説明
4-d31/ 4d32 engine oil cooler for Komatsu
Looking for a 4d31/ 4d32 engine oil cooler for Komatsu? This is an aftermarket replacement built to the original equipment drawing — same mounting interface, same fitment geometry, no rework required at installation.
Why this part fails — and what we do differently
Heat rejection is a function of core surface area and airflow — both are easy to get wrong on a 4d31/ 4d32 engine oil cooler. We build to the original core specification for Komatsu machines and pressure-test every unit. A core that is 10% undersized holds temperature on a cool day and cooks the engine in summer.
Ordering, packing and warranty
We ship single units worldwide and consolidate full containers for distributors. Every 4d31/ 4d32 engine oil cooler is individually boxed and labelled with its part number, and pre-shipment photos and dimensional checks are provided as standard. Warranty against manufacturing defect: 6–12 months depending on the part category.





