Part Number: 1516458 (Caterpillar reference 151-6458)
Type: Hydraulic oil cooler core - core only, no tanks or frame
Function: Sheds heat from the hydraulic circuit through tightly packed parallel tubes and fins, separate from the engine coolant system
Dimensions: 981 mm long
Material: Alloy aluminium
Weight: 145.0 lbs.
Condition: Aftermarket replacement part
Application: Replaces the hydraulic oil cooler core on the Caterpillar 330B L excavator
Shipping Restrictions: Ships to the lower 48 US states only
Note: This is the HYDRAULIC OIL cooler core, not the engine radiator core - Caterpillar names it specifically as a hydraulic oil cooler. Tanks, side frames, lines and hardware are not included. Caterpillar publishes only the 981 mm length; measure the core being removed before ordering. At 145 lbs this ships LTL freight; inspect fins and tube ends on arrival.
Common Use Case or Symptoms:
Order this when a 330B L slows down and gets hot late in a dig cycle, when hydraulic oil temperature climbs while coolant stays normal, or when the cooler is weeping oil into the pack - on an excavator this size the hydraulics make more heat than the engine does, and this is the part that carries it away.
Why Choose Broken Tractor?
✅ Hydraulic Circuit Not Coolant: Caterpillar names this specifically a hydraulic oil cooler core - oil temperature and coolant temperature are separate complaints with separate parts.
✅ Aluminium Construction: Alloy aluminium as Caterpillar built it, which is lighter than a copper core of the same face area but repairs differently.
✅ Largest Cooler In The Section: 145 lbs and 981 mm of core, the biggest single cooling element in this catalog - sized for a 330B L's hydraulic load.
$3,165.00/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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Our in house parts are manufactured following strict quality standards in our warehouse in Ohio. Parts such as hydraulic cylinders, pins, bushings, sheet metal, track adjusters, booms and dipper sticks are all ready to ship same day that they are purchased! With less time to wait for your shipment, you will be able to get back to work as quickly as possible.
Did you accidentally purchase the incorrect part? We offer returns and exchanges here at Broken Tractor. To proceed with a return, please fill out our form, and we will provide you with return authorization and a step by step return process for your convenience. We are more than happy to help you exchange your part for the correct one! fill out our form to make a request here at Return Request Form and we would be pleased to help you.
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