This Jayrad JR8131J radiator steps in when the original Triton or Pajero core from 1989 to 1991 has blocked fins or leaks and the engine temp needle climbs on hills. The core sits at 400 mm high and 602 mm wide, so it lines up with factory shrouds and fans. The built-in transmission cooler keeps auto gearbox fluid flowing through the same unit, trimming down extra plumbing in the bay. The brass copper crossflow core sits at 30 mm thick, giving stable heat transfer without crowding other gear. The necks run 35 mm on both inlet and outlet, matching common hose sizes used on these Mitsubishis. The setup suits Aussie conditions where slow climbs, towing and hot days keep the cooling system working. If your old radiator is past it, this replacement is a smart buy that matches known factory-style dimensions.

• Suits Mitsubishi Triton 1989–1991 automatic models
• Suits Mitsubishi Pajero 1989–1991 automatic models
• Brass copper crossflow radiator core construction
• Core height: 400 mm for factory-style fit
• Core width: 602 mm for strong airflow coverage
• Core thickness: 30 mm balances cooling and space
• Integrated transmission cooler for auto gearboxes
• Inlet neck diameter: 35 mm
• Outlet neck diameter: 35 mm
• Direct replacement-style unit for ageing factory radiator

Q: Does this radiator include an integrated transmission cooler?

Yes, this radiator includes an integrated transmission cooler suited to automatic transmissions. The cooler sits in the lower tank and uses dedicated ports for transmission fluid lines. This keeps the gearbox oil passing through the same heat exchanger as the coolant. It helps maintain consistent transmission temperatures on long drives and towing work.

Q: What are the core dimensions of the JR8131J radiator?

The core measures 400 mm high, 602 mm wide and 30 mm thick. These dimensions help confirm compatibility with your existing fan shroud and mounts. Measuring the old radiator before ordering is a smart move. Matching height, width and thickness reduces the chance of clearance issues in the engine bay.

Q: What hose sizes does this radiator suit?

The radiator uses 35 mm inlet and 35 mm outlet neck diameters. This matches the common hose sizes used on compatible Mitsubishi Triton and Pajero engines from this era. Always compare your current hoses or measure the existing radiator necks. Correct hose sizing helps prevent leaks and makes clamping more reliable.

Q: Is this radiator suitable for heavy towing conditions?

This radiator uses a 30 mm thick brass copper core with an integrated transmission cooler, which supports consistent cooling under load. Your overall towing performance will still depend on vehicle condition, fan operation and coolant quality. Keeping the cooling system serviced and the fins clear of debris will help this unit perform at its best on long tows.

Suits Mitsubishi Triton and Mitsubishi Pajero models built between 1989 and 1991 with automatic transmission.

Includes integrated transmission oil cooler so no separate cooler is required for standard automatic setups.

Professional installation is recommended to manage coolant bleeding, hose routing and transmission line connections.

Always confirm core dimensions of 400 mm x 602 mm x 30 mm and 35 mm hose diameters against your original radiator before fitment.