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1984-1998 3.9L 4BT Cummins Diesel Parts

Welcome to our 3.9L Cummins 4BT section. We invite you to take a look at our selection of injection lines, injectors, fuel pins and governor springs, main bolt sets, gaskets including fire ring gasket kits, and much more! We offer exhaust manifolds from Steed Speed, valve springs, push rods and cams from Hamilton Cams, as well as main stud kits from Haisley Machine.

If you don't see what you are looking for, please call us at 715-254-1833 and we will help you find it or take advantage of our Live Chat feature and talk directly to one of our associates.

Brand: Interstate-McBee Part Number: 4x M-4891178
NOTE: NEW STYLE CUMMINS BEARINGS NOW HAVE A K GROOVE ON THE OUTSIDE OF THE BEARING THAT DRAWS OIL INTO THE CENTER. McBee part number: M-4891178..
$31.00
Brand: Cummins Part Number: 4891178 x4
Includes 4 of #2 in second picture ONLY! NOTE: NEW STYLE CUMMINS BEARINGS NOW HAVE A K GROOVE ON THE OUTSIDE OF THE BEARING THAT DRAWS OIL INTO THE CENTER. 4x Cummins: 4891178..
$76.96
Brand: Cummins Part Number: 4089648
This upper gasket kit should fit any 3.9L 4BT Cummins equipped with the rotary injection pump. Please enter your ESN above so we can ensure proper fitment before shipping.Cummins part number: 4089648..
$328.19
Brand: Bosch Part Number: 4x 2433462014
1 Set of 4, 15/16 size nuts, used to hold the 3.9L Injectors into the cylinder head. These are the same nuts used on 94-98 5.9L 12 Valve Cummins injectors. These generally do not go bad and are re-usable. Bosch: 2433462014..
$96.90
Brand: Scheid Diesel Part Number: 4BTINJLINE
Please allow 2-3 day lead time before item ships. Image for reference only. (But is pretty close ;) from 6BT 12V) * .078 and .084 can only be ordered in mild steel...
$109.24
Brand: Cummins Part Number: 8x 3900919
Set of eight factory OEM Cummins rod bolts. For Cummins 3.9L 4BT Diesels. Cummins part number: 3900919..
$104.64
Brand: Interstate-McBee Part Number: 8x M-3900919
Set of eight McBee rod bolts. For Cummins 3.9L 4BT Diesels. McBee part number: M-3900919..
$53.76
Brand: Cometic Gasket Inc Part Number: PRO3000B
Lead Time is 2-3 Weeks out!The heart of any pulling truck, race car, or tuner car is the engine that powers it. just like a real heart you should do anything to protect it so that it can continue to perform for many years to come.  Cometic is pleased to offer protection for your engine in the ..
$240.55
Brand: Cummins Part Number: 3918954
Oil filter housing or filter head housing for Cummins 4BT. Please enter ESN above so we can verify fitment for your application. Cummins part number: 3918954 Image is not actual part. For reference only. This is a hard to find part. Please call for availability before ordering...
$258.80
Brand: Cummins Part Number: 4BT-OHKit
Kit includes: 4 of 4891178 - BUSHING, WRIST PIN 4 of 3802160 - KIT,ENGINE PISTON 8 of 3969562 - BEARING,CON ROD 4089648 - SET,UPPER GASKET 3802375 - SET,LOWER GASKET 3901306 - BUSHING,CAMSHAFT 4955855 - SET,MAIN BEARING Standard main seals and standard pistons. Please let us know your E..
$2,558.09
Brand: Interstate-McBee Part Number: M-3804896
4BT '89-'93 3.9L Cummins Head Gasket Set "STD." (Aftermarket) ..
$87.61
Brand: Mahle Part Number: HS4961
Contains Standard Thickness Head Gasket Engine Designation: 4B-3.9 239 CID (3.9 L); 4 4.02" (102.0 mm) Bore You receive every part you need to complete your gasket repair in one package unless otherwise stated.MAHLE Original® head gasket sets are packaged in shrink wrapped tray, giving you the abil..
