Parts Catalog for Cummins Engines

Why Diesel Pro Power Is the Top Choice for Cummins Engine Parts

If you're searching for reliable, fast-shipping, high-performance parts for Cummins diesel engines, Diesel Pro Power delivers. Whether you're working on a marine diesel engine, a backup generator, or an industrial piece of equipment, we provide a one-stop online experience with thousands of aftermarket parts built to meet or exceed OEM quality standards.

With global 24-hour shipping, a 1-year warranty on every part, and an expert support team fluent in English and Spanish, Diesel Pro Power serves customers in over 180 countries. Commercial fleets, boat owners, contractors, and diesel mechanics trust us to deliver fast and right the first time.

Diesel Pro Advantages: Your Competitive Edge

✅ Fast Global Shipping

We ship all orders within 24 hours from our warehouse in the U.S., no matter where you are—whether it's Miami, San Diego, the Caribbean, Latin America, Europe, Southeast Asia, or Africa.

✅ Large Inventory, Always In Stock

We maintain one of the world’s largest inventories of aftermarket Cummins diesel engine parts. No more waiting weeks for parts to arrive.

✅ Industry-Leading Warranty

All parts sold by Diesel Pro are backed by a 1-year manufacturer warranty.

✅ Bilingual Customer Service

Call or message our team in English or Spanish—we know the parts inside and out and help match them to your CPL number or application.

✅ Safe, Easy Checkout

Order with confidence using a secure online platform. Pay via credit card or wire transfer, with complete encryption and fraud protection.

Shop Cummins Parts by Engine Model

Our parts catalog is categorized by Cummins engine model so you can find exactly what you need without confusion. We cover both marine and industrial models, including legacy and Tier 3 engines.

Marine Cummins Engines We Support

• Cummins 6B / 6BT / 6BTA

• Cummins 6C / 6CT / 6CTA 8.3

• Cummins QSB 5.9 / QSB 6.7

• Cummins QSC 8.3

• Cummins QSM11

• Cummins KTA19 / KTA38 / KTA50

• Cummins NTA855 / N14

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Industrial and Generator Engines

• Cummins ISB / ISC / ISL Series

• Cummins QSK Series

• Cummins 4BT / 6BT for construction and mining

• Cummins X Series engines for power gen and agriculture

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Each category includes:

• Overhaul kits (rebuild kits)

• Fuel system components

• Cylinder heads and valve train parts

• Cooling system (raw and fresh water pumps)

• Gaskets and seals

• Turbochargers and aftercoolers

 Rebuild Kits For Cummins Engines – Designed to Fit, Built to Last

Rebuild kits for Cummins engines —also known as overhaul kits—are one of Diesel Pro Power’s specialties. Each kit includes all major wear components and is designed to match specific CPL numbers, ensuring a perfect fit.

Components Included In Overhaul Kits For Cummins Engines

• Pistons and rings

• Cylinder liners

• Connecting rod bearings

• Main bearings

• Thrust washers

• Gasket set (upper and lower)

• Wrist pins and retainers

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We carry kits for:

• Cummins 6B, 6BT, and 6BTA

• Cummins 6CT and 6CTA 8.3 (multiple CPLs)

• Cummins QSB 5.9 and QSB 6.7

• Cummins KTA19, KTA38, and KTA50

• Cummins NTA855 and N14

Every kit includes Diesel Pro's OEM-matching warranty and fast shipping so your vessel, truck, or machine is back in service quickly.

Rebuild Kit CPL Compatibility

Our kits are CPL-specific. Don’t know your CPL? No problem—contact us or check the block tag on your engine. We’re happy to guide you.

See Our Guide On Reading Your Cummins Data Plate

Cooling System Parts for Cummins Marine Engines

Overheating is a leading cause of engine damage in marine applications. Diesel Pro carries both raw water pumps and fresh water pumps designed specifically for Cummins engines used in saltwater and freshwater environments.

Raw Water Pumps

Raw water pumps in Cummins engines draw seawater into the engine to cool the closed-loop coolant. Our pumps are built from corrosion-resistant materials and ready for harsh conditions.

Models Supported:

• Cummins 6B / 6BT / 6BTA

• Cummins 6CT / 6CTA 8.3

• Cummins QSB 5.9 / QSB 6.7

• Cummins QSM11

• Cummins KTA19 / KTA38

We also stock raw water pump impellers, repair kits, bearings, housings, and shaft seals for full service.

