Fast delivery within 72 Hours
Cummins 4B Inframe Engine Rebuild Kit, New (OH39577994B)
โ Replace Part Number: OH39577994B
โ Fit for: Cummins 4B engines
โ Built to OEM specs for a proper fit
โ Send us an inquiry for price
Diesel parts can vary between engine builds. If you choose not to provide an ESN or CPL, we may not be able to confirm fitment before an order is shipped. Please check the part number and engine application carefully to help avoid selecting the wrong part.
Hassle-free 30-day return policy for a risk-free shopping experience.
3 Months Warranty
Enjoy 3-month warranty, ensuring long-lasting reliability and peace of mind.
2-7 Days Fast Delivery
Receive your order within 2 to 7 days, ensuring fast and reliable delivery.
24/7 Service
Round-the-clock support to assist you whenever you need it.
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30-Day Money Back
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2-7 Days Fast Delivery
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6 Months Warranty
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24/7 Service
Product Details
Think you know the truth about Aftermarket Rebuild Kits? We’d bet you’d be surprised.
It’s no secret, rebuilding your rig is one of the most labor (and wallet) intensive repairs out there. Sure, you want your engine to last another million miles but you also want the best price; so what should you choose- OEM or Aftermarket?
When it comes to engine parts, the aftermarket often gets a bad rep. The idea that aftermarket retailers sell cheap parts with zero warranty, delivered in a beat-up box written in another language couldn’t be further from the truth. 4BTdiesel is here to set the record straight; we only sell Rebuild Kits with new parts, zero core charges, and a 6-month warranty. On top of only offering premium quality parts, we also make sure you save up to 50% off OEM prices. So, when it comes to your rebuild, what’s left to want?
Need a little extra proof? Let’s talk Rebuild Kits.
- Here at 4BTdiesel, quality matters.ย To ensure quality and consistencyย for your rebuild kit,all kits are manufactured and assembled in an ISO 9001:2008 certified facility.ย
- To sweeten the deal, all components of your kit are brand new and have equal or better quality compared to the OE, but it’s all at a much lower price with no core charge!
- Not only are we going to save you money, we will save you time! Along with fast shipping, your Overhaul Rebuild Kit is packaged into subassemblies by functionย to help make installation a breeze!
- Leakage? Not with these gaskets! To ensure superior performance in functionality and sealability, gaskets are crafted with the correct materials.
- Plus, alongside gaskets are 100% asbestos free sealing products that were proudly made in the USA.
- Don’t be the guy with a puddle of oil under the rig! To maintain proper oil control, oil control rings are designed with precise tangential tension. You can’t beat it!
- Want to talk durability? 4BTdiesel has you covered withย tri-metal connecting rod and main bearings made just for durability!
- Why settle for sub-par parts? To go the extra mile,ย piston pins are hardened and tempered for improved strength and wear resistance.
- For long lasting strength within your engine,ย pistons are CNC turned to precise tolerancesย and useย computer controlled machining to maintain proper clearances. You can’t beat it!
- So what’s stopping you? Restore and extend the life of your engine with correct fit and function an all new Inframe Rebuild Kit built to OEM specifications.