$135.74
Brand: Cummins Part Number: 3938153
3.9L 4BT Cummins Large Intake Plate Gasket Includes item #1 in the picture. Cummins: 3938153..
$12.47
Brand: Automotive Racing Products Part Number: 247-4207
CUSTOM AGE 625 PLUS®: This newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness – with complete resistance to atmospheric corrosion and oxidation. ARP is the first to develop manufacturing and testing processes for fasteners with Custom Age 625+. Best..
$969.98
Brand: Dynomite Diesel Part Number: DDP4BTVE-2
Sold as a new set of 4BT injectors. Approximate gains of 50-70 HP over stock injectors. Sold as a new set. Good smoke control. Recommended use with modified turbo. No core. DDP part number: 4BTVE-2...
$551.05
Brand: Dynomite Diesel Part Number: DDP4BTVE-3
Sold as a new set of 4BT injectors. Approximate gains of 70-100 HP over stock injectors. Sold as a new set. Aftermarket turbo HIGHLY recommended No core. DDP part number: 4BTVE-3...
$576.80
Brand: Dynomite Diesel Part Number: DDP4BTP-ECO
Cummins 4BT with P-Pump New Injector Set: Economy Series fuel injector, new nozzle and new injector body, OEM quality with slight performance gain over Stock. No cheap knockoffs! Recommend timing 17-18 degrees.Details:Engine: CumminsFuel Type: DieselCondition: NewNot For Sale In California DDP pa..
$489.25
Brand: Dynomite Diesel Part Number: DDP4BTP-1
Cummins 4BT with P-Pump New Fuel Injector Set: MPG increase, great smoke control. Injectors can support up to 285 RWHP; recommended timing 17-18 degrees. Sold as a matched injector set with no core.Details:Engine: CumminsRated HP - 285Condition: NewNot For Sale In California DDP part nu..
$551.05
Brand: Dynomite Diesel Part Number: DDP4BTP-2
Cummins 4BT with P-Pump New Fuel Injector Set: MPG increase, great smoke control. Injectors can support up to 350 RWHP; recommended timing 18-19 degrees. Sold as a matched injector set with no core.Details:Engine: Cummins 4BTRated HP - 350Condition: NewNot For Sale In California DDP par..
$602.55
Brand: Dynomite Diesel Part Number: DDP4BTP-3
Cummins 4BT with P-Pump New Fuel Injector Set: Biggest Street injector recommended. Injectors can support up to 480 RWHP. Modified fuel supply is ideal. Recommended timing 20-22 degrees. Sold as a matched injector set with no core. These are the biggest injector recommended for street use. ..
$654.05
Brand: Dynomite Diesel Part Number: DDP4BTP-4
Cummins 4BT with P-Pump New Injector Set: Injectors big enough for a 13mm pump. Aftermarket supply pump required. Injectors can support up to 575 (or more) RWHP. Call for timing recommendations based on your application. Sold as a matched injector set with no core.Details:Engine: CumminsRated H..
$736.45
Brand: Dynomite Diesel Part Number: DDP4BTVE-1
Sold as a new set of 4BT injectors. Approximate gains of 35 HP over stock injectors. Sold as a new set. Excellent mileage & smoke control. No core. DDP part number: 4BTVE-1...
$525.30
Brand: Haisley Machine Part Number: 14MMMAIN STUDS-4BT
 Main studs 14mm x 2.00 4340 material Black oxide finish Hex broach for easy installation HD washers and 12 pt hardened nuts Instructions Standard length Manufactured for Haisley machine by ARP Important note: Please verify which size your stock main bolts are before ordering, these co..
$380.66
Brand: Cometic Gasket Inc Part Number: PRO3000T
The heart of any pulling truck, race car, or tuner car is the engine that powers it. just like a real heart you should do anything to protect it so that it can continue to perform for many years to come.  Cometic is pleased to offer protection for your engine in the form of StreetPro gasket kits.  H..
