Cummins 4B 3.9L, 4B 4.5L Inframe Engine Rebuild Kit, New (IF38027654B)

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 inframe rebuild kit that is manufactured and assembled in an ISO 9001:2008 certified facility. This ensures the best of quality and consistency.
• Want to boost the life of your engine while restoring it to optimal working condition? This kit will help your engine run powerfully and efficiently for another million miles or more.
• Plus, you’ll receive equal or superior quality compared to the OE at much less of an impact to your wallet. That’s more for your money! To top it off, all new parts are included and there is no core charge.
• OE specifications are met to give you the correct fitment and functionality.Don’t let the word “aftermarket” deter you from an important investment!
• The sealing products included are proudly USA made and use 100% asbestos-free material. Also, these materials help gaskets have ultimate performance in functionality and seal ability. Not only are they durable, but they will guarantee zero leakage!
• Want to fortify your engine? Don’t worry, the tri-metal connecting rods and main bearings will give your engine a backbone with long lasting strength and durability. These parts will keep you on the road and not on the side of it.
• You can rely on these piston pins, they are hardened and tempered for an increase in strength and wear resistance.
• We know how important it is to have precise tolerances, that is why the pistons included are CNC turned. Additionally, the pistons are computer control machined to maintain proper clearances.

Kit Contents

• (4) 1.00mm Piston Kits with Pins
• (4) 1.00mm Engine Pistons
• (4) 1.00mm Piston Ring Sets
• (4) 1.00mm Top Piston Rings
• (4) Intermediate Piston Rings
• (4) .040 Oil Piston Rings
• (1) Oil Pan Gasket
• (8) Connecting Rod Bearings
• (1) Main Bearing Set
• (4) Standard Main Bearings
• (4) Standard Main Bearings
• (1) Thrust Bearing
• (1) Upper Engine Gasket Set
• (4) Banjo Seals
• (4) Injector Seals
• (1) Rectangular Ring Seal
• (1) Washer
• (4) Rocker Cover Bolt Seals
• (1) Metal Gasket
• (1) Intake Manifold Gasket
• (2) Washers
• (4) Injector Sleeves
• (8) Valve Stem Seals
• (4) Injector Seals
• (1) Thermostat Seal
• (4) Exhaust Manifold Gaskets
• (1) Turbo Oil Drain Gasket
• (1) Rectangular Ring Seal
• (1) Cylinder Head Gasket
• (4) Valve Cover Gaskets
• (4) Noise Isolators
• (4) Washers
• (1) Gasket
• (1) Sealing Washer

Warranty

6-month warranty.

What Rebuild Kit and Gasket Set Includes