Cummins 4B Inframe Engine Rebuild Kit, New (IF39577994B)

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.

• Put the OE to shame! Restore and extend the life of your engine with an all new Inframe Rebuild Kit built to OEM specifications. This ensures proper fit and function in your engine to get you back up and running in no time.
• Why sacrifice quality if you don’t have to? Receive equal or better quality compared to the OE. The kicker? It’s all for a much lower price.
• Get more out of your cylinders with pistons that are CNC turned to precise tolerances and have computer controlled machining to maintain correct clearances.
• To sweeten the deal, piston pins are also hardened and tempered for upgraded strength and wear resistance!
• Who wouldn’t want excellent quality paired with long lasting consistency? To ensure you get the best of both, your Inframe Rebuild Kit is manufactured and assembled in an ISO 9001:2008 certified facility.
• Keep your engine properly lubricated with gaskets crafted with the correct materials. This makes certain they have tiptop performance in functionality and sealibility. 
• Also, make sure to keep your engine running great with sealing products proudly made in the USA and from 100% asbestos-free material.
• 4BTdiesel wants you to get more bang for your buck! All components of your rebuild kit are brand new, so it does not include a core charge!
• Alongside fluids, keep oil in place with oil control rings designed with precise tangential tension for proper oil control to keep your engine well lubricated. 
• Keep your engine sturdy over time with connecting rod and main bearing made from tri-metal materials for long lasting durability. 

Kit Contents:

• (4) .50mm Piston Kits
• (8) Piston Pin Retainers
• (4) Piston Pins
• (4) .50mm Engine Pistons
• (4) .50mm Piston Ring Sets
• (4) Oil Piston Rings
• (4) Compression Piston Rings
• (4) Compression Piston Rings
• (1) Main Bearing Set
• (4) Main Bearings
• (4) Main Bearings
• (1) Thrust Bearing
• (4) Connecting Rod Bearings
• (4) Connecting Rod Bearings
• (1) Gasket
• (1) Oil Pan Gasket
• Upper Engine Gasket Set
• (1) Cylinder Head Gasket
• (2) Washers
• (4) Injector Sleeves
• (4) Injector Seals
• (1) Thermostat Seal
• (4) Exhaust Manifold Gaskets
• (4) Valve Cover Gaskets
• (4) Noise Isolators
• (1) Rectangular Ring Seal
• (4) Mid Range XPI Injector Seals
• (4) Washers
• (1) Turbo Oil Drain Gasket
• (1) Intake Manifold Gasket
• (8) Valve Stem Seals
• (1) Gasket
• (1) Sealing Washer
• (4) Banjo Seals
• (1) Rectangular Ring Seal
• (1) Washer
• (4) Rocker Cover Bolt Seals
• (1) Metal Gasket

Warranty

6-month warranty.

What Rebuild Kit and Gasket Set Includes