Fresh Water Pumps

Also known as circulating water pumps, freshwater pumps in Cummins engines move coolant within the engine and heat exchanger loop.

Applications Include:

• Cummins 6B, 6BT, 6BTA

• Cummins 6CT, 6CTA 8.3

• Cummins QSC, QSM11

• Cummins KTA19, KTA38, NTA855

All pumps are new, tested, and covered under Diesel Pro’s 1-year warranty.

Fuel System Parts for Cummins

We carry a full selection of fuel injection parts for Cummins engines, lift pumps, injector sleeves, and hardware. Our parts are precision manufactured for marine and industrial-grade reliability.

Available Components

• Fuel injectors

• Fuel pumps

• Lift pumps

• Injector seals and sleeves

• Fuel filters and housings

No matter the engine model, we can help identify the exact fuel delivery system for your setup.

Turbochargers, Aftercoolers, and Exhaust Parts

Diesel Pro offers turbochargers for Cummins Engines that can be identified for your exact engine via your serial numbr for optimal performance. We also provide all related hardware, gaskets, and aftercooler parts (where applicable).

Popular Items

• Turbochargers for Cummins 6CTA 8.3

• Marine aftercoolers for engines ending in “TA”

• Exhaust elbows

• Heat shields

• Exhaust manifold gaskets

For Cummins engines with water-cooled turbos or integrated aftercoolers, we carry direct-fit replacements.

Cylinder Heads and Valve Train

We stock brand-new cylinder heads for Cummins engines  as well as key components like valves, springs, and retainers. Whether you're replacing a single head or rebuilding a full top end, we've got the parts in stock.

Inventory Includes:

• Complete cylinder heads

• Valve cover gaskets

• Push rods and rocker arms

• Valve guides and seals

• Head bolts and studs

Gaskets, Seals, and Hardware

No rebuild is complete without the right gaskets for your Cummins engine. We carry complete gasket sets and individual components.

• Upper and lower gasket sets

• Rear main seals

• Oil pan gaskets

• Valve cover gaskets

• Intake and exhaust manifold gaskets

Easy Ordering, Seamless Checkout

Finding the right Cummins part has never been easier. Use our search bar, filter by model or CPL, or browse by category. Every product page includes clear photos, detailed specs, and fitment notes.

Secure Checkout Options

• Credit card (Visa, MasterCard, Amex)

• Wire transfer for international orders

24-Hour Global Shipping

We know that downtime costs money. That’s why we ship fast. Orders are processed within 24 hours and delivered door-to-door to over 180 countries.

Popular shipping destinations:

• United States

• Panama, Colombia, Chile

• Dominican Republic, Bahamas, Puerto Rico

• Spain, Italy, France

• Nigeria, Ghana, Kenya

• Philippines, Australia

Need express freight? Just ask—we can expedite large orders for critical downtime situations.

Unrivaled Customer Service

Ordering Cummins parts online should never feel like a gamble. With Diesel Pro, you have a direct line to experts with decades of diesel engine experience.

• Call us for CPL verification or installation tips

• Get help sourcing rare parts

• Spanish and English support available

• Friendly, trained diesel experts—not call center reps

Whether you're replacing an injector or doing a full rebuild, we’ll guide you through it.

Cummins Troubleshooting and Maintenance Support

Engine overheating? White smoke? Hard starting? We’ve got you covered. Our website features a Cummins Troubleshooting Guide with real-world solutions based on thousands of support calls.

Also available:

• Oil and coolant capacities

• Recommended maintenance schedules

• Torque specs

• Valve lash settings

Check the Diesel Pro blog for step-by-step guides and video walk-throughs.

Trusted by Over 30,000 Customers Worldwide

From boat captains in the Caribbean to equipment managers in Argentina, Diesel Pro is a global leader in Cummins diesel support.

Real Customer Reviews:

“We’ve rebuilt dozens of 6BTs using Diesel Pro kits. Every one started on the first crank.” — Marco, Panama

“I saved over $1,200 compared to OEM for my QSM11 overhaul. Parts arrived in 4 days to Portugal.” — Ricardo, Portugal

“I called them at 5pm—they shipped my KTA19 kit same day. Nobody else does that.” — Jeff, Florida

Frequently Asked Questions (FAQ)

1. What is a CPL number and why is it important when ordering Cummins parts?

The CPL (Control Parts List) is a unique identifier that ensures parts compatibility across your Cummins engine's pistons, camshaft, injectors, and timing components. Always match parts using your CPL.

