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MidRange Overhaul Kit Program   

Every Overhaul. Genuine.

When you've got a Cummins B3.9, B5.9, C8.3, ISB 5.9, QSB 6.7, ISC 8.3, and QSL 9 engine that needs an overhaul, there's a genuine advantage to using a Cummins MidRange Overhaul Kit. These kits come complete with every part you need to perform a total overhaul, from rings and pistons to bearings and gaskets. Every component is engineered with the latest improvements, built and tested to meet rigid Cummins quality standards.Plus, they come with full warranty coverage for up to one year, 100,000 miles or 3,600 hours of operation or specified maintenance interval, whichever occurs first, after the date of first installation.

Every Order. Made Easy.

Rather than having to look up and order each part separately, you can now order complete Overhaul Kits with just one part number. To ensure that you are getting the right parts, go to a nearby authorized Cummins parts and service location with your engine model and year, or better yet, your engine's serial number (which can be found on the engine data plate).

MidRange Overhaul Kits Include:

 

B3.9

B5.9

C8.3/ISC

Pistons

4

6

6

Piston Pins

-

-

6

Piston Pin Retaining Rings

8

12

12

Piston Ring Sets

4

6

6

Connecting Rod Bearings

8

12

12

Upper Main Bearings

4

6

6

Lower Main Bearings

5

7

7

Crankshaft Thrust Bearing

1

1

1

Cylinder Liners

-

-

6

Cylinder Liner Seals

-

-

6

Upper Engine Gasket Sets

1

1

1

Lubricating Oil Pan Gasket

1

1

-

MR Overhaul Kit and CPL Cross Reference Tables

Please use this table as an alternative quick reference to find the overhaul kit part number based on either the piston part number or the engine CPL that you need to overhaul. Follow next steps:
                 - Please use the most recent piston part number as first reference to find the overhaul kit.
                 - If you do not have the piston part number, then use the engine CPL.
                 - To view a larger, printable version, please click on the chart to download a PDF.

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