Cummins 4B 3.9L, 6B 5.9L, 4B 4.5L Inframe Engine Rebuild Kit, New (IF3800327)

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.

• Thinking about the glory days of your engine? Let’s turn back the clock. A brand new rebuild kit will not only restore your engine to good working condition but also extend the life of your engine.
• Here at 4BTdiesel all we know is excellent quality. This inframe rebuild kit is not only made to OEM Specifications but also was manufactured and assembled in an ISO 9001:2015 Certified
  Facility. This ensures you will get quality and consistency.
• Trying to save a buck without sacrificing quality? Our inframe rebuild kits have equal or better quality compared to the OE at a much lower price.
• Nobody likes hand me downs. That’s why we give you all new parts with no charge when you buy our inframe rebuild kits.
• Your gaskets should be tight, out of sight and out of mind. Correct materials ensure gaskets have excellent performance in functionality and sealability.
• Think you’re tough? These Pistons are hardened and tempered for improved strength and wear resistance.
• Precision is our middle name. This inframe rebuild kit comes with a CNC turned piston to precise tolerances. Plus, we use computer controlled piston machining to maintain proper clearances.
• Our rod and main bearings are built to last. Crafted with tri-metal construction to keep your engine up and running for another million miles or more.
• Let’s “seal” the deal. USA made sealing products use 100% asbestos-free material. 

Kit Contents:

• (6) 1.0mm Piston Kits
• (6) Pistons Pins
• (12) Pistons Pin Retainers
• (6) 1.00mm Engine Pistons
• (6) 1.00mm Piston Ring Sets
• (1) Main Bearing
• (12) Connecting Rod Bearings
• (1) Oil Pan Gasket
• (1) Gasket
• (1) Upper Engine Gasket Set
• (2) O-Ring Seals
• (1) Turbo Oil Drain Gasket
• (1) Intake Manifold Gasket
• (5) Isolators
• (12) Valve Stem Seals
• (12) Valve Stem Seals
• (6) Gaskets
• (2) Gaskets
• (1) Turbocharger Gasket
• (1) Cylinder Head Gasket
• (1) Turbocharger Gasket
• (6) O-Ring Seals
• (1) O-Ring Seal
• (1) Sealing Washer
• (2) Turbo Hose O-Ring Seals
• (1) O-Ring Seal
• (1) Valve Cover Gasket

Warranty

6-month warranty.

What Rebuild Kit and Gasket Set Includes