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New cummins 4B 4BT 4BTA3.9L engine long block 3.9L


New Surplus Cummins 4B 4BT 4BTA Long Block
Other options are available contact us for details.
6 Month Parts Warranty & Finishing Gasket Set Included
$3485 & $500 Refundable Core in any condition ($3985 up front)
(You can pre-pay your core or you can send your core in advance however we recommend keeping your core until your machine is up and running)
Free Return Freight on your Core.
Contact us with your serial number to verify fit, cover & piston.
These engines come with a rotary style gear housing. If you have a Bosch A or P inline you can change over your gear housing or we can have it done for an additional fee. Changing the gear housing will not void the warranty. If you have a special application that requires a piston change we offer this for an additional cost. (piston change over is not normally required)



New cummins 4B 4BT 4BTA3.9L engine long block 3.9L