Piston Kits For Cummins Marine & Industrial Engines

At Diesel Pro Power, we carry a comprehensive range of Cummins piston kits engineered to meet the demands of marine and industrial diesel engines. Our piston kits are built for durability, performance, and exact fitment—helping you get back up and running quickly and confidently.

Whether you're maintaining a commercial vessel with a QSB 7, overhauling a KTA19, or replacing pistons in an X15, you'll find the correct piston kits and accessories at Diesel Pro Power.

Why Buy Cummins Piston Kits from Diesel Pro Power?

• Accurate Fitment by Engine Model

• High-Quality Materials and Coatings

• Expert Technical Assistance

• Same-Day Worldwide Shipping

Each kit includes piston, wrist pin, retaining clips, and rings. Some models offer standard and oversize options for engines that have been re-bored or previously overhauled.

Cummins Piston Kits by Engine Model

Below is a detailed breakdown of supported models. Each includes a direct callout to the specific Piston Kit Catalog for that model.

Cummins 4B

Applications: Marine generators, industrial pumps

Piston Kit Catalog for Cummins 4B

• Piston Kit for Cummins 4B

• Salvage Sleeve – Standard for Cummins 4B

• Piston Ring Set for Cummins 4B

Cummins 4BT

Applications: Marine auxiliary engines, industrial skids

Piston Kit Catalog for Cummins 4BT

• Piston Kit for Cummins 4BT
  
  
• Salvage Sleeve – Standard for Cummins 4BT
  
  
• Piston Ring Set for Cummins 4BT

Cummins 4BTA

Applications: Compact marine power, commercial fishing vessels

Piston Kit Catalog for Cummins 4BTA

• Piston Kit for Cummins 4BTA
  
  
• Salvage Sleeve – Standard for Cummins 4BTA
  
  
• Piston Ring Set for Cummins 4BTA

Cummins 6B

Applications: Light-duty marine engines

Piston Kit Catalog for Cummins 6B

• Piston Kit for Cummins 6B
  
  
• Salvage Sleeve – Standard for Cummins 6B
  
  
• Piston Ring Set for Cummins 6B

Cummins 6BT

Applications: Marine gensets, standby power

Piston Kit Catalog for Cummins 6BT

• Piston Kit for Cummins 6BT
  
  
• Salvage Sleeve – Standard for Cummins 6BT
  
  
• Piston Ring Set for Cummins 6BT

Cummins 6BTA

Applications: Marine propulsion, small cargo vessels

Piston Kit Catalog for Cummins 6BTA

• Piston Kit for Cummins 6BTA
  
  
• Salvage Sleeve – Standard for Cummins 6BTA
  
  
• Piston Ring Set for Cummins 6BTA

Cummins QSB 3.3

Applications: Auxiliary marine engines, power packs

Piston Kit Catalog for Cummins QSB 3.3

Cummins QSB 4.5

Applications: Mid-range marine systems, hydraulics

Piston Kit Catalog for Cummins QSB 4.5

Cummins QSB 5.9

Applications: Marine service vessels, small tugboats

Piston Kit Catalog for Cummins QSB 5.9

• Piston Kit for Cummins QSB 5.9

Cummins QSB 6.7

Applications: Yachts, patrol boats, ferry engines

Piston Kit Catalog for Cummins QSB 6.7

• Piston Kit for Cummins QSB 6.7
  
  
• Piston Ring Set for Cummins QSB 6.7
  
  
• Cylinder Liner - Standard for Cummins QSB 6.7

Cummins QSB 7

Applications: Mid-power marine propulsion

Piston Kit Catalog for Cummins QSB 7

• Piston Kit for Cummins QSB 7.0
  
  
• Piston Ring Set for Cummins QSB 7.0
  
  
• Cylinder Liner - Standard for Cummins QSB 7.0

Cummins ISB 5.9

Applications: Generator sets, commercial vessels

Piston Kit Catalog for Cummins ISB 5.9

• Piston Kit for Cummins ISB 5.9 
  
  
• Piston Ring Set for Cummins ISB 5.9

Cummins ISB 6.7

Applications: Emissions-compliant marine platforms

Piston Kit Catalog for Cummins ISB 6.7

• Piston Kit for Cummins ISB 6.7
  
  
• Piston Ring Set for Cummins ISB 6.7
  
  
• Cylinder Liner - Standard for Cummins ISB 6.7

Cummins 6C

Applications: Marine power and backup systems

Piston Kit Catalog for Cummins 6C

• Piston Kit for Cummins 6C
• Piston Ring Set for Cummins 6C
• Cylinder Liner - Standard for Cummins 6C
• Liner Seal, Rectangular for Cummins 6C

Cummins 6CT

Applications: Commercial boats, dredging equipment

Piston Kit Catalog for Cummins 6CT

• Piston Kit for Cummins 6CT
• Piston Ring Set for Cummins 6CT
• Cylinder Liner - Standard for Cummins 6CT
• Liner Seal, Rectangular for Cummins 6CT

Cummins 6CTA

Applications: Marine and stationary gensets

Piston Kit Catalog for Cummins 6CTA

• Piston Kit for Cummins 6CTA
• Piston Ring Set for Cummins 6CTA
• Cylinder Liner - Standard for Cummins 6CTA
• Liner Seal, Rectangular for Cummins 6CTA

