The Koyorad radiator for Subaru Forester SJ XT uses a core height of 342 mm and width of 686 mm so your cooling system stays in the same footprint as factory gear. The 25 mm core thickness keeps coolant temps in check on long highway climbs without overloading the fan setup. The 39.5 mm inlet and outlet suit the standard hoses on 2013-on S4 Foresters so you can keep your existing pipework and clamps. This radiator steps in as a straight-dimension swap for SJ XT models running either auto or manual gearboxes with the correct transmission cooler layout. The 25 mm core thickness balances heat rejection and warm-up time for real Aussie conditions from coastal humidity to inland heat. The 686 mm wide face works well with the Forester grille opening so airflow from the factory fans is used properly. The 342 mm height lines up with stock mounts for a smart buy replacement.

• Suits Subaru Forester SJ XT 2013-on S4
• Compatible with both automatic and manual variants
• Core height measures 342 mm
• Core width spans 686 mm for cooling area
• Core thickness is 25 mm
• Inlet and outlet diameters are 39.5 mm
• Integrated transmission cooler for suitable autos
• Direct-style replacement using factory-style mounts
• Matches OEM-style hose sizing and layout
• Suitable for touring, towing and daily driving temperatures

Q: Does this radiator fit non-XT Subaru Forester SJ models?

This radiator is specified for Subaru Forester SJ XT models from 2013-on. Non-XT variants may run different radiator part numbers or hose layouts. Always compare core size and hose diameters against your original unit. If part numbers or dimensions differ, speak with our crew before ordering.

Q: Is the transmission cooler inside this radiator suitable for CVT gearboxes?

This radiator includes an integrated transmission cooler for compatible automatic setups. Subaru used different automatic and CVT configurations across the SJ range. Before purchase, confirm your gearbox type and check the cooler line positions against your existing radiator. A mechanic or Subaru specialist can confirm compatibility.

Q: Do I need new hoses when installing this radiator?

You can reuse existing hoses if they match the 39.5 mm inlet and outlet and are in good condition. Many owners choose to replace old hoses while the system is apart to reduce future leak risks. Cracked, swollen or hardened hoses should be replaced. Fresh clamps are also a simple upgrade at this stage.

Q: How often should I change coolant with a new radiator installed?

Coolant change intervals follow the vehicle service schedule supplied by Subaru. When you fit a new radiator, it is standard practice to refill with fresh coolant at the correct specification. Sticking with the right mix ratio helps protect the new core from corrosion. Regular changes also keep internal passages clear for consistent cooling.

Suitable for Subaru Forester SJ XT S4 models from 2013-onwards with automatic or manual transmissions. Fitment requires removal of the original radiator and transfer of factory hoses, fans and mounts. Professional installation is recommended due to coolant handling and transmission cooler line connections. Confirm core dimensions and hose diameters match the original unit before installation.