Polaris Ranger Radiator Replacement for 400 500 570 700 800 900 Diesel M1400 Gas UTV

This radiator is a direct aftermarket replacement designed to restore and improve cooling for Polaris Ranger UTVs, specifically covering Ranger 400/500/570/700/800 series and the Ranger 900 Diesel, including M1400 Gas variants. It’s engineered to drop into the OEM layout, delivering reliable heat transfer, resistive cooling under load, and a straightforward install for hardworking trails or farm work. Replacing the worn unit helps prevent overheating, coolant loss, and performance dips when you push your Ranger through tough terrain.

Built with all-aluminum construction and a precision TIG-welded core, this replacement radiator delivers improved durability and heat dissipation compared to worn, OEM-era radiators. The included cap and cross-reference to the OEM numbers ensure a familiar fit with minimal modification, helping you get back on the job quickly and with confidence in long-haul reliability for trail riding or field duty.

Comprehensive Vehicle Fitment

Note: Fitment data drawn from OEM cross-reference catalogs and aftermarket supplier listings for 1240527, 1240528, 1240720, 1240721 variants.

Product Specifications

OEM & Aftermarket Cross-Reference Information

What’s Included

What’s included in the box:

• Radiator Assembly (all-aluminum core and polished tanks)
• Pressure Cap (included with this unit in select listings)
• Warranty Card (1-year coverage where available)

Not included: hoses, mounting hardware, clamps, and fan shroud unless explicitly stated by the seller.

Why Choose This Aftermarket Replacement?

• Direct-Fit Compatibility: Designed to bolt to OEM mounting points without modification, restoring proper mounting alignment and airflow.
• OEM Cross-Reference: Cross-references 1240527/1240528/1240720/1240721 ensure you match the right replacement for your Ranger model and engine variant.
• Premium Materials: All-aluminum construction with TIG-welded tanks delivers superior heat transfer, corrosion resistance, and durability in rugged environments.
• Enhanced Cooling Performance: 2-row core with optimized fin density improves cooling capacity under high-load conditions common on trails and farms.
• Cap Included & Leak Tested: Includes pressure cap and factory leak-testing to minimize the chance of early failures.
• Warranty & Support: 12-month coverage on manufacturing defects, providing peace of mind after install.

Installation Notes:

• Verify OEM numbers before ordering to ensure correct fitment for your Ranger model and year.
• Drain the cooling system and disconnect hoses before removing the old radiator; inspect hoses and clamps for wear and replace as needed.
• Clean mounting surfaces and check mounting brackets for cracks or deformation; replace any damaged hardware to ensure a solid mount.
• Install the new radiator with the cap seated and hoses secured with new clamps; avoid overtightening clamps to prevent hose damage.
• Bleed the cooling system after reassembly to remove air pockets; run the engine with the radiator cap off briefly and watch for bubbles or pressure buildup.
• Inspect for leaks after the first test drive; check for clearance with the fan and shroud to prevent contact during operation.

Why Upgrade?

Running a worn radiator increases the risk of overheating, coolant loss, and engine damage under demanding conditions. This aftermarket replacement restores cooling efficiency, maintains consistent engine temperatures, and keeps your Polaris Ranger reliable when you’re on the trail or working the property. With proper install, you’ll regain the confidence and performance you expect from your Ranger in challenging environments.