2. Where do I find the CPL number on my Cummins engine?

It’s typically located on the engine data plate attached to the block. For marine engines, it’s often on the injection pump side. Contact us if you need help identifying it.

3. Do you ship Cummins parts internationally?

Yes, Diesel Pro ships to over 180 countries with 24-hour order processing and door-to-door service.

4. Are Diesel Pro parts genuine Cummins parts?

No. We offer high-quality aftermarket parts engineered to meet or exceed OEM specifications, backed by a 1-year warranty.

5. What’s included in your rebuild kits for Cummins?

Each kit typically includes pistons, liners, rings, rod and main bearings, thrust washers, and complete gasket sets. We also provide CPL-specific compatibility.

6. How can I tell if I need a one-piece or two-piece piston rebuild kit?

This depends on your engine’s CPL number. One-piece pistons are common in later models. Contact our team with your CPL and we’ll verify. This can also be verified visually. 

7. Do you carry raw water pumps and fresh water pumps for Cummins marine engines?

Yes. We carry both, including models for the 6BT, 6CTA, QSB, QSM11, and KTA series.

8. Do your parts work for commercial vessels like tugboats and fishing boats?

Absolutely. We support a wide range of marine diesel applications including commercial fleets, ferries, yachts, and more.

9. Can I purchase a single injector or do I have to buy a full set?

Yes, individual components like injectors, pistons, and bearings can be purchased separately.

10. What if I can’t find my part on your website?

Contact us. Our inventory is extensive and not all items may be listed online. We can help source what you need.

11. What warranty comes with Cummins parts from Diesel Pro?

All our Cummins parts include a 1-year warranty from the date of purchase.

12. Do you carry parts for Tier 3 or Tier 4 Cummins engines?

Yes, we support newer Tier-rated engines. Let us know your engine model or CPL number and we’ll verify availability.

13. Can I return a part if I ordered the wrong one?

Yes. Contact our support team within 30 days for return authorization. Returns must be unused and in original condition.

14. Do you offer support in Spanish?

Yes. Our bilingual staff provides technical and order support in both English and Spanish.

15. Do your overhaul kits come with torque specs or installation instructions?

We provide torque specs and guides on our blog. For technical help, contact our support team. When overhauling it is always best to work with the OEM service manual. 

16. What are the oil capacity and coolant capacity for my Cummins engine?

Capacities vary by model. Visit our blog or reach out with your engine model and we’ll provide exact specs. You can also refer to the OEM service manual. 

17. Can you match parts using my engine’s serial number instead of the CPL?

Yes, we can verify with both your serial number and your CPL number, however identifying by CPL number will be faster since parts are already categorized by CPL on our website. 

18. Are your parts suitable for saltwater applications?

Yes. Our marine-grade raw water pumps, aftercoolers, and other components are corrosion-resistant and designed for harsh marine environments.

19. Do you offer complete engine rebuild kits or just top end kits?

We offer both. Some kits include full bottom-end components, while others focus on the top end. Check the product description or call us to confirm.

20. What’s the difference between a rebuild kit and an overhaul kit?

They are used interchangeably. Both refer to comprehensive kits designed for a full engine rebuild.

21. Can I place an order by phone?

Yes. Call our customer service team and we’ll assist with placing your order over the phone.

22. How long does shipping take within the United States?

Most orders ship within 24 hours (M-F). Arrival times depend on the shipping service selected. For South Florida same day delivery is available through courier. For the rest of the continental US services include overnight, 2nd day, 3rd day, or Ground (1-7 days depending on how far you are from our Miami warehouse). 

23. Do you offer expedited or overnight shipping?

Yes, expedited options are available through our website. 

24. What is the most common mistake when ordering Cummins parts online?

Ordering without checking the CPL number. Even parts that appear identical can vary based on configuration.

25. Can I track my order once it ships?

Yes. You’ll receive a tracking number once the order is processed so you can monitor delivery in real-time.

Cummins Engine Specifications

Additional Resources 

• Cummins Troubleshooting Guide – Blog

• How to Find Your CPL Number & Serial Number - Blog

• Cummins KTA19 Overhaul Part 1, Cummins KTA19 Overhaul Part 2 (Video)

• Practical Guide To Servicing Your Cummins Engine

• Installing Cylinder Head &  Injectors on a Cummins 6CTA 8.3 Engine (Video)

• Torque Specs for Cummins Engines

• Shop All Cummins Rebuild Kits by CPL