Fast delivery within 72 Hours
Cummins 4B 3.9L, 6B 5.9L, 4B 4.5L Lower Gasket Set, New (4025139)
โ Replace Part Number: 4025139, IV4025139, M-4025139
โ Fit for: Cummins 4B 3.9L, 6B 5.9L, 4B 4.5L 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
These aren’t your grandpa’s gaskets.
A blown gasket can be anything from a minor annoyance to leaving you stranded on the side of the road. You don’t have to put up with whatever gasket you can get your hands on; our gaskets are engineered to withstand anything you throw at it and last well into another million miles. No doubt about it, these are some of the best gaskets on the market.ย
It’s no secret that diesel engine parts can cost an arm and a leg. That’s where 4BTdiesel steps in. We offer premium aftermarket gaskets at up toย 50% off OEM prices. While most believe aftermarket retailers sell cheap gaskets with zero warranty, packed in a dusty box from who knows where, 4BTdiesel is here to kick that stereotype to the curb. 4BTdiesel provides gasketsย fabricated for unstoppable performanceย and aย 6-month warranty. How’s that for an aftermarket part?
Need a little extra proof? Let’s talk shop.
- You’ll receive aย brand new gasket setย that isย manufactured and assembled in an ISO 9001:2008 certified facility.ย This ensuresย unsurpassedย quality and consistency.
- Want to keep on trucking forย another million miles?ย This gasket sets material selection is based uponย pressure, temperature variations, and contact with many fluids and surfaces.ย This helps your engine achieveย maximum performance and increases its longevity.
- Plus, this gasket set is built to strict OE specifications, giving you properย fitment and functionality.ย You can’t beat that!
- Leakage? Never heard of it.ย OEM gasket materials are used throughout for leak free durability.ย This keeps your engine’s fluids where theyย need to be.
- Also,ย correct materialsย have been used toย bring forth top-notch performance in functionality and seal ability.ย To top it off, the sealing products included areย proudly made in the USAย and are composed ofย 100% Asbestos-Free Material.
- Let 4BTdiesel help youย save your money.ย You’ll get quality thatย meets or beats the OE’s at a much lower price. Talk about value!
What Rebuild Kit and Gasket Set Includes
| Qty | Component | Part Number |
|---|---|---|
| 1 | Lower Gasket Set | 4025139 |
| 1 | Rectangular Ring Seal | 3906697, CUM3906697, 3901467 |
| 1 | Seal | 3906698, CUM3906698 |
| 6 | Piston Cooling Nozzles | 4937308, 4892226, 4890024, 3968877 |
| 1 | Filter Head Gasket | 4896409 |
| 1 | Accessory Drive Cover | 4896897 |
| 1 | Oil Pan Gasket | 4934344, 4897861 |
| 1 | Oil Cooler Core Gasket | 4895742, 4896408, 3966601, 3955046 |
| 1 | Oil Seal | 4890832, 5338295, 3955214 |
| 1 | Oil Seal | 4890833 |
| 1 | O-Ring Seal | 145530 |
| 1 | O-Ring Seal | 3089240 |
| 1 | O-Ring Seal | 3330478 |
| 1 | Seal Ring | 3533955 |
| 1 | O-Ring Seal | 3678603 |
| 2 | O-Ring Seals | 3678786 |
| 2 | O-Ring Seals | 3678912 |
| 1 | O-Ring Seal | 3678925, 4944960 |
| 1 | O-Ring Seal | 3679139 |
| 1 | Rectangular Ring Seal | 3906252, CUM3906252 |
| 1 | O-Ring Seal | 3910260 |
| 1 | Coolant O-Ring Seal | 3910517, 3019114, 145580 |
| 1 | O-Ring Seal | 3926047 |
| 1 | O-Ring Seal | 3928624 |
| 1 | O-Ring Seal | 3929457 |
| 1 | Piston Cooling Plug | 3959574 |
| 2 | Sealing Washers | 3963983, 3935171, 3918191, 3903037, 3283280 |
| 1 | O-Ring Seal | 4890088 |
| 12 | O-Ring Seals | 4894095 |
| 1 | Oil Suc Connection Gasket | 4898301 |
| 1 | O-Ring Seal | 4898372 |
| 1 | O-Ring Seal | 4898876 |
Warranty
6-month warranty.
Specifications
| Brand | 4BTdiesel |
|---|---|
| Compatible Brand | For CUMMINS |
| Compatible Engine Brand | For CUMMINS |
| Replacement Part Number | IV4025139, M-4025139, M4025139 |
| Condition | New |
Shipping Spec
| Weight | 2.722 kg |
|---|---|
| Dimensions | 64.1 × 40.0 × 4.4 cm |
โ Replace Part Number: 4025139, IV4025139, M-4025139
โ Fit for: Cummins 4B 3.9L, 6B 5.9L, 4B 4.5L 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.
