HPD Transmission Cooler Kit — Suitable for Isuzu D-Max / MU-X (Auto 2012–2020, 300×200)

HPD's oil-to-air transmission cooler kit keeps automatic transmission temperatures stable under heavy towing and load, where factory heat-exchanger or in-radiator cooling can struggle and risk mixing engine coolant with transmission fluid. Fitting it reduces and stabilises transmission oil temperatures, lowers engine coolant temperatures, prolongs oil life and helps protect one of the vehicle's most expensive components.

The kit uses a bar-and-plate core measuring 300×200×50mm with CNC-machined end tanks and laser-cut stainless steel mounting brackets, designed for high airflow and good ground clearance to suit winch-fitted vehicles. It comes complete with the cooler, billet adaptor plate, 10mm oil hoses, hose-tail fittings, support clamps, insulation and all hardware and instructions; installation by a qualified mechanic is recommended.