The Koyorad radiator slots into Toyota Hilux KUN16 and KUN26R 3.0L turbo diesel manuals from 2005 on, using a 27 mm core where the original gear matches that size. With a 525 mm high and 655 mm wide core, it moves plenty of heat away when you load the tray or tow. Matching 38 mm inlet and outlet necks keep hose swaps simple, so you can get out there again without reworking the whole cooling setup. Inside the tanks you get an integrated transmission cooler section built into the same 525 mm by 655 mm footprint, so lines hook up where you expect them. The 27 mm core thickness sits well behind most bull bars and driving light setups, which matters when airflow is already tight. An 8 mm breather port helps you bleed trapped air after a flush, keeping temps more stable when you tackle steep low-range tracks in summer.

• Suits Toyota Hilux 3.0L T/D manual from 2005-on
• Fits KUN16 and KUN26R chassis variants
• Core height measures 525 mm
• Core width measures 655 mm
• Core thickness is 27 mm (not 16 mm)
• Inlet and outlet necks both 38 mm diameter
• Breather connection uses 8 mm diameter fitting
• Integrated transmission cooler built into tank
• Direct replacement style radiator assembly
• Suitable where factory radiator matches 27 mm core thickness

Q: Does this radiator fit automatic transmission Hilux models?

This radiator is specified for manual transmission 3.0L turbo diesel Hilux models. The tank layout and cooler arrangement are set up around that configuration, so auto models may use a different core or cooler style. Always match the part number and core thickness with the radiator removed from the vehicle. When in doubt, confirm compatibility with your VIN before ordering.

Q: How can I confirm my Hilux uses the 27 mm core and not the 16 mm version?

The surest way is to measure the original radiator core thickness. Remove the fan shroud if needed and measure only the finned core section, not the tanks, which should be around 27 mm or 16 mm. You can also cross-check your existing part number with a parts catalogue. Matching thickness is critical for correct mounting and fan shroud alignment.

Q: Is the transmission cooler inside this radiator suitable for heavy towing?

This radiator includes an integrated transmission cooler built into the end tank. It is intended to match the factory-style cooling capacity for standard towing loads specified by the vehicle manufacturer. Some owners who tow at maximum capacity for long periods may choose to run an additional external cooler in series. Any extra cooler setup should follow professional plumbing and mounting practices.

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

The inlet and outlet necks on this radiator are 38 mm, which matches the listed hose size. If your existing hoses are in good condition and match that size, they can often be reused. Many owners still choose to replace old hoses while the system is open to avoid future leaks. Always inspect for cracks, soft spots, and swelling before refitting.

Suits Toyota Hilux 3.0L turbo diesel manual models from 2005-on coded KUN16 and KUN26R with a 27 mm thick radiator core not the 16 mm version. Fitment requires matching the 38 mm inlet and 38 mm outlet hose sizes and 8 mm breather connection to the existing cooling system. Installation replaces the factory radiator unit and connects to the existing transmission cooler lines where fitted. Check mounting points and shroud alignment against the original radiator before final installation.