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Cummins 6B 5.9L Engine Rebuild Kit, New (6B4051)
โ Replace Part Number: 6B4051, 6BS104-051
โ Fit for: Cummins 6B 5.9L 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.
- Don’t settle for sub-par parts. This Engine Kit was made to strict OEM specifications in an ISO 9001:2015 Certified Facility, ensuring quality and consistency.
- Think you’re tough? The piston pins in this kit were hardened and tempered for improved strength and wear resistance, making your engine stronger than ever.
- In addition, tri-metal construction rod and main bearings are included for durability. You can’t beat that.
- You’ll want to “seal” this deal. We’ve made sure that the correct materials were used to ensure that the gaskets in this kit have excellent performance in functionality and sealability.
- Want accuracy? You’ve got it. The pistons were CNC turned to precise tolerances and computer controlled piston machining was utilized to maintain proper clearances.
- Bring your engine back to the glory days. A new Engine Kit will restore and extend the life of your engine for a million more miles.
- Want to save some coin? We’ve got your back. This Engine Kit comes brand new with no core charge and is offered at equal or better quality compared to the OE โ just at a lower price.
Kit Contents:
- (12) Rod Bearings
- (1) Main Bearing Kit
- (6) Standard Main Bearings
- (1) Thrust Bearing
- (7) Standard Main Bearings
- (6) Piston Kits
- (1) 1.0mm Piston
- (1) Piston Pin
- (2) Retainers
- (1) Ring Set
- (1) Upper Gasket Set
- (1) Head Gasket
- (6) Copper Sleeves
- (6) Copper Gaskets
- (12) Valve Seals
- (1) Gasket
- (6) Copper Washers
- (1) Oil Filler Seal
- (1) Thermostat Seal
- (1) Oil Pan Seal
- (6) Exhaust Manifold Gaskets
- (6) Fuel Seals
- (6) Bolt Seals
- (6) Copper Washers
- (6) Gaskets
- (1) Ring
- (1) Gasket
- (1) Plug Seal
- (1) Oil Gasket
- (6) O-Rings
- (1) Exhaust Gasket
- (6) Copper Washers
- (2) Fuel Seals
- (2) Inlet Gaskets
- (2) Fuel Seals
- (1) Bolt Gauge
- (1) Lower Gasket Set
- (1) Pump Gasket
- (1) Rectangular Seal
- (1) Gasket
- (1) Gasket
- (1) O-Ring
- (1) Gasket
- (1) Cover Gasket
- (1) Gasket
- (1) Fuel Gasket
- (1) Ring
- (6) Cooling Nozzles
- (1) Ring
- (1) Oil Pan Gasket
- (2) Oil Pan Seals
- (6) Cooling Nozzles
- (1) Rectangular Seal
- (1) Gear Gasket
- (1) Gasket
- (1) Timing Gasket
- (1) Filter Gasket
- (1) Gasket
- (1) Ring
- (8) Side Seals
- (1) Water O-Ring
- (1) Gasket
- (1) Cover Gasket
- (1) Supply Gasket
- (1) Ring
- (1) Drain Seal
- (1) Pump Gasket
- (1) Rear Seal
- (1) Crank Seal
- (1) Sleeve Installation Seal
- (1) Driver Installation Seal
- (1) Seal/Ring Kit
- (1) Seal
- (1) Wear Ring
Warranty
6-month warranty.
What Rebuild Kit and Gasket Set Includes
| Qty | Component | Part Number |
|---|---|---|
| 12 | Rod Bearings | CUM3901170, 3969562, 3939859, 3901230, 3901170 |
| 1 | Main Bearing Kit | 861260, 4955853, 3802070, 3800290 |
| 6 | Standard Main Bearings | 3901090 |
| 1 | Thrust Bearing | 3906230 |
| 7 | Standard Main Bearings | 3901150 |
| 6 | Piston Kits | CUM3802174, 3802174 |
| 1 | 1.0mm Piston | CUM3912050, 3912050 |
| 1 | Piston Pin | CUM3901793, 3934048, 3901793 |
| 2 | Retainers | CUM3901706, 3920691, 3901706, 3284366 |
| 1 | Ring Set | K3802234, HE380205-40, CUM3802234, 3802234, 3802054 |
| 1 | Upper Gasket Set | 3802025, 3802026, 3802226, 3802243, 3802363, 3804897, CUM3802245 |
| 6 | Copper Sleeves | 3919358 |
| 6 | Copper Gaskets | 675477C1 |
