This Koyorad radiator slots into a Nissan X-Trail T31 2.0L diesel auto with a core size of 452 mm high by 686 mm wide, so it matches the space behind the grille without messing around. You get a 25 mm thick core and a built in trans cooler, so the engine and auto stay looked after when you tackle long hills or sit on the highway for hours. The alloy core and plastic tanks keep weight down but still handle normal cooling system pressure, which is what you want once the temps spike in a slow convoy. Inlet and outlet stubs both sit at 35 mm, so factory hoses clamp straight on without hunting for odd fittings. It is a smart buy if you want fresh cooling gear before the next big run and prefer proven dimensions over guesswork.

• Suits Nissan X-Trail T31 2.0L diesel automatic models
• Compatible with vehicles built from 10/2007 to 2013
• Core height measures 452 mm for ample cooling area
• Core width measures 686 mm to match factory shroud
• Core thickness of 25 mm for correct engine bay clearance
• 35 mm inlet diameter suits standard upper radiator hose
• 35 mm outlet diameter suits standard lower radiator hose
• Integrated transmission cooler supports automatic gearbox temperatures
• Direct replacement style radiator for factory unit
• Ideal for maintaining cooling performance on touring and towing setups

Q: Does this radiator fit all Nissan X-Trail T31 models?

No, it suits 2.0L diesel automatic T31 models from 10/2007 to 2013. Petrol engines and manual gearboxes often run different radiator dimensions and fittings, so this unit will not line up correctly. Always match engine type, transmission, and build date before ordering. If your compliance plate or rego papers do not show 2.0L diesel auto, this is not the right gear.

Q: Does this radiator include an integrated transmission cooler?

Yes, this radiator includes an integrated transmission cooler for the automatic transmission. The cooler uses dedicated ports in the tank for transmission fluid lines. This keeps fluid temperatures in check under load and towing. You will need to reconnect the existing hard lines or hoses to these ports during install.

Q: What hose size does this radiator use for coolant connections?

Both the inlet and outlet use 35 mm hose connections. This matches the standard hose size on compatible T31 diesel automatic models. Reusing existing hoses in good condition is usually fine as they will slip over the 35 mm stubs. If hoses are cracked or soft, it is a good time to replace them with the correct 35 mm size.

Q: Can I install this radiator myself at home?

Home installation is possible for experienced DIY mechanics with the right tools. The job involves draining coolant, disconnecting 35 mm hoses, and detaching transmission cooler lines. Careful bleeding of the cooling system is important to avoid air pockets. If you are unsure about handling auto trans lines or coolant purging, a workshop install is the safer option.

• Suits Nissan X-Trail T31 2.0L diesel automatic models built between 10/2007 and 2013
• Direct replacement radiator for factory unit on T31 automatic diesel
• Includes integrated transmission cooler suitable for automatic transmission fluid circuits
• Professional installation recommended to ensure correct coolant bleeding and transmission line reconnection