Cummins ISX, QSX APR Single Cam Re-Ring Kit, New (4376391)

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 get a re-ring kit built to OEM specifications which gives you proper fit and function. Also, it is manufactured and assembled in an ISO 9001: 2008 certified facility ensuring excellent quality and consistency.
• Plus, this APR kit features a carbon scraper ring that is designed to prevent carbon build up, increased oil consumption, decreased oil filter flow and increased DPF regeneration.
• Want your rig up and running for another million miles? The piston ring faces are coated with wear resistant materials for extended wear characteristics.
• Already have good pistons? This re-ring kit is a cost-effective option that allows you to reuse those pistons and be back on the road in no time.
• Want the most out of your gaskets? The gaskets in this kit are crafted with proper materials giving you excellent performance in functionality and sealability.
• Additionally, we know how important durability is, that is why the cylinder liners are induction hardened to reduce bore wear. If you want to fortify your engine even more, tri-metal connecting rods and main bearings are included.
• Oil control? We’ve got you covered.. The oil control rings featured are designed with precise tangential tension, this helps keep your oil where it needs to be. Plus, the sealing products are USA made and are 100% asbestos free!

Kit Contents

• (6) Cylinder Liner Kits
• (6) Cylinder Liners
• (6) Carbon Scraper Rings 
• (6) Liner Seals 
• (6) Liner Shims
• (6) ISX Connecting Rod Bearings
• (1) Main Bearing Set
• (7) Upper Main Bearings 
• (7) Lower Main Bearings 
• (4) Standard Crankshaft Thrust Bearings 
• (1) O-Ring Seal
• (1) Bypass Valve Plunger
• (1) Oil Pan Gasket
• (12) Retaining Rings
• (6) Piston Pins
• (6) Piston Ring Sets
• (6) Top Piston Rings
• (6) Second Piston Rings
• (6) Oil Piston Rings 
• (1) Upper Engine Gasket Set

Warranty

6-month warranty.