- 1.375" Piston Pin Diameter2
- 1.625" Piston Pin Diameter2
- 4.667-4.677" liner o-ring groove diameter2
- 5.0 mm liner o-ring2
- Early2
- Emission Certified53
- High Ring Piston4
- Indirect Injection4
- Naturally Aspirated14
- Neuss2
- Non-Emission Certified18
- O-Rings in the Block2
- O-Rings on Liner2
- Screw-in fuel injector4
- Turbocharged19

HCCOK21324
Major Overhaul Kit, Cummins 4BT 3.9 Diesel Engine, .50mm Pistons
- In-Stock
- $791.29 USD 791.29

HCCOK20624
Major Overhaul Kit, Cummins 4B 3.9 Diesel Engine, .50mm Pistons
- In-Stock
- $679.72 USD 679.72

HCCOK20604
Major Overhaul Kit, Cummins 4B 3.9 Diesel Engine, Std. Pistons
- In-Stock
- See Alternatives
- $704.48 USD 704.48

HCCIK20644
Inframe Overhaul Kit, Cummins 4B 3.9 Diesel Engine, 1.0mm Pistons
- In-Stock
- $552.95 USD 552.95

HCCIK21024
Inframe Overhaul Kit, Cummins 4BTA 3.9 Diesel Engine, .50mm Pistons
- In-Stock
- $582.19 USD 582.19

HCCIK21044
Inframe Overhaul Kit, Cummins 4BTA 3.9 Diesel Engine, 1.0mm Pistons
- In-Stock
- $611.80 USD 611.8

HCCIK21324
Inframe Overhaul Kit, Cummins 4BT 3.9 Diesel Engine, .50mm Pistons
- In-Stock
- $582.19 USD 582.19

HCCIK21344
Inframe Overhaul Kit, Cummins 4BT 3.9 Diesel Engine, 1.0mm Pistons
- In-Stock
- $582.19 USD 582.19

HCCOK21004
Major Overhaul Kit, Cummins 4BTA 3.9 Diesel Engine, Std. Pistons
- In-Stock
- See Alternatives
- $756.86 USD 756.86

HCCIK21604
Inframe Overhaul Kit, Cummins 4BT 3.9 Diesel Engine, Std. Pistons
- In-Stock
- See Alternatives
- $582.19 USD 582.19

HCCIK21004
Inframe Overhaul Kit, Cummins 4BTA 3.9 Diesel Engine, Std. Pistons
- In-Stock
- See Alternatives
- $602.14 USD 602.14

HCCIK20604
Inframe Overhaul Kit, Cummins 4B 3.9 Diesel Engine, Std. Pistons
- In-Stock
- See Alternatives
- $552.95 USD 552.95

HCCOK21024
Major Overhaul Kit, Cummins 4BTA 3.9 Diesel Engine, .50mm Pistons
- In-Stock
- $734.19 USD 734.19

HCCOK21044
Major Overhaul Kit, Cummins 4BTA 3.9 Diesel Engine, 1.0mm Pistons
- In-Stock
- $766.50 USD 766.5

HCCOK21344
Major Overhaul Kit, Cummins 4BT 3.9 Diesel Engine, 1.0mm Pistons
- In-Stock
- $720.85 USD 720.85

HCCIK20624
Inframe Overhaul Kit, Cummins 4B 3.9 Diesel Engine, .50mm Pistons
- In-Stock
- $552.95 USD 552.95

HCCOK21604
Major Overhaul Kit, Cummins 4BT 3.9 Diesel Engine, Std. Pistons
- In-Stock
- See Alternatives
- $752.11 USD 752.11

HCCOK20644
Major Overhaul Kit, Cummins 4B 3.9 Diesel Engine, 1.0mm Pistons
- In-Stock
- $689.72 USD 689.72