| 12 | Valve Seals | CUM3921640, 3921640, 3921639, 3901097 |
| 1 | Gasket | CUM3901356, 3901356 |
| 6 | Copper Washers | 3923261 |
| 1 | Oil Filler Seal | 3936876, 3902363 |
| 1 | Thermostat Seal | CUM3923331, 3923331, 3920020, 3903301 |
| 1 | Oil Pan Seal | CUM3902425, 3902425 |
| 6 | Exhaust Manifold Gaskets | C3927154, 3927154, 3905443, 3901456 |
| 6 | Fuel Seals | CUM3903380, 4942278, 3903380 |
| 6 | Bolt Seals | 3935449, 3928406 |
| 6 | Copper Washers | 3906659 |
| 6 | Gaskets | J930906, HE3902666, CUM3930906, C3930906, 3930906, 3902666, 3902494 |
| 1 | Ring | 3906694 |
| 1 | Gasket | CUM3931347, 3938152, 3931347, 3914029, 3902002 |
| 1 | Plug Seal | 3906773 |
| 1 | Oil Gasket | CUM3937706, 5264569, 3942725, 3937706, 3931350, 3928919, 3914388, 3819378, 3285747, 3282113 |
| 6 | O-Rings | CUM3883284, 3883284 |
| 1 | Exhaust Gasket | 3912220, 3903251 |
| 6 | Copper Washers | 3930324 |
| 2 | Fuel Seals | 3918188, 3903728 |
| 2 | Inlet Gaskets | CUM3931604, 3969988, 3949473, 3938158, 3931604, 3913352 |
| 2 | Fuel Seals | 3963988, 3937155, 3935172 |
| 1 | Bolt Gauge | 3823921 |
| 1 | Lower Gasket Set | 3802376, 3802267, 3802029 |
| 1 | Pump Gasket | 3558515, 3069099, 3004242 |
| 1 | Rectangular Seal | CUM3912473, 3912473, 3906699 |
| 1 | Gasket | CUM3931349, 3938157, 3931349, 3914383, 3905468, 3900454 |
| 1 | Gasket | 3008400, 200094 |
| 1 | O-Ring | 3913994, 102827 |
| 1 | Gasket | CUM3931351, 3940182, 3938156, 3931351, 3916131, 3914384, 3907836, 3902364 |
| 1 | Cover Gasket | CUM3284623, 3928832, 3907617, 3904776, 3900545, 3284623 |
| 1 | Gasket | CUM3914385, 3914385, 3910500, 3905143, 3904492, 3902369 |
| 1 | Fuel Gasket | 3939355, 3931607 |
| 1 | Ring | 3915772, 3914092, 3906693 |
| 6 | Cooling Nozzles | 3901020 |
| 1 | Ring | 3915800 |
| 1 | Oil Pan Gasket | CUM3911536, 3959052, 3937072, 3931346, 3911536, 3906028, 3904577, 3901287 |
| 2 | Oil Pan Seals | CUM3902425, 3902425 |
| 6 | Cooling Nozzles | 3937214 |
| 1 | Rectangular Seal | 3903475, 3901856 |
| 1 | Gear Gasket | CUM3918673, 3918673, 3916401 |
| 1 | Gasket | 4932124, 3942914, 3929791, 3926760, 3918256, 3914387, 3904427, 3903318 |
| 1 | Timing Gasket | 3905595, 3903926, 3902629 |
| 1 | Filter Gasket | 3942915, 3930907 |
| 1 | Gasket | CUM4947667, 4947667, 3938159, 3928493, 3914386, 3901019 |
| 1 | Ring | CUM3906697, 3906697, 3901467 |
| 8 | Side Seals | 3928759 |
| 1 | Water O-Ring | CUM3906698, 3906698 |
| 1 | Gasket | CUM3929792, 3929792, 3918257, 3912532, 3904426, 3901828 |
| 1 | Cover Gasket | 3908096, 3902734 |
| 1 | Supply Gasket | CUM3939258, 3939258, 3931348, 3931059, 3923054, 3914304, 3904044, 3903664 |
| 1 | Ring | 3906696 |
| 1 | Drain Seal | 3920773, 3900216 |
| 1 | Pump Gasket | 3918340 |
| 1 | Rear Seal | K4089342, CUM3909410, 4089342, 3934486, 3925529, 3921265, 3909410, 3904089, 3904087 |
| 1 | Crank Seal | CUM5259499, 5259499 |
| 1 | Sleeve Installation Seal | 4089425 |
| 1 | Driver Installation Seal | 4940231 |
| 1 | Seal/Ring Kit | CUM3802820, 3904355, 3802820 |
| 1 | Seal | 3922598 |
| 1 | Wear Ring | CUM3922599, 3922599 |
Specifications
| Brand | 4BTdiesel |
|---|---|
| Compatible Brand | For CUMMINS |
| Compatible Engine Brand | For CUMMINS |
| Engine Number | 6B 5.9L |
| Replacement Part Number | 6BS104-051 |
| Condition | New |
Shipping Spec
| Weight | 18.915 kg |
|---|---|
| Dimensions | 79.1 × 21.9 × 36.2 cm |
โ Replace Part Number: 6B4051, 6BS104-051
โ Fit for: Cummins 6B 5.9L 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.
