This Koyorad radiator with a 390 mm high and 686 mm wide core keeps the Subaru Forester SK 2.5L running cool when you tackle long climbs or slow technical tracks. The 16 mm core thickness sits close to factory size, so fans and shrouds still line up properly. A built-in transmission cooler suits the automatic models, taking some heat out of the box when you get out there with a loaded wagon. The inlet and outlet necks at 39 mm diameter line up with standard hoses, which keeps the setup simple and avoids chasing odd fittings. The footprint matches the SK Forester mounts from 09/2018-on, so it slides into the same support panel without strange gaps. Those core measurements give enough frontal area for steady coolant temperatures across highway runs, weekend trips and everyday driving in hot Aussie conditions, which makes this a smart buy for long-term ownership.

• Suits Subaru Forester SK 2.5L FB25A automatic from 09/2018-onwards
• Koyorad brand radiator for direct replacement use
• Core height of 390 mm for ample frontal coverage
• Core width of 686 mm to maximise cooling area
• Slim 16 mm core thickness maintains fan and shroud clearance
• 39 mm inlet neck sized for factory upper hose
• 39 mm outlet neck sized for factory lower hose
• Integrated transmission cooler tailored to automatic models
• Purpose-built for 4x4 and touring use in Subaru Forester SK
• Ideal for maintaining stable coolant temperatures under highway and towing loads

Q: Does this radiator suit manual Forester SK models?

This radiator is specified for automatic Subaru Forester SK 2.5L FB25A models. The built-in transmission cooler is designed around the auto gearbox lines and flow. Manual models often use a different part number or cooler layout. Always match against your VIN or existing radiator markings before ordering so the mounts and hose positions line up.

Q: What engine code does this radiator fit?

This radiator suits the 2.5L FB25A engine in the Subaru Forester SK. That FB25A code covers the current generation petrol four-cylinder used from 09/2018-onward. Matching the engine code prevents issues with hose diameter or core size. Check your build plate or service book to confirm the FB25A listing before fitting.

Q: What are the main core dimensions I should check?

The key dimensions are a core height of 390 mm, width of 686 mm and thickness of 16 mm. These measurements refer to the finned core area between the tanks, not the overall frame. Comparing these dimensions with your current unit helps confirm physical compatibility. Small differences can affect fan shroud fit and mounting hole alignment.

Q: Does this radiator include a built-in transmission cooler?

Yes, this radiator includes an integrated transmission cooler for automatic Forester SK models. The cooler passages sit within the main tank section, so you reuse the factory transmission lines. Keeping the fluid flowing through this cooler helps manage gearbox temperature on long highway runs. That can support long-term transmission durability when towing or touring.

Suitable for Subaru Forester SK with 2.5L FB25A engine and automatic transmission built from 09/2018 onwards.