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Our offices are closed for Thanksgiving. Orders placed online will be processed on Monday 12/1/2025.

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Cummins 4BT/6BT Oil Coolers

Cummins 4BT/6BT Oil Cooler

We carry oil coolers for Cummins 3.9 and 5.9 liter engines. For your convenience, you can access our inventory through the product links listed below.

If you do not see the B Series part you need, please use our quote request form or call us at 888.687.0539: our friendly sales staff will gladly help you.

0102-1530

OIL COOLER - B SERIES / ISB (ONAN)

Genuine Cummins Part

Call for price

3915159

OIL COOLER - B5.9

Genuine Cummins Part

$727.32

DS-3921557

OIL COOLER CORE - 4B3.9 / 6B5.9 / B4.5 / B6.7

$113.88

DS-3957543
Hassle-Free Return Item

OIL COOLER CORE - 6B / ISB (5 PLATE)

Surplus Item - Special Pricing

$67.02

DS-3957544
Hassle-Free Return Item

OIL COOLER CORE - 4BT / 6BT (7 PLATE)

Surplus Item - Special Pricing Use with DS-4932124 and DS-3942915 Mounting Gaskets

$93.80

DS-3959031

OIL COOLER CORE - ISBE

$114.55

DS-3966365

OIL COOLER - 4BT / 6BT / ISB 6.7L / 6CTA 8.3L (15 PLATE)

$213.63

DS-4932124
Hassle-Free Return Item

OIL COOLER CORE GASKET - ISB / QSB

$13.08

888.687.0539 (U.S.)|225.706.4858 (Int.)

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8784 S. Choctaw Dr. Baton Rouge, LA 70815
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Caterpillar® and all of the Caterpillar® engine models listed on this website are registered trademarks of Caterpillar, Inc. Cummins® and all of the Cummins® engine models listed on this website are registered trademarks of Cummins. Detroit Diesel® and all of the Detroit Diesel® engine models listed on this website are registered trademarks of Daimler AG. John Deere® and all of the John Deere® engine models listed on this website are registered trademarks of John Deere. Allison Transmission® and all of their transmission models listed on this website are registered trademarks of Allison Transmission®. Diesel Parts Direct is not an authorized dealer for Caterpillar, Cummins, Detroit Diesel, John Deere, or Allison Transmission. None of the parts beginning with "DS" or "R" are genuine Caterpillar, Cummins, Detroit Diesel, John Deere, or Allison Transmission items.

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