1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit
1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit

1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit

Industrial Injection SKU: 248120
Piston Size
Price
Regular price $1,19995
Regular price Sale price $1,19995
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1991-1998 5.9L Cummins 12V 6BT X-Series Piston Kit

Industrial Injection X-Series Piston Kits are built for 1991-1998 5.9L Cummins 12V 6BT engine rebuilds, towing applications, and performance diesel builds. Each kit is designed as a drop-in replacement matched piston set and is available in multiple bore sizes to match your engine build.

Choose from Stock Replacement, Coated & Chamfered, or Fly Cut, Coated & Chamfered piston options depending on your engine setup and performance goals.

Stock Piston Kit Features

  • Fits 1991-1998 5.9L Cummins 12V 6BT engines
  • Drop-in replacement matched piston set
  • Complete with rings, wrist pins, and clips
  • Available in Standard, .020", and .040" sizes
  • Ceramic piston skirt coating for reduced friction
  • Ideal for OEM-style rebuilds, towing applications, and reliable performance upgrades

Coated & Chamfered Piston Kit Features

  • Fits 1991-1998 5.9L Cummins 12V 6BT engines
  • Drop-in replacement matched piston set
  • Complete with rings, wrist pins, and clips
  • Available in Standard, .020", and .040" sizes
  • Chamfered piston tops to help reduce cylinder wall scuffing
  • Thermal barrier coating on piston tops
  • Ceramic piston skirt coating for reduced friction
  • .015" reduced compression height
  • Designed for increased cylinder pressure, elevated boost, heavy towing, and performance diesel builds

Fly Cut, Coated & Chamfered Piston Kit Features

  • Fits 1991-1998 5.9L Cummins 12V 6BT engines
  • Drop-in replacement matched piston set
  • Complete with rings, wrist pins, and clips
  • Available in Standard, .020", and .040" sizes
  • Chamfered piston tops to help reduce cylinder wall scuffing
  • Thermal barrier coating on piston tops
  • Ceramic piston skirt coating for reduced friction
  • .015" reduced compression height
  • .100" fly cut valve reliefs for additional piston-to-valve clearance
  • Ideal for high-performance builds using higher-lift camshafts or requiring added valve clearance

Available Sizes

  • Standard
  • .020" Oversize
  • .040" Oversize

Choosing the Right Piston Option

Stock Replacement pistons are a strong choice for standard rebuilds, tow rigs, and reliable engine setups. Coated & Chamfered pistons add piston top coating, skirt coating, chamfered piston tops, and reduced compression height for more demanding Cummins builds. Fly Cut, Coated & Chamfered pistons add .100" valve reliefs for builds that require additional piston-to-valve clearance.

Supersedes Previous Part Numbers

  • PDM-03513 - Stock Replacement (Standard)
  • PDM-03513.020 - Stock Replacement (.020")
  • PDM-03513.040 - Stock Replacement (.040")
  • PDM-03513CC - Coated & Chamfered (Standard)
  • PDM-03513CC.020 - Coated & Chamfered (.020")
  • PDM-03513CC.040 - Coated & Chamfered (.040")
  • PDM-03513FCC - Fly Cut, Coated & Chamfered (Standard)
  • PDM-03513FCC.020 - Fly Cut, Coated & Chamfered (.020")
  • PDM-03513FCC.040 - Fly Cut, Coated & Chamfered (.040")

Product Spec Sheet: Click Here

Important Note

Confirm bore size, compression height, and piston-to-valve clearance requirements before ordering. For performance builds or modified engines, consult your engine builder to verify the correct piston setup.
Shipping information

Free economy ground shipping on most orders over $200. This includes lower 48 United States only. Excludes products that must ship freight.

Core Return Info

Read Carefully!

When you purchase a product from our website that has a core requirement, you have two options:

1. You choose to pay the core charge and we will ship the product right away, then once we receive the cores you will be refunded the core charge if your cores pass our inspection qualifications. This is the preferred choice and has the least delays. 

2. You choose to send in your cores before we ship the product that was purchased. This choice has the risk of delayed shipment of your purchased product and our inventory is not guaranteed by the time we receive your cores. You will need to follow all of the instructions below as quickly as possible so that you can get your purchased product and we can receive the cores. When you choose this option you acknowledge that by the time we receive your cores, our inventory could have change and there could be a delay in your shipment. 

 

Please return all cores to:



Industrial Injection Core Returns
2858 South 300 West
Salt Lake City, Utah 84115

INCLUDE RA# THAT WAS ISSUED AT TIME OF PURCHASE! If RA # is lost, please call Customer Service at (800) 955-0476. Have your original invoice at time of phone call to give all appropriate information for return.

Core return freight is the responsibility of the customer

FULL CREDIT WILL BE GIVEN WHEN: 

In order to receive full core credit, your core(s) must be returned within 90 days from receipt of order. It must be as is “off the engine.” Full core credit will be given if core meets acceptance criteria. Cores that are damaged during shipment to Industrial Injection are the responsibility of the customer and their shipping company.

½ CORE CHARGE CREDIT WILL BE GIVEN WHEN:

  • Slightly damaged housing or camshaft
  • Missing parts such as FCA

No Core Credit issued when:

  • Core is seized or hydraulic head is cracked
  • Excessive damage ( Heavy use of Bio-diesel and rust are common causes for unacceptable core)
  • Core is fire damaged
  • Core is returned after 90 days/3months

Please do the following when returning a core:

  • Make sure you have removed all fittings from your old unit
  • Drain all fuel and oil from unit
  • Package cores so that fuel and oil does not escape from the package

NOTE: packages that have fuel or oil residue on the outside of the box during shipping will not be delivered by UPS or the postal service which will cause delays.

  • Please re-use boxes and bags that parts were shipped in originally. These boxes are UPS approved to reduce damage while being handled in freight.
  • All shipping charges are the responsibility of the customer
  • Please write on the box “Core Return” and have RA # clearly written on the outside of box
  • Include copy of original invoice and RGA inside box

PLEASE RETAIN RA#, INVOICE # AND TRACKING NUMBER UNTIL CREDIT IS RECEIVED BY YOU. We do not research by customer name, only invoice # or RA #.
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