Cummins 4B Inframe Engine Rebuild Kit, New (IF4089950RGT4B)

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 to extend the life of your engine while restoring it to optimal working condition? This is the rebuild kit for you. Not only will it help your engine run another million miles but it will increase its efficiency and power.
• You’ll receive a brand new inframe rebuild kit that is manufactured and assembled in an ISO 9001: 2008 certified facility. This ensures top-notchquality and consistency.
• Speaking of quality, it will meet or exceed the OE’s at a much lower price. That’s more bang for your buck! To top it off, all new parts are included and there is no core charge.
• Worried about proper fitment and functionality?4BTdiesel has you covered.OE specifications are met to give you the best of both. Don’t let aftermarket parts scare you away!
• The sealing products included are USA made and use 100% asbestos-free material. Not only are they durable, but they will ensure zero leakage!
• Oil leaks? Not happening. The oil control rings are designed with precise tangential tension for proper oil control. It is vital to keep your oil where it needs to be.
• Always on the road? Don’t worry, the tri-metal connecting rods and main bearings will fortify your engine with long lasting strength and durability. These bad boys will keep you on the road and not on the side of it.
• You can count on these piston pins, they are hardened and tempered for improved strength and wear resistance.
• We know how important it is to have precise tolerances, that is why the pistons included are CNC turned to make sure your piston is not out of place. Additionally, the pistons are computer control machined to maintain proper clearances.
• Let’s seal the deal. Correct materials are used in the crafting of the gaskets giving you maximum sealing performance. You can’t beat that!

Kit Contents

• (4) Piston Kits
• (8) Piston Pin Retainers
• (4) Piston Pins
• (4) Engine Pistons
• (4) Piston Ring Sets
• (4) Oil Piston Rings
• (4) Compression Piston Rings
• (4) Compression Piston Rings
• (1) Main Bearing Set
• (4) Top Main Bearings
• (5) Bottom Main Bearings
• (1) Thrust Bearing
• (1) Lower Thrust Bearing
• (4) Connecting Rod Bearings
• (4) Connecting Rod Bearings
• (1) Oil Pan Gasket
• (1) Oil Suction Connection Gasket
• (1) Upper Engine Gasket Set
• (4) O-Ring Seals
• (4) Exhaust Manifold Gaskets
• (1) Cylinder Head Gasket
• (1) Cylinder Head Gasket
• (1) O-Ring Seal
• (2) O-Ring Seals
• (1) Rectangular Ring Seal
• (2) Turbo Hose O-Ring Seals
• (2) O-Ring Seals
• (1) Turbocharger Gasket
• (1) Thermostat O-Ring Seal
• (2) Sealing Washers
• (4) O-Ring Seals
• (4) O-Ring Seals
• (1) Turbo Oil Drain Gasket
• (4) Sealing Washers
• (12) O-Ring Seals
• (2) Sealing Washers
• (1) Rocker Lever Housing Gasket
• (4) Noise Isolators
• (1) Ring Seal
• (1) Filler Cap Gasket
• (1) O-Ring Seal
• (1) O-Ring Seal
• (1) Valve Cover Gasket
• (4) Plain (Copper) Washers

Warranty

6-month warranty.

What Rebuild Kit and Gasket Set Includes