This Jayrad radiator JR6339J keeps the 2.7 litre diesel in your Navara D21 or WD21 Pathfinder in the right temperature window with a 430 mm high core and 645 mm width. The 25 mm core thickness gives enough coolant volume for low range climbs and slow sand work. The 36 mm inlet and outlet necks line up with standard hoses so you can swap the old unit without chasing odd fittings. The core size matches the front opening on these Nissans so airflow stays consistent when you load the bar work and lights on. An integrated trans cooler section is built into the tank for compatible setups so the driveline temps stay under control on long tows. The simple cross-flow style suits Aussie heat and stop-start traffic so you can get out there without worrying about needle creep.

• Suits Nissan Navara D21 2.7L diesel and WD21 Pathfinder manual transmission
• Core height of 430 mm for strong frontal coverage
• Core width of 645 mm to maximise airflow through the grille
• 25 mm core thickness providing balanced coolant capacity
• 36 mm inlet diameter for matching upper hose fitment
• 36 mm outlet diameter for matching lower hose fitment
• Features an integrated transmission cooler for compatible setups
• Jayrad branded replacement radiator for performance cooling
• Category placement in 4x4 & Touring Performance Parts Radiators
• Ideal for replacing tired or leaking factory radiator units

Q: Does this radiator fit all Nissan Navara D21 2.7L diesel models?

It suits Navara D21 and WD21 Pathfinder models with 2.7L diesel and manual transmission where the factory radiator matches the 430 mm x 645 mm core size. Measure your existing core height and width before ordering to confirm. Also check that your hose diameters are 36 mm for both inlet and outlet. If dimensions differ, this unit may not be suitable.

Q: What hose size does this radiator use?

This radiator uses 36 mm inlet and 36 mm outlet necks. You should confirm your current upper and lower radiator hoses match this 36 mm size at the radiator ends. If your hoses are worn or swollen, consider replacing them at the same time. Correct sizing helps maintain coolant pressure and reduces the risk of leaks.

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

Yes, the specification notes an integrated transmission cooler. This cooler sits within the radiator tank and uses dedicated ports for transmission fluid lines. Always ensure the transmission lines are properly reconnected and leak tested after installation. Use new sealing washers or fittings if the old ones show damage or wear.

Q: Can I install this radiator at home or should a workshop do it?

A workshop installation is recommended. Radiator replacement on these vehicles involves draining coolant, removing shrouds and hoses, and correctly bleeding air from the system. Incorrect installation can cause overheating or coolant loss. A qualified mechanic can also pressure test the system and check for underlying issues.

Suitable for Nissan Navara D21 with 2.7L diesel engine and WD21 Pathfinder variants with manual transmission. Check the existing radiator core height of 430 mm and width of 645 mm to confirm match with this unit. Confirm inlet and outlet hose size of 36 mm before installation. Professional installation is recommended to ensure correct coolant flow and trans cooler connection where fitted.