Parts for Cummins 4BTA Engines

Your Trusted Source for Cummins 4BTA Marine and Industrial Engine Parts

When performance, uptime, and durability matter most, Cummins 4BTA engines are the reliable choice for a wide range of marine and industrial applications. These 3.9L four-cylinder turbocharged engines are known for their simplicity, power density, and serviceability. Whether you're maintaining a diesel generator set in a remote facility or overhauling a marine propulsion system, Diesel Pro Power has you covered with high-quality Cummins 4BTA parts shipped fast and backed by world-class service.

At Diesel Pro Power, we specialize in marine-grade and industrial-spec components—not automotive swaps. Our inventory is engineered to support commercial marine vessels, auxiliary systems, industrial gensets, and more.

With a commitment to speed, accuracy, and customer satisfaction, we ship most orders within 24 hours—globally. If you're looking for Cummins 4BTA parts online, you've found the most dependable source.

Buy Cummins 4BTA Parts Online – Fast, Easy, Reliable

Everything You Need for Your Cummins 4BTA Engine

Our vast inventory ensures that you can find all the essential parts you need to keep your engine running at peak performance. All components are vetted for OEM compatibility, durability, and suitability for marine or industrial duty cycles.

Sea Water Pumps for Cummins 4BTA

We offer robust raw water (seawater) pumps built for continuous use in marine environments. Designed to handle the corrosive nature of saltwater and constant engine run times, these pumps include:

• Marine-grade bronze housings

• Marine grade impellers

• High-temp seals and gaskets

• Mounting flanges and pulleys

Also available:

• Zinc anodes

• Water strainers

• Pump repair kits

Engine Rebuild Kits for Cummins 4BTA

We provide comprehensive engine overhaul kits tailored for marine and industrial duty. These kits simplify your rebuild and reduce downtime.

Included components:

• Pistons and rings

• Upper and lower gasket sets

• Crankshaft main and rod bearings

Each rebuild kit is packaged to match specific marine or industrial configurations and can be adjusted based on your engine’s CPL (Control Parts List).

Cylinder Heads for Cummins 4BTA

Our replacement cylinder heads are precision-machined and ready to install, featuring:

• New valves, springs, and keepers

• Pressure-tested for leak-free performance

Accessories available:

• Cylinder head bolts

• Push rods

• Rocker assemblies

Oil System Components For Cummins 4BTA

Maintaining proper oil pressure and cooling is critical in marine and industrial settings. We supply:

• Oil filters

• Oil coolers

• Oil pumps and pickup tubes

• Oil pressure switches and senders

• Gaskets and oil pan hardware

All components are rated for extended-duty operation in high-load, high-temperature environments.

Fresh Water Pumps for Cummins 4BTA

For marine engines using closed-loop cooling systems, fresh water pumps are essential for circulating coolant through heat exchangers or keel coolers. Diesel Pro Power offers durable, high-quality fresh water pumps built to withstand prolonged use in corrosive and high-heat environments.

Our fresh water pump options include:

• Impellers designed for high efficiency and minimal wear

• High-temperature bearings and seals

• Direct-fit mounting to simplify replacement

These pumps are compatible with both keel-cooled and heat exchanger-cooled systems, making them ideal for:

• Marine propulsion engines

• Onboard generator sets

• Hydraulic engine-driven systems

We also carry fresh water pump gaskets, pulley assemblies, and thermostat housings for a complete installation or repair.

Fuel Injectors for Cummins 4BTA

Efficient combustion starts with precision fuel delivery, and that’s where our selection of Cummins 4BTA fuel injectorscomes in. Whether you're maintaining auxiliary marine power systems or 24/7 industrial generators, replacing worn injectors is key to keeping your engine running efficiently and cleanly.

Our inventory includes:

• Direct replacement mechanical fuel injectors for marine and industrial engines

• Injector nozzles and sealing washers

• Injector return lines and fittings

• Full injector sets or individual units for service flexibility

All injectors are factory tested for flow rate and spray pattern to ensure proper atomization, fuel economy, and power delivery.

Proper injector function is especially important for:

• Reducing fuel consumption

• Lowering emissions

• Maintaining consistent engine power under continuous load

Need help identifying your injector type? Our team can assist with matching the correct injector based on your engine serial number or CPL.

Additional Cummins 4BTA Parts We Offer

Beyond core components, we maintain a full catalog of peripheral parts for holistic support:

• Fresh water pumps (for closed-loop cooling systems)

• Thermostats and temperature switches

• Starters and alternators (12V and 24V marine-rated options)

• Marine-grade electrical harnesses

• Fuel lift pumps, filters, and injection pump accessories

• Exhaust elbows, manifolds, and gaskets

• Silicone hose kits

• Belts and tensioners

• Mounting brackets and vibration isolators

• Control cables and marine-grade connectors

Each item is built to withstand salt exposure, moisture, and vibration—ideal for commercial marine and industrial diesel environments.

