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Engine Oil Cooler Compatible With 1987-1997 Case 580K/580Sk 4Bt/4Bta 3.9L 239 Cid Brick Type 5-Plate

C3921557A2
OEM PART NUMBERS:
• Cummins: 3921557 (Primary OEM)

SPECIFICATIONS:
• Cooler Type: Brick Type
• Plate Count: 5
• Core Material: Aluminum
• Engine: 4BT/4BTA
• Displacement: 3.9L
• Condition: New

APPLICATION:
• Compatible with Cummins 4BT3.9/4BTA3.9 (1984-2004)
• Compatible with Case 580K/580SK (1987-1997)

PRODUCT NOTICE:
As a parts distributor we mostly sell aftermarket parts (any OEM parts would be noted as such). Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but are designed to function the same as - if not better than - the original. All parts sold are new.

WARNING - This product may expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov

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Description

CUMMINS INDUSTRIAL:
• Cummins 4BT3.9/4BTA3.9 4BT/4BTA 3.9L Diesel (1984-2004)

CASE CONSTRUCTION:
• Case 580K/580SK 4BT 3.9L Diesel (1987-1997)


IMPORTANT:
5-plate brick cooler for Cummins 4B Series (4BT/4BTA) 3.9L engines. Found in Case 580K/580SK backhoe loaders, various bread trucks, shuttle buses, and marine auxiliary applications (1984-2004).
Do NOT confuse with the 6BT/6BTA 5.9L cooler C3921558, which is a 7-plate unit. The 4B and 6B engines share the same block architecture but use different plate counts — a 4B cooler will not provide adequate cooling for a 6B.
The Cummins B Series uses a PreSTORM and STORM block design. Gasket sets differ between PreSTORM (pre-1998) and STORM (1998+) blocks — ensure you order the correct gasket set for your engine build date.
Failure symptoms: milky oil, oil in coolant, elevated oil temps, external oil weep. Replace cooler gaskets during installation — do not reuse old gaskets.
⚠️ Confirm 4BT/4BTA 3.9L — not 6BT/6BTA 5.9L.

Details

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  • Item Requires Shipping
  • 4.9 lbs.
  • W8.0000” x H6.0000” x L10.0000”
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