Cummins ISC

Applications: Tugboats, mid-range commercial vessels

Piston Kit Catalog for Cummins ISC

• Piston Kit for Cummins ISC
• Piston Ring Set for Cummins ISC
• Cylinder Liner - Standard for Cummins ISC
• Liner Seal, Rectangular for Cummins ISC

Cummins QSC

Applications: Fast ferries, water taxis, heavy-duty marine equipment

Piston Kit Catalog for Cummins QSC

• Piston Kit for Cummins QSC
• Piston Ring Set for Cummins QSC
• Cylinder Liner - Standard for Cummins QSC
• Liner Seal, Rectangular for Cummins QSC

Cummins NT855

Applications: Marine generator sets, auxiliary systems

Piston Kit Catalog for Cummins NT855

• Piston Kit for Cummins NT855

• Piston Ring Set for Cummins NT855

• Cylinder Liner – Standard for Cummins NT855

• Liner Seal Ring for Cummins NT855

• Liner O-Ring Seal for Cummins NT855

Cummins NH855

Applications: Workboats, offshore platforms

Piston Kit Catalog for Cummins NH855

• Piston Kit for Cummins NH855

• Piston Ring Set for Cummins NH855

• Cylinder Liner – Standard for Cummins NH855

• Liner Seal Ring for Cummins NH855

• Liner O-Ring Seal for Cummins NH855

Cummins KTA19

Applications: Tugboats, oil rig support, dredgers

Piston Kit Catalog for Cummins KTA19

• Piston Kit for Cummins KTA19

• Piston Ring Set for Cummins KTA19

• Cylinder Liner – Standard for Cummins KTA19

• Cylinder Liner Kit – Standard for Cummins KTA19

• Cylinder Liner Seal Kit for Cummins KTA19

• Shim for Cylinder Liner for Cummins KTA19

Cummins KTA38

Applications: Propulsion engines in large vessels

Piston Kit Catalog for Cummins KTA38

• Piston Kit for Cummins KTA38
• Cylinder Liner – Standard for Cummins KTA38
• Cylinder Liner Seal Kit for Cummins KTA38
• Piston Ring Set for Cummins KTA38

Cummins KTA50

Applications: Commercial marine and high-output generators

Piston Kit Catalog for Cummins KTA50

• Piston Kit for Cummins KTA50
• Cylinder Liner – Standard for Cummins KTA50
• Cylinder Liner Seal Kit for Cummins KTA50
• Piston Ring Set for Cummins KTA50

Cummins QSK19

Applications: Marine propulsion, heavy-load operations

Piston Kit Catalog for Cummins QSK19

• Piston Kit for Cummins QSK19
  
  
• Cylinder Liner – Standard for Cummins QSK19
  
  
• Piston Ring Set for Cummins QSK19
  
  
• Cylinder Liner Seal Kit for Cummins QSK19
  
  
• Cylinder Liner Kit – Standard for Cummins QSK19
  
  
• Shim for Cylinder Liner for Cummins QSK19

Cummins L10

Applications: Industrial platforms and marine generator sets

Piston Kit Catalog for Cummins L10

• Piston Kit for Cummins L10

• Cylinder Liner – Standard for Cummins L10

• Cylinder Liner Kit – Standard for Cummins L10

• Piston Ring Set for Cummins L10

• Liner Seal Ring for Cummins L10

Cummins ISL 8.9

Applications: Auxiliary vessels, commercial fishing

Piston Kit Catalog for Cummins ISL 8.9

• Piston Kit for Cummins ISL

• Cylinder Liner – Standard for Cummins ISL

• Piston Ring Set for Cummins ISL

• Liner Seal, Rectangular for Cummins ISL

Cummins QSL 8.9

Applications: Heavy marine support systems

Piston Kit Catalog for Cummins QSL 8.9

• Piston Kit for Cummins QSL

• Cylinder Liner – Standard for Cummins QSL

• Piston Ring Set for Cummins QSL

• Liner Seal, Rectangular for Cummins QSL

Cummins M11

Applications: Commercial marine, industrial cranes

Piston Kit Catalog for Cummins M11

• Piston Kit for Cummins M11

• Cylinder Liner – Standard for Cummins M11

• Cylinder Liner Kit – Standard for Cummins M11

• Piston Ring Set for Cummins M11

• Liner Seal Ring for Cummins M11

Cummins ISM11

Applications: Mid-power propulsion units

Piston Kit Catalog for Cummins ISM11

• Piston Kit for Cummins ISM11

• Cylinder Liner – Standard for Cummins ISM11

• Piston Ring Set for Cummins ISM11

• Liner Seal Ring for Cummins ISM11

Cummins QSM11

Applications: Heavy-duty marine propulsion

Piston Kit Catalog for Cummins QSM11

• Piston Kit for Cummins QSM11

• Cylinder Liner – Standard for Cummins QSM11

• Piston Ring Set for Cummins QSM11

• Liner Seal Ring for Cummins QSM11

Installation and Overhaul Tips

Always confirm:

• Cylinder bore specs (standard or oversize)

• Ring gap and side clearance

• Wrist pin interference fit

Use proper tools including ring compressors, feeler gauges, and torque wrenches. Replace related components such as rod bearings and liners when signs of wear are present.

Contact Diesel Pro Power

Have a question about fitment or installation?
Call us at:

• 888-433-4735 (U.S.)

• 305-545-5588 (International)

Or use our after-hours contact form for 24/7 assistance.