Why Buy Your 4BTA Cummins Parts From Diesel Pro Power?

Trusted by Thousands of Professionals

With over 15,000 satisfied customers worldwide, Diesel Pro Power has become a go-to source for mission-critical Cummins engine parts. Our success is built on a few simple principles:

24-Hour Global Shipping

We ship fast—really fast. Most orders leave our warehouse within 24 hours. Thanks to our high inventory turnover and efficient logistics, we support:

• International marine fleets

• Offshore installations

• Remote industrial projects

• Shipyards and dock operations

Ultra-Secure Website and Payment Portal

Our website is updated regularly with the latest encryption protocols and security patches. You can safely complete your transaction using major credit cards or wire transfers, with full confidence that your data is protected.

Easy-to-Navigate Online Catalog

We understand that not everyone is a diesel technician, so we’ve designed our online platform to be:

• Intuitive: Easily search by engine model, CPL, or part type.

• Accurate: All listings are cross-referenced with OEM part numbers.

• Fast: Optimized for mobile and desktop browsing.

Unparalleled Customer Service

Our marine and industrial parts specialists are here to help. Whether you need help:

• Identifying your engine’s CPL

• Selecting the correct gasket thickness

• Interpreting technical diagrams

• Troubleshooting performance issues

…we’re just a phone call or email away. You’ll talk to real diesel professionals—not call center agents.

Common Marine and Industrial Applications for Cummins 4BTA Engines

The 4BTA is a workhorse across a range of non-automotive, professional-grade installations.

Marine Applications

• Commercial fishing vessels: Engines that operate under full load for hours at sea.

• Tugboats and workboats: Constant auxiliary engine use for hydraulic winches and electrical systems.

• Harbor patrol and pilot boats: Reliable, quick-starting marine engines for utility craft.

• Auxiliary generator sets on larger ships: For onboard lighting, refrigeration, and mechanical systems.

• Bilge and firefighting pumps: Stationary and emergency-response systems.

Industrial Applications

• Power generation: Backup and prime power diesel generator sets for remote facilities.

• Pumps and compressors: Used in mining, construction, and agriculture for water or pneumatic systems.

• Hydraulic power units: For cranes, presses, or offshore drilling rigs.

• Material handling systems: Forklifts and lift engines (stationary platforms only).

• Custom industrial machinery: Concrete plants, logging equipment, and sawmill automation.

The Cummins 4BTA’s balance of torque, efficiency, and simplicity makes it an ideal candidate where uptime is mission-critical.

Routine Maintenance Tips for Marine & Industrial Cummins 4BTA Engines

Proper maintenance extends engine life and reduces unexpected downtime. Follow these best practices based on application environment:

Marine Maintenance Checklist

• Inspect and replace raw water impellers every 100 hours or at the start of every season.

• Monitor and replace zinc anodes to prevent corrosion in saltwater systems.

• Flush and clean heat exchangers regularly to remove salt and calcium buildup.

• Grease and inspect control cables used in engine room throttle or shift linkages.

• Check all hoses for cracking, stiffness, and salt deposits—especially near metal fittings.

Industrial Maintenance Best Practices

• Replace fuel and oil filters on a strict hourly schedule (every 250–300 hours).

• Use pre-cleaners or air filter wrap-arounds in dusty environments.

• Keep a logbook of runtime hours for precise service intervals.

• Maintain belt tension and alignment, especially on engines with high accessory loads.

• Drain fuel/water separators regularly to prevent injector damage.

Recommended Replacement Cycles

Contact Diesel Pro Power – Your Marine and Industrial Engine Experts

Ordering is simple—but we’re here if you need help. Whether you have a question about installation, part compatibility, or shipping options, our team is ready to assist.

Call Us

• U.S. & Canada: 1-888-433-4735

• International: +1-305-545-5588

• Hours: Monday–Friday, 8 AM–5 PM EST

Or Email Us

Send us your engine serial number or a photo of your existing part, and we’ll confirm exactly what you need.

Why Diesel Pro Power is the Leader in Cummins 4BTA Support

To recap, here's why marine and industrial professionals around the world choose us:

• Dedicated marine and industrial focus — no automotive content or generic listings

• Lightning-fast shipping — orders ship within 24 hours globally

• Marine-grade durability — salt-tolerant and vibration-tested parts

• Huge in-stock inventory — ready-to-ship replacements for nearly every 4BTA configuration

• Support from real experts — diesel technicians who know your engine inside and out