Fast delivery within 72 Hours
Cummins 4B 3.9L, 6B 5.9L, 4B 4.5L Inframe Engine Rebuild Kit, New (IF4089618)
โ Replace Part Number: IF4089618
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?ย
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 sellย Rebuild Kits with new parts, zero core charges, and a 6-month warranty.ย On top of only offering premium quality parts, we also make sure youย save up to 50% off OEM prices.ย So, when it comes to your rebuild, what’s left to want?ย
Need a little extra proof? Let’s talk Rebuild Kits.
- Your brand new rebuild kitย is built toย OEM specifications giving you equal or better quality at a lower price.ย It doesn’t get much better than that!
- You’ll haveย peace of mindย knowing these piston pins areย hardened and tempered for improved strength and wear resistance.
- Plus, this piston isย manufactured and assembled in an ISO 9001:2008 certified facility.ย Simply put, quality and consistency you can count on.
- The rod and main bearings areย constructed with tri-metal for durability.ย This will keep yourย engineย running for another million miles.
- Here’s a fun fact about our gaskets, only the correct materials areused.ย This is going to give youย leak free durability along with functionality and sealabilty.
- You will sleep soundly knowing our sealing products are made in the USAย and composed ofย 100% asbestos-free material.ย This ensuresย long lasting strength and durability.
- At 4BTdiesel, we knowย time is money.ย Our kit components are packed inย sub-assemblies by function, making installation easy,ย getting your rigย back up and running in no time!
Kit Contents:
- (1) Oil Pan Gasket
- (1) Gasket
- (6) .50mm Piston Kits
- (12) Piston Pin Retainers
- (6) Piston Pins
- (6) .50mm Engine Pistons
- (6) .50mm Piston Ring Sets
- (6) Compression Piston Rings
- (6) Compression Piston Rings
- (6) Oil Piston Rings
- (1) Main Bearing
- (6) Connecting Rod Bearings
- (6) Connecting Rod Bearings
- (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 Gasketย
- (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 |
|---|---|---|
| 1 | Oil Pan Gasket | 3901287, 3904577, 3906028, 3911536, 3931346, 3937072, 3959052, CUM3911536 |
| 1 | Gasket | 3900454, 3905468, 3914383, 3931349, 3938157, CUM3931349 |
| 6 | .50mm Piston Kits | 4089618 |
| 12 | Piston Pin Retainers | 3284366, 3901706, 3920691, CUM3901706 |
| 6 | Piston Pins | 3919053, 3934047, CUM3934047 |
| 6 | .50mm Engine Pistons | 3957417 |
| 6 | .50mm Piston Ring Sets | 4089614 |
| 6 | Compression Piston Rings | 3904347 |
| 6 | Compression Piston Rings | 3937428 |
| 6 | Oil Piston Rings | 3933585 |
| 1 | Main Bearing | 3800290, 3802070, 4955853, 861260 |
| 6 | Connecting Rod Bearings | 4893693 |
| 6 | Connecting Rod Bearings | 3901170, 3901230, 3939859, 3969562, CUM3901170 |
| 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 | 110.5 × 33.0 × 34.3 cm |
โ Replace Part Number: IF4089618
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.
