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Cummins 4B 3.9L, 6B 5.9L, 4B 4.5L Inframe Engine Rebuild Kit, New (IF3806270)
โ Replace Part Number: IF3806270
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
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.
- Improve and lengthen the life of your engine with a Inframe Rebuild Kit built to OEM specifications. You can sleep soundly knowing all components will fit in your engine correctly.
- To ensure you receive the quality and consistency you depend on, your kit is manufactured and assembled in an ISO 9001:2008 certified facility!
- Leakage? Not with this kit! Gaskets are made with the correct materials for outstanding performance in functionality and sealibility.ย
- To really seal the deal, we include sealing products which are USA made and have 100% asbestos-free material.
- Beef up your pistons with pins hardened and tempered to precise tolerances for greater strength and longer wear resistance.
- Not enough? We’ll maximize your cylinder power with CNC turned pistons and computer controlled piston machining to maintain proper clearances. You can’t beat it!
- Get more bang for your buck! Receive all new parts of equal or better quality compared to the OE, at a much lower rate and no core charge!
- It’s vital to keep your engine properly lubricated. To maintain proper oil control, oil control rings are designed with precise tangential tension.
- Want long lasting durability? You can get just that with main and rod bearings built with tri-metal elements to keep you running for another million miles!
Kit Contents:
- (6) Piston Kits
- (6) Piston Pins
- (12) Piston Pin Retainers
- (6) Engine Pistons
- (6) Turbocharger Piston Ring Sets
- (6) Top Keystone Piston Rings
- (6) Oil Control Piston Rings
- (6) Intermediate Piston Rings
- (1) Main Bearing
- (6) Connecting Rod Bearings
- (6) Connecting Rod Bearings
- (1) Oil Pan Gasket
- (1) Gasket
- (1) Upper Engine Gasket Set
- (6) Rocker Cover Bolt Seals
- (1) Metal Gasket
- (2) Washers
- (6) Injector Sleeves
- (6) Injector Seals
- (1) Thermostat Seal
- (6) Injector Seals
- (6) Valve Cover Gaskets
- (6) Noise Isolators
- (1) Rectangular Ring Seal
- (1) Cylinder Head Gauge
- (6) Mid Range XPI Injector Seals
- (1) Turbo Oil Drain Gasket
- (1) Intake Manifold Gasket
- (2) Gaskets
- (2) Sealing Washers
- (6) Exhaust Manifold Gaskets
- (12) Valve Stem Seals
- (1) O-Ring Seal
- (1) Cylinder Head Gasket
- (6) Washers
- (1) Gasket
- (1) Sealing Washer
- (6) Banjo Seals
- (1) Rectangular Ring Seal
- (1) Washer
Warranty
6-month warranty.
What Rebuild Kit and Gasket Set Includes
| Qty | Component | Part Number |
|---|---|---|
| 6 | Piston Kits | 3806270, 3926990 |
| 6 | Piston Pins | 3934047, CUM3934047, 3919053 |
| 12 | Piston Pin Retainers | 3920691, CUM3901706, 3901706, 3284366 |
| 6 | Engine Pistons | 3926990, 3806270 |
| 6 | Turbocharger Piston Ring Sets | 3802421, CUM3802230, 3802746, 3802230, 3802056, 3802050 |
| 6 | Top Keystone Piston Rings | 3918315 |
| 6 | Oil Control Piston Rings | 3932520 |
| 6 | Intermediate Piston Rings | 3902286 |
| 1 | Main Bearing | 3802070, 861260, 4955853, 3800290 |
| 6 | Connecting Rod Bearings | 3969562, CUM3901170, 3939859, 3901230, 3901170 |
| 6 | Connecting Rod Bearings | 4893693 |
| 1 | Oil Pan Gasket | 3959052, CUM3911536, 3937072, 3931346, 3911536, 3906028, 3904577, 3901287 |
| 1 | Gasket | 3938157, CUM3931349, 3931349, 3914383, 3905468, 3900454 |
| 1 | Upper Engine Gasket Set | 4089649 |
| 6 | Rocker Cover Bolt Seals | 3910824, 3901837 |
| 1 | Metal Gasket | 3912220, 3903251 |
| 2 | Washers | 3918188, 3903728 |
| 6 | Injector Sleeves | 3919358, CUM3919358 |
| 6 | Injector Seals | 3923261, 3919725, CUM3923261 |
| 1 | Thermostat Seal | 3923331, CUM3923331, 3920020, 3903301 |
| 6 | Injector Seals | 3930324 |
| 6 | Valve Cover Gaskets | 3930906, 3902666, 3902494 |
| 6 | Noise Isolators | 3935449, 3928406 |
| 1 | Rectangular Ring Seal | 3936876, 3902363 |
| 1 | Cylinder Head Gauge | 3823921, CUM3823921 |
| 6 | Mid Range XPI Injector Seals | 3937142 |
| 1 | Turbo Oil Drain Gasket | 3937706, CUM3937706, 5264569, 3942725, 3931350, 3928919, 3914388, 3819378, 3285747, 3282113 |
| 1 | Intake Manifold Gasket, 3938152, CUM3931347, 3931347, | |
| 2 | Gaskets | 3969988, CUM3931604, 3949473, 3938158, 3931604, 3913352 |
| 2 | Sealing Washers | 3963988, 3937155, 3935172 |
| 6 | Exhaust Manifold Gaskets | 3929881 |
| 12 | Valve Stem Seals | 3957912 |
| 1 | O-Ring Seal | 3883284, CUM3883284 |
| 1 | Cylinder Head Gasket | 3283335, CUM3283335, 3921394, 3918305, 3917358, 3917357, 3915730, 3908997, 3907057, 3905026, 3283570, 3283192, 3282805 |
| 6 | Washers | 3900808 |
| 1 | Gasket | 3901356, CUM3901356 |
| 1 | Sealing Washer | 3902425, CUM3902425 |
| 6 | Banjo Seals | 3903380, CUM3903380, 4942278 |
| 1 | Rectangular Ring Seal | 3906694 |
| 1 | Washer | 3906773 |
Specifications
| Brand | 4BTdiesel |
|---|---|
| Compatible Brand | For CUMMINS |
| Compatible Engine Brand | For CUMMINS |
| Condition | New |
Shipping Spec
| Weight | 16.329 kg |
|---|---|
| Dimensions | 71.1 × 41.9 × 33.7 cm |
โ Replace Part Number: IF3806270
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.