$226.39
Brand: Cummins Part Number: 3283336
Cummins factory OE .10 over head gasket. Please allow a 3-5 day lead time before part ships. Cummins part number: 3283336..
$192.32
Cummins 3.9L 4BT OEM 20 Over Head Gasket
Backordered
Brand: Cummins Part Number: 3283338
Backordered with No ETA   **Updated on 01/12/2023**Cummins factory OE .20 over head gasket. Please allow a 3-5 day lead time before part ships. Cummins part number: 3283338..
$235.33
Brand: Cummins Part Number: 3284170
Oil cooler cover. This would be for custom applications if used in a Dodge pickup. 4BT B3.9L 4B 4BTA 4BTAA/B5.9L 6B 6BT 6BTA 6BTAA Genuine Cummins Part Number: 3284170...
$575.89
Brand: Cometic Gasket Inc Part Number: C5591
Incorporates a locking bore seal for even greater cylinder sealing potential. Provide maximum sealing performance for today's high output engines and requires no sealants Ideal for aluminum heads to aluminum blocks and aluminum heads to cast iron blocks withstanding the shearing force created by t..
$122.29
Brand: Cummins Part Number: 3901635
4bt Cummins Exhaust Manifold Number one from image only. Does not include gaskets. Please enter your Engine Serial Number above to ensure proper fit. There is a $30 factory charge applied to this part. Cummins part number: 3901635..
$467.80
Brand: Dynomite Diesel Part Number: DDP4BTVE-ECO
2-5 Day Build Time Sold as a new set of 4BT injectors. Sold as a new set. OEM quality. Slight gains over stock. Not cheap knockoffs. No core charge. DDP part number: 4BTVE-ECO...
$473.80
Brand: Dynomite Diesel Part Number: DDP4BTVE-COMP
Sold as a new set of 4BT injectors. All comp injectors are custom suited for your vehicle and your individual gains may vary truck to truck. Sold as a new set. Aftermarket turbo HIGHLY recommended Race Waiver required. Built after recieving the waiver. No core. DDP part number: 4BTVE-COMP...
$736.45
Brand: Contagious Diesel Performance Part Number: CD 5x.0114BT
Set of 4 Contagious Diesel 5x.011 injectors with SAC nozzles for the 4BT Dodge 3.9L 8 Valve Cummins Turbo Diesel. Small bowl only, these will not work well with the LARGE bowl piston found in some 4BT's.These injectors are set up as a matched set, for the stock style piston bowl.Built using 7MM nozz..
$0.00
Brand: Contagious Diesel Performance Part Number: CD 5x.012 4BT
Set of 4 Contagious Diesel 5x.012 injectors with SAC nozzles for the 3.9L 4BT VE Pump Cummins Turbo Diesel equipped with the VE Rotary Injection Pump or P7100 Inline Injection pump. These will give you an appromixate 60HP gain if your pump is tuned correctly. These injectors have a 7mm nozzle, we c..
$0.00
Brand: Contagious Diesel Performance Part Number: CD 5x.014 4BT
Set of 4 Contagious Diesel 5x.014 injectors with SAC nozzles for the 3.9L 4BT VE Pump Cummins Turbo Diesel equipped with the VE Rotary Injection Pump or P7100 inline pump. These will give you an appromixate 90HP gain if your pump is tuned correctly.These injectors have a 7mm nozzle, we cannot build ..
$0.00
Brand: Hamilton Cams Part Number: 07-P-007E
Fits: 1989-1998 3.9L 4Bt Cummins If your wanting to make major horsepower in your 4BT, there is only one pushrod that will do- this Hamilton Cams Extreme Duty Pushrods. This one is rated 500+ HP.  Features:  For Applications Over 500HP Intake Pushrod-3/8".095" Wall ..
$219.00
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