Caterpillar publishes no replacement or superseding number for 7Y-1961, and lists it as an active part rather than a discontinued one.
Caterpillar's catalog covers the A Series variants 320-A, 320-A L and 320-A N under this number in addition to the 320 L and 320N the supplier list carries.
Do not confuse this with the B Series cores: 1415722 (141-5722) is the engine radiator core for the 320B, and 1843896 (184-3896) the oil cooler and radiator core on the same machine. A 320 core does not fit a 320B.
Key Notes:
Part Number: 7Y1961 (Caterpillar reference 7Y-1961)
Type: Engine radiator core - core only, no tanks or frame
Function: Transfers heat from the engine coolant into the air passing through the fin pack
Weight: 106.0 lbs.
Condition: Aftermarket replacement part
Application: Replaces the engine radiator core on Caterpillar 320 L and 320N hydraulic excavators, including the A Series variants
Shipping Restrictions: Ships to the lower 48 US states only
Note: Core only - tanks, side frames, hoses, cap, thermostat and hardware are not included, and the tanks are normally transferred by a radiator shop. Caterpillar publishes no dimensions for this core; match the unit being removed by face size and tube pattern. Ships LTL freight; inspect on arrival.
Common Use Case or Symptoms:
Reach for this when an original 320 or 320N will not stay off the top of the gauge - these are old enough now that the core is usually the last original part in the cooling system, and no amount of new hoses and a fresh thermostat will fix a plugged one.
Why Choose Broken Tractor?
✅ Still A Current Number: Caterpillar has not retired 7Y-1961, which is unusual for a core on a machine of this vintage.
✅ A Series Covered Too: The 320-A, 320-A L and 320-A N fall under the same number, coverage the supplier list alone does not show.
✅ Not A 320B Core: The B Series uses entirely different cores, and the listing names them so a yard with both generations orders correctly.
$1,488.00/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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