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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 Connecting Rods

Cummins 4BT/6BT Connecting Rods

We carry connecting rods 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.

3939407

CONNECTING ROD - 4B3.9 / 6B5.9 / ISB6.7 / QSB3.9 / QSB5.9

Genuine Cummins Part

$745.18

DS-3901569
Hassle-Free Return Item

CONNECTING ROD - 4B / 6B

$84.70

DS-3939407

CONNECTING ROD - ISB / QSB / ISC / QSC

$106.03

DS-3971394

CONNECTING ROD - 6C8.3 / QSC8.3 / 4B3.9 / 6B5.9

$147.88

DS-4943979
Hassle-Free Return Item

CONNECTING ROD - 4B / 6B / ISB / QSB

$143.13

R-3925232

REMANUFACTURED CONNECTING ROD - 4B / 6B / ISB / QSB

Additional refundable core charge: $375.00 (See Details)

$61.50

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

Monday-Friday 7am-5pm CST
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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