Cummins 4B Inframe Engine Rebuild Kit, New (IF39577974B)

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.

• Want lasting quality and consistency? You’ve got it with an Inframe Rebuild Kit manufactured and assembled in an ISO 9001:2008 certified facility. 
• Extend and improve the life of your engine with the same, if not better quality compared to the OE at a much lower price! It’s a win-win situation!
• Don’t leave your pistons to chance! Pistons are CNC turned to precise tolerances and maintain proper clearances with computer controlled machining.
• To improve strength within the cylinders, piston pins are hardened and tempered for ultimate wear resistance. They’re tougher than you’re average Joe!
• Why settle for sub-par parts? All components of your kit are built to strict OEM specifications to make certain they fit and operate within your engine correctly.
• Keep oil where it needs to be with oil control rings designed with precise tangential tension for maximum oil control.
• For maximum leak protection, gaskets are made with the correct materials for outstanding performance in functionality and sealability.
• However, to really seal the deal, we include sealing products which are USA made and composed of 100% asbestos-free material.
• Go the extra mile, or a million extra miles with rod and main bearings composed of tri-metal components to ensure long lasting durability.
• Get more bang for your buck with 4BTdiesel! You will receive all new parts with your kit, meaning no core charge!

Kit Contents:

• (4) Piston Kits
• (4) Piston Pins
• (4) Engine Pistons
• (8) Piston Pin Retainers
• (4) 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
• (1) Gasket
• (1) Oil Pan Gasket
• (4) Connecting Rod Bearings
• (4) Connecting Rod Bearings
• (1) 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