3.9 Cummins 4BT

Restore, maintain, and boost the reliability of your legendary 3.9L Cummins 4BT engine with high-quality replacement parts and performance upgrades. Whether you are tackling an engine rebuild, fixing oil leaks, or upgrading fuel and turbo systems for better power output, finding dependable components is essential for keeping these rugged industrial engines running strong. Upgrading to durable internal parts, gaskets, and performance accessories ensures long-lasting performance and dependable torque. Shop precision-engineered 4BT components built for exact fitment and rugged, long-term durability.

20 Items

Usually Ships in 24-48 Hours

**3.9L Cummins 4BT Tappet Set Colt Cams TAPPETS-4BT** $110.00
Fits: 3.9 Cummins 4BT 1989-1998

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**3.9/5.9 Cummins 180 Degree Thermostat 5292742** $84.41
Fits: 5.9 Cummins 1998.5-2007 | 3.9 Cummins 4BT

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**3.9 Cummins Diesel Head Stud Kit ARP 247-4206** $424.61
Fits: 3.9 Cummins 4BT

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**3.9 Cummins Diesel Custom Age 625+ Head Stud Kit ARP 247-4207** $1,108.59
Fits: 3.9 Cummins 4BT

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**3.9 Cummins Diesel Main Stud Kit ARP 247-5404** $249.12
Fits: 3.9 Cummins 4BT

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**3.9 Cummins Rod Bolt Kit ARP 247-6304** $141.46
Fits: 3.9 Cummins 4BT

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**3.9L Cummins P-Series Main Bearing Set (Standard) Clevite MS-1718P** $65.84
Fits: 3.9 Cummins 4BT 1989-1998

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**3.9 Cummins P-Series Main Bearing Set (0.25MM Undersized) Clevite MS-1718P-.25MM** $82.08
Fits: 3.9 Cummins 4BT 1989-1998

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**3.9 Cummins P-Series Main Bearing Set (0.50MM Undersized) Clevite MS-1718P-.50MM** $72.47
Fits: 3.9 Cummins 4BT 1989-1998

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Temporarily Out of Stock

**3.9 Cummins Head Gasket (Standard Thickness) 3283333** $210.85
Fits: 3.9 Cummins 4BT 1989-1998

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Temporarily Out of Stock

**3.9 Cummins Head Gasket (+.020 Thickness) 3283338** $329.73
Fits: 3.9 Cummins 4BT

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**3.9 Cummins 4BT Lower Engine Gasket Set 3802375** $883.51
Fits: 3.9 Cummins 4BT 1989-1998

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**5.9 12v Cummins Tappet 3931623** $43.01
Fits: 5.9 Cummins 1989-1998 | 3.9 Cummins 4BT

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**5.9 12v Cummins Performance Diesel Series Damper Fluidampr 960311** $643.31
Fits: 5.9 Cummins 1989-1998 | 3.9 Cummins 4BT

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**3.9 Cummins Lower Engine Gasket Set Mahle CS4961** $279.11
Fits: 3.9 Cummins 4BT

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**3.9 Cummins Standard Thickness Head Set Mahle HS4961** $287.37
Fits: 3.9 Cummins 4BT

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**3.9 Cummins (+.010) Head Set Mahle HS4961-2** $293.21
Fits: 3.9 Cummins 4BT

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**3.9 Cummins-3 (+.020) Head Set Mahle HS4961** $283.83
Fits: 3.9 Cummins 4BT

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**3.9 Cummins Engine Oil Pan Gasket Mahle OS32172** $18.52
Fits: 3.9 Cummins 4BT 1989-1998

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**Atlas 0986444507 Reman VP30 Injection Pump** $2,885.63
Fits: 3.9 Cummins 4BT

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