Kit Contents:
- (4) .50mm Piston Kits
- (8) Piston Pin Retainers
- (4) Piston Pins
- (4) .50mm Engine Pistons
- (4) .50mm Piston Ring Sets
- (4) Oil Piston Rings
- (4) Compression Piston Rings
- (4) Compression Piston Rings
- (1) Main Bearing Set
- (4) Main Bearings
- (4) Main Bearings
- (1) Thrust Bearing
- (4) Connecting Rod Bearings
- (4) Connecting Rod Bearings
- Upper Engine Gasket Set
- (1) Timing Housing Gasket
- (1) Rectangular Ring Seal
- (1) Seal
- (1) Cover Plate Gasket
- (1) Rear Rectangular Seal
- (1) O-Ring Seal
- (1) Gasket
- (1) Gear Cover Gasket
- (1) Fuel Pump Gasket
- (1) Rectangular Ring Seal
- (1) Rectangular Ring Seal
- (1) Air Compressor Gasket
- (1) Gear Housing Gasket
- (1) Copper Gasket
- (1) Rear Cover Gasket
- (6) Grommet Seals
- (1) Push Rod Cover Gasket
- (1) Oil Pan Gasket
- (1) Cover Plate Gasket
- (1) Filter Head Gasket
- (1) Hydraulic Pump Gasket
- (1) Gasket
- (4) Piston Cooling Nozzles
- (1) Rear Crankshaft Seal Kit
- (1) Seal Installation Tool
- (1) Oil Seal
- (1) Seal Installation Tool
- (1) Seal Installation Tool
- (2) Sealing Washers
- (4) Cooling Nozzles
- (1) Oil Cooler Core Gasket
- (1) Filter Head Gasket
- (1) Rectangular Ring Seal
- (1) Rectangular Ring Seal
- (1) Front Crank Seal
Warranty
6-month warranty.
What Rebuild Kit and Gasket Set Includes
| Qty | Component | Part Number |
|---|---|---|
| 4 | .50mm Piston Kits | 3957799 |
| 8 | Piston Pin Retainers | 3920691 |
| 4 | Piston Pins | 3934047 |
| 4 | .50mm Engine Pistons | 3957798 |
| 4 | .50mm Piston Ring Sets | 3938197 |
| 4 | Oil Piston Rings | 3933585 |
| 4 | Compression Piston Rings | 3937428 |
| 4 | Compression Piston Rings | 3937430 |
| 1 | Main Bearing Set | 3802010, 4955855 |
| 4 | Main Bearings | 3929016 |
| 4 | Main Bearings | 3929021 |
| 1 | Thrust Bearing | 3926723 |
| 4 | Connecting Rod Bearings | 3969562, CUM3901170, 3939859, 3901230, 3901170 |
| 4 | Connecting Rod Bearings | 4893693 |
| Upper Engine Gasket Set | 4089648 | |
| 1 | Cylinder Head Gasket | 3283333 |
| 2 | Washers | 3918188, 3903728 |
| 4 | Injector Sleeves | 3919358, CUM3919358 |
| 4 | Injector Seals | 3923261, 3919725, CUM3923261 |
| 1 | Thermostat Seal | 3923331, 3920020, 3903301, CUM3923331 |
| 4 | Exhaust Manifold Gaskets | 3927154, 3905443, 3901456 |
| 4 | Valve Cover Gaskets | 3930906, 3902666, 3902494, CUM3930906 |
| 4 | Noise Isolators | 3935449, 3928406 |
| 1 | Rectangular Ring Seal | 3936876, 3902363 |
| 4 | Mid Range XPI Injector Seals | 3937142 |
| 4 | Washers | 3900808 |
| 1 | Turbo Oil Drain Gasket | 5264569, 3942725, 3937706, 3931350, 3928919, 3914388, 3819378, 3285747, 3282113 |
| 1 | Intake Manifold Gasket | CUM3931605, 3938153, 3931605, 3914028, 3901999 |
| 8 | Valve Stem Seals | 3957912 |
| 1 | Gasket | CUM3901356, 3901356 |
| 1 | Sealing Washer | 3902425, CUM3902425 |
| 4 | Banjo Seals | 3903380, CUM3903380, 4942278 |
| 1 | Rectangular Ring Seal | 3906694 |
| 1 | Washer | 3906773 |
| 4 | Rocker Cover Bolt Seals | 3910824, 3901837 |
| 1 | Metal Gasket | 3912220, 3903251 |
