Part Number: 4I7502 (Caterpillar reference 4I-7502)
Type: Oil cooler core - core only, no tanks or frame
Function: Holds oil at working temperature, separate from the engine coolant circuit
Weight: 88.0 lbs.
Condition: Aftermarket replacement part
Application: Replaces the oil cooler core on Caterpillar 320 L and 320N excavators, including the A Series variants, and the 3116 industrial engine
Shipping Restrictions: Ships to the lower 48 US states only
Note: This is an OIL COOLER core, not a radiator core - Caterpillar's own description says so, though its title reads only CORE A. Caterpillar publishes NO specification for this part at all: no dimensions, no material. Measure and compare the core being removed before ordering. Tanks, lines and hardware are not included. Ships LTL freight.
Common Use Case or Symptoms:
Fit this when a 320 or 320N runs hot on oil while the coolant gauge stays put, or when the cooler is seeping and the fins have packed solid - an oil cooler failure shows up as sluggish hydraulics in the afternoon long before anything overheats.
Why Choose Broken Tractor?
✅ Four A Series Variants Added: Caterpillar covers the 320-A, 320-A L, 320-A N and 320-A S under this number alongside the 320 L and 320N.
✅ Engine And Machine Both: Catalogued against the 3116 industrial engine as well as the excavators, so it turns up on a power unit as readily as a machine.
✅ Spec Gap Stated Openly: Caterpillar publishes nothing for this number beyond the machine list, and the listing says so rather than borrowing figures from a similar core.
$1,299.00/ea
Shipping calculated at checkout. If any item in your order is temporarily unavailable, we'll contact you to arrange a back-order or refund — whichever you prefer.
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