Cummins 4B 3.9L, 6B 5.9L, 4B 4.5L Inframe Engine Rebuild Kit, New (IF4089260RGT)

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.

• You’ll receive a brand new rebuild kit that is manufactured and assembled in an ISO 9001:2008 certified facility. This ensures  the best of quality and consistency.
• If you want to bring your engine to top-notchworking condition and increase it’s longevity, this is the rebuild kit for you. Plus, you’ll get rod and main bearings crafted with tri-metal material to ensure long lasting strength and durability.
• Think you’re tough? These piston pins sure are. They are hardened and tempered for improved strength and wear resistance. Extreme conditions? Not an issue for these bad boys. 
• The sealing products you will get are proudly USA made and use 100% Asbestos-Free Material. If that isn’t enough, the correct materials are used for optimal sealing performance.
• Leakage? Never heard of it. The oil control rings included are designed with precise tangential tension for proper oil control. You can’t beat it!
• You’ll sleep soundly knowing the pistons included are CNC turned to precise tolerances and computer control machined to maintain proper clearances. 
• Also, the parts will fit and function properly due to OE specifications being met. This gives you peace of mind. 
• Want to save some money? We’ve got you covered.Quality meets or exceeds the OE’s at a much lower price. To top it off, all new parts are included and there is no core charge. That’s more cash in your pocket!

Kit Contents

• (6) Connecting Rod Bearings
• (1) Main Bearing
• (6) Connecting Rod Bearings
• (1) Flange Gasket
• (1) Oil Pan Gasket
• (6) Piston Kits
• (12) Piston Pin Retainers
• (6) Piston Pin
• (6) Engine Piston
• (6) Piston Ring Set
• (6) Compression Piston Rings
• (6) Oil Piston Rings
• (6) Compression Piston Rings
• (1) Upper Engine Gasket Set
• (2) O-Ring Seals
• (1) Turbo Hose O-Ring Seal
• (1) O-Ring Seal
• (1) Rocker Cover Gasket
• (1) Seal
• (6) O-Ring Seals
• (1) Intake Manifold Cover Gasket
• (1) Exhaust Recirculation Valve Gasket
• (4) Connection Gaskets
• (1) Rectangular Seal
• (1) Turbo O-Ring Seal
• (2) O-Ring Seals
• (6) O-Ring Seals
• (1) Thermostat Seal
• (1) Copper Gasket
• (1) Accessory Drive Cover Gasket
• (1) O-Ring Seal
• (1) O-Ring Seal
• (2) O-Ring Seal
• (21) Sealing Washers
• (6) Midrange XPI Injector Seals
• (6) O-Ring Seals
• (1) Rocker Cover Housing Gasket
• (4) Lock Plates
• (1) Oil Drain Gasket
• (3) Sealing Washers
• (10) Sealing Washers
• (4) Sealing Washers
• (4) Sealing Washers
• (2) Gaskets
• (6) Exhaust Manifold Gaskets
• (1) O-Ring Seal
• (1) Cylinder Head Gasket
• (1) Cylinder Head Gasket
• (1) Turbocharger Gasket

Warranty

6-month warranty.

What Rebuild Kit and Gasket Set Includes