Cummins Engine Oil Cooler

OE 4965870

Aftermarket replacement for B2B importers, distributors, wholesalers and private-label programs.

Product category: Oil Coolers
Brand application: Cummins
OE references: 4965870
Application: Cummins heavy-duty applications · 10-layer core

Confirm final specification and application before ordering.

PRODUCT OVERVIEW

ABOUT THIS OIL COOLER.

The TRUPA Cummins Engine Oil Cooler is an aftermarket replacement oil cooler referenced to OE number 4965870. It is listed for Cummins heavy-duty applications · 10-layer core. TRUPA supplies it to importers, distributors, wholesalers and private-label programs, with China export supply and partner-warehouse support in the USA and Brazil for eligible orders.

WHAT IT DOES

An engine oil cooler transfers heat from the lubricating oil into the engine coolant, keeping oil viscosity and film strength within limits under heavy load. On most heavy-duty diesels it is a stacked-plate or tube-bundle core mounted on the block, with oil and coolant passing through separate sealed channels.

APPLICATION & FITMENT

Listed for Cummins heavy-duty applications · 10-layer core. More parts for Cummins.

OE & INTERCHANGE NUMBERS

4965870

BEFORE YOU ORDER

Full OE number from the old cooler or parts book
Engine model and serial number (ESN)
Plate count / core length if the part has been superseded
Whether gaskets and O-rings are required with the core

COMMON REPLACEMENT SIGNS

Oil present in the coolant, or coolant in the oil (milky oil)
Rising oil temperature or low oil pressure under load
External oil or coolant leaks at the cooler housing or gaskets
Blocked core after an engine failure, leaving debris in the oil circuit

Read the troubleshooting guide →

QUALITY CHECKS

Replacement cores should be pressure- and leak-tested on both the oil and coolant sides, with brazed joints and flange flatness checked so the unit seals first time. How TRUPA approaches quality control.

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