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Cummins 4B 3.9 Engines For Sale

Browse Cummins 4B 3.9 Engines for sale on MyLittleSalesman.com. Compare prices, photos, and seller details across 6 listings. Cummins 4B 3.9 Engine pricing ranges from $5,100 to $8,995 based on recent marketplace data. Filter by condition, price, or year to find the right Cummins 4B 3.9 Engine.
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Showing 1 - 6 of 6 Engine Listings

1 - 6 of 6 listings
1 - 6 of 6 listings
2020 Cummins 4B 3.9 Diesel Engine UNUSED SURPLUS! CPL 0721

2020 Cummins 4B 3.9 Diesel Engine UNUSED SURPLUS! CPL 0721

$8,995 USD
2020 Cummins 4B 3.9 diesel engine, FACTORY REMANUFACTURED, naturally aspirated, mechanical fuel system, CPL 0721 (CPL 721,) 80 HP at 2800 RPM rating, CAV injection pump, as pictured. SAME...
ConditionUsed
Stock Number19324
MLS Number14658949
CategoryEngines
Last Updated10/12/2026
Location
Carbondale, PA, US
Sold By
Old Forge Power Equipment, Inc
(833) 662-___  SHOW
NUMBERCall Seller
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Old Forge Power Equipment, Inc
2019 Cummins 4B 3.9 Diesel Engine FACTORY REMAN CPL 0721

2019 Cummins 4B 3.9 Diesel Engine FACTORY REMAN CPL 0721

$8,995 USD
2019 Cummins 4B 3.9 diesel engine, FACTORY REMANUFACTURED, naturally aspirated, mechanical fuel system, CPL 0721 (CPL 721,) 80 HP at 2500 RPM rating, CAV injection pump, as pictured. SAME...
ConditionUsed
Stock Number19322
MLS Number14658947
CategoryEngines
Last Updated10/12/2026
Location
Carbondale, PA, US
Sold By
Old Forge Power Equipment, Inc
(833) 662-___  SHOW
NUMBERCall Seller
Email Seller
Save
Old Forge Power Equipment, Inc
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