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Cummins ISC 8.3L Inframe Engine Rebuild Kit, New (IF4089646)

โ€“ Replace Part Number: IF4089646
โ€“ Fit for: Cummins ISC 8.3L engines
โ€“ Built to OEM specs for a proper fit
โ€“ Send us an inquiry for price

Engine Serial Number (ESN) โ€” Have your engine serial number? Enter it here. We can use it to help review whether this part matches your engine.
SKU: P0265943
30-Day Money Back

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.

  • 30-Day Money Back
  • 2-7 Days Fast Delivery
  • 6 Months Warranty
  • 24/7 Service

Product Details

ย 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.

  • Restore and extend the life of your engine with an Inframe Rebuild Kit that’s built to strict OEM specifications. In other words, this provides the correct fit and function within your engine.ย 
  • It’s time to beef up your cylinders! Engine pistons are CNC turned to precise tolerances and topped with forged articulated piston crowns.ย 
  • To really kick your pistons up a notch, computer controlled machining willmaintain proper clearancesย and pistonย pins are hardened and tempered for greater wear resistance strength. You can’t beat it!ย 
  • To keep your diesel sturdy over time, rod and main bearings are constructed with tri-metal components for long lasting durability.ย ย 
  • Put the OEM to shame! For a smaller cost and no core charge, you will receive all new parts within your Inframe Rebuild Kit with equal or better quality than the OE.
  • Why settle for sub-par parts? To maintain oil control, oil control rings are designed with precise tangential tension.
  • Keep leakage out of your engine with high quality gasket sets made with correct materials for superior performance in functionality and sealibility.
  • Let’s really seal the deal with American made sealing products, crafted from 100% asbestos-free materials.
  • Trust the experts with rebuild kitย manufactured and assembled in an ISO 9001:2008 certified facility. Simply put, it’s quality and consistency you can have confidence in.

Kit Contents:

  • (1) Oil Pan Gasket
  • (1) Oil Pickup Tube Gasket
  • (6) Piston Kits
    • (12) Piston Pin Retainers
    • (6) Piston Ring Sets
      • (6) Oil Piston Rings
      • (6) Compression Piston Rings
      • (6) Compression Piston Rings
    • (6) Piston Pins
    • (6) Piston Crowns
    • (6) Piston Skirts
  • (6) Cylinder Liners
  • (6) Liner Seals
  • (1) Main Bearing Set
    • (7) Top Main Bearings
    • (6) Bottom Main Bearings
    • (1) Thrust Bearing
  • (6) Connecting Rod Bearings
  • (6) Connecting Rod Bearings
  • (1) Upper Engine Gasket Set
    • (1) O-Ring Seal
    • (1) Turbo Hose O-Ring Seal
    • (1) O-Ring Seal
    • (6) Mid-Range XPI Injector Seals
    • (6) Exhaust Manifold Gaskets
    • (1) Turbo Oil Drain Gasket
    • (1) Valve Cover Gasket
    • (2) Sealing Washers
    • (5) Sealing Washers
    • (23) Sealing Washers
    • (1) Breather Mounting Seal
    • (1) Rocker Lever Housing Gasket
    • (2) Connection Gaskets
    • (3) O-Ring Seals
    • (2) O-Ring Seals
    • (6) O-Ring Seals
    • (6) O-Ring Seals
    • (1) Sealing Washer
    • (1) O-Ring Seal
    • (1) Cylinder Head Gasket
    • (24) Valve Stem Seals
    • (1) Gasket Connection
    • (1) O-Ring Seal
    • (2) O-Ring Seals
    • (1) O-Ring Seal
    • (1) Turbocharger Gasket
    • (1) O-Ring Seal
    • (1) Gasket
    • (1) Copper Gasket
    • (1) Air Compressor Drive Support Gasket

Warranty

6-month warranty.

What Rebuild Kit and Gasket Set Includes

Qty Component Part Number
1 Oil Pan Gasket 3938160, CUM3914017, 3934044, 3914017, 3911818, 3906611
1 Oil Pickup Tube Gasket 3939352, CUM3914302, 3914302, 3906202
6 Piston Kits 4089646, CUM4089646
12 Piston Pin Retainers 3920692, CUM3901996, 3901996, 3901922
6 Piston Ring Sets 4089644, 3948412
6 Oil Piston Rings 3921919
6 Compression Piston Rings 3948412
6 Compression Piston Rings 3964073
6 Piston Pins 3950549
6 Piston Crowns 4941392
6 Piston Skirts 3966721, CUM3966721
6 Cylinder Liners 3800328, 3944344, 3948095
6 Liner Seals 3907177, 3917737
1 Main Bearing Set 3945917, 3802210, 3802140, 3800270
7 Top Main Bearings 3944153
6 Bottom Main Bearings 3944158
1 Thrust Bearing 3944163
6 Connecting Rod Bearings 3950661, 3901460, 3901430, CUM3901430
6 Connecting Rod Bearings 3966244
1 Upper Engine Gasket Set 4089758
1 O-Ring Seal 3046201, 172049
1 Turbo Hose O-Ring Seal 3922794, 3883963
1 O-Ring Seal 3931824
6 Mid-Range XPI Injector Seals 3937142
6 Exhaust Manifold Gaskets 5269779, 3943191, 3937479
1 Turbo Oil Drain Gasket CUM3937706, 5264569, 3942725, 3937706, 3931350, 3928919, 3914388, 3819378, 3285747, 3282113
1 Valve Cover Gasket 3959798
2 Sealing Washers 3963983, 3935171, 3918191, 3903037, 3283280
5 Sealing Washers 3963988, 3937155, 3935172
23 Sealing Washers 3963990, 3957427
1 Breather Mounting Seal 3073966
1 Rocker Lever Housing Gasket 3966708, 5272959
2 Connection Gaskets, 3967891,
3 O-Ring Seals 4010519, 3330202
2 O-Ring Seals 4010643
6 O-Ring Seals 4062328, 3972753, 3947540
6 O-Ring Seals 4890926
1 Sealing Washer 4934280, 3963893
1 O-Ring Seal 3627695
1 Cylinder Head Gasket 4981796, 3967059
24 Valve Stem Seals 3948578, 3991267, 3943889, 3943888
1 Gasket Connection 4937032
1 O-Ring Seal 3973512, 3990084, 145533
2 O-Ring Seals 3678603
1 O-Ring Seal 3682177
1 Turbocharger Gasket 3755843, 3016246
1 O-Ring Seal 3883284, CUM3883284
1 Gasket 3901356, CUM3901356
1 Copper Gasket 3920773, 3900216
1 Air Compressor Drive Support Gasket 3685614
Brand4BTdiesel
Compatible BrandFor CUMMINS
Compatible Engine BrandFor CUMMINS
Engine NumberISL
ConditionNew

Shipping Spec

Weight49.895 kg
Dimensions50.8 × 38.1 × 50.8 cm

โ€“ Replace Part Number: IF4089646
โ€“ Fit for: Cummins ISC 8.3L engines
โ€“ Built to OEM specs for a proper fit
โ€“ Send us an inquiry for price

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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.