WHAT IT DOES
The cylinder block is the engine's main structure, carrying the cylinders, crankshaft bearings, oil galleries and coolant jackets. Replacement blocks are used for engine rebuilds after cracking or bore damage.
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Cylinder Blocks · Cummins
Cummins 4BT / 4D102 Cylinder Block
OE 3903920 / 4089546
Aftermarket replacement for B2B importers, distributors, wholesalers and private-label programs.
- Product category
- Cylinder Blocks
- Brand application
- Cummins
- Engine / model
- 4BT / 4D102
- OE references
- 3903920 / 4089546
- Application
- Cummins 4BT 3.9/4D102
- Gross weight
- 105 kg
- Packing size
- 560 × 400 × 510 mm
Confirm final specification and application before ordering.
PRODUCT OVERVIEW
ABOUT THIS CYLINDER BLOCK.
The TRUPA Cummins 4BT / 4D102 Cylinder Block is an aftermarket replacement cylinder block referenced to OE numbers 3903920, 4089546. It is listed for Cummins 4BT 3.9/4D102 (4BT / 4D102). TRUPA supplies it to importers, distributors, wholesalers and private-label programs, with China export supply and partner-warehouse support in the USA and Brazil for eligible orders. Packed gross weight is approximately 105 kg, with a packing size of 560 × 400 × 510 mm.
APPLICATION & FITMENT
Listed for Cummins 4BT 3.9/4D102. More parts for Cummins. Engine family: Cummins 4BT / 4D102.
OE & INTERCHANGE NUMBERS
- 3903920
- 4089546
BEFORE YOU ORDER
- OE / casting number and engine model
- Bare block or long-block configuration
- Liner type (wet liner, dry liner or parent bore)
COMMON REPLACEMENT SIGNS
- Cracks in the water jacket or main bearing webs
- Bore damage beyond rebore limits
- Coolant and oil mixing through internal cracks
QUALITY CHECKS
Blocks should be pressure-tested, with bore, deck and main-bearing alignment checked before supply. How TRUPA approaches quality control.
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