs on hot days or during heavy workloads.
• Rugged Construction: Robust mounting lugs and precision fabrication resist impact and vibration from rough terrain.
• Proven Off-Road Reliability: Engineered for trail and farm use where cooling demands are high and reliability matters most.

Installation Notes:

• Drain the cooling system before removal of the existing radiator to avoid coolant loss and spills.
• Disconnect the lower and upper radiator hoses, as well as the fan connector if applicable; remove the shroud carefully to access mounting bolts.
• Inspect mounting points and all fastener threads; replace any bent brackets and use new bolts if required to ensure a secure, even mounting.
• Align the radiator with the stock mounting holes, then snug bolts first and progressively torques to the OEM spec or manufacturer’s guidance to avoid warping the tanks.
• Reattach hoses with new clamps and check for proper inlet/outlet orientation to prevent misrouting and leaks.
• Bleed the cooling system after refilling; run the engine with the cap off until you see steady bubbling stop, then top up to the recommended level.

Why Upgrade?

Running a worn or damaged radiator raises the risk of coolant leaks, reduced flow, and overheating under heavy use. This aftermarket replacement restores reliable cooling performance, reduces the chance of boil-overs, and supports consistent engine temps even during demanding rides or chores. Replacing the radiator with a robust, aluminum core unit helps protect the engine from heat-related damage and extends overall reliability the next time you hit the trail or worksite.