| 1 | Lower Engine Gasket Set | 3802375, 3802266, 3802019 |
| 1 | Timing Housing Gasket | 3905595, 3903926, 3902629 |
| 1 | Rectangular Ring Seal | CUM3906697, 3906697, 3901467 |
| 1 | Seal | 3906698, CUM3906698 |
| 1 | Cover Plate Gasket | 3902734, 3908096 |
| 1 | Rear Rectangular Seal | 3906699, 3912473, CUM3912473 |
| 1 | O-Ring Seal | 102827, 3903927, 3913994 |
| 1 | Gasket | 3900454, 3905468, 3914383, 3931349, 3938157, CUM3931349 |
| 1 | Gear Cover Gasket | 3902369, 3904492, 3905143, 3910500, 3914385, CUM3914385 |
| 1 | Fuel Pump Gasket | 3931607, 3939355 |
| 1 | Rectangular Ring Seal | 3906693, 3914092, 3915772 |
| 1 | Rectangular Ring Seal | 3915800 |
| 1 | Air Compressor Gasket | 3904686, 3910055, 3916042 |
| 1 | Gear Housing Gasket | 3902364, 3907836, 3914384, 3916131, 3931351, 3938156, 3940182, CUM3931351 |
| 1 | Copper Gasket | 3900216, 3920773 |
| 1 | Rear Cover Gasket | 3901019 , 3914386, 3928493, 3938159, 4947667, CUM4947667 |
| 6 | Grommet Seals | 3928759 |
| 1 | Push Rod Cover Gasket | 3283767, 3900544, 3903837, 3904056, 3922078, 3928831, CUM3283767 |
| 1 | Oil Pan Gasket | 3900947, 3903393, 3906027, 3911535, 3931602, 3938162, CUM3911535 |
| 1 | Cover Plate Gasket | 3903664, 3904044, 3914304, 3923054, 3931059, 3931348, 3939258, CUM3939258 |
| 1 | Filter Head Gasket | 3901828, 3904426, 3912532, 3918257, 3929792, CUM3929792 |
| 1 | Hydraulic Pump Gasket | 154916, 163027, 4988280 |
| 1 | Gasket | 200094, 3008400 |
| 4 | Piston Cooling Nozzles | 3901020, CUM3901020 |
| 1 | Rear Crankshaft Seal Kit | 3904087, 3904089, 3909410, 3921265, 3925529, 3934486, 4089342, CUM3909410 |
| 1 | Seal Installation Tool | 3909409 |
| 1 | Oil Seal | 3970548 |
| 1 | Seal Installation Tool | 4089425 |
| 1 | Seal Installation Tool | 4940231 |
| 2 | Sealing Washers | 3902425, CUM3902425 |
| 4 | Cooling Nozzles | 3919002, 3930139, 3937214, CUM3937214 |
| 1 | Oil Cooler Core Gasket | 4932124 |
| 1 | Filter Head Gasket | 3942915, 3930907 |
| 1 | Rectangular Ring Seal | 3906696 |
| 1 | Rectangular Ring Seal | 3901856, 3903475 |
| 1 | Front Crank Seal | 3804899, 3900709, 3904351, 3904353, 3937111, CUM3937111 |
Specifications
| Brand | 4BTdiesel |
|---|---|
| Compatible Brand | For CUMMINS |
| Compatible Engine Brand | For CUMMINS |
| Replacement Part Number | OH3957799-4B |
| Condition | New |
Shipping Spec
| Weight | 18.144 kg |
|---|---|
| Dimensions | 71.1 × 41.9 × 33.7 cm |
โ Replace Part Number: OH39577994B
โ Fit for: Cummins 4B engines
โ Built to OEM specs for a proper fit
โ Send us an inquiry for price
Warranty
For new Cummins parts, we provide 90-day warranty. Quality is our commitment. 4BTDiesel ensures your peace of mind! For complete warranty details, please view our Warranty Policy.
Shipping
We ship worldwide and offer full expedited delivery to ensure your construction machinery back in action, fast. Check out our Shipping Policyย for more details.
Easy Return
We prioritize your satisfaction. If your order doesn't meet your expectations within 90 days, you may be eligible for a refund. See our Easy Return Policy for details.
