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1999 Cummins Ram 2500-3500 Diesel Engine 5.9L

1999 Cummins 5.9L Diesel Engine

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Used & Remanufactured Cummins 5.9L Engines

The 2012 Ford Powerstroke 6.7L Diesel Engine is a robust choice for heavy-duty applications, found in the 2012 Ford F250, F350, and F550 models. This turbocharged V8 engine delivers significant torque and horsepower, making it ideal for towing and hauling. Its design ensures both performance and efficiency, with a reputation for reliability and durability. Whether for work or recreation, the 6.7L Powerstroke handles demanding tasks with ease. For more details on its performance and specs, visit our 2012 F250 diesel engine page.

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Used & Remanufactured Cummins 5.9L Engines

The 1999 Cummins 5.9L engine was a workhorse option in Ram 2500 and 3500 trucks, known for its durability, towing power, and reliability. This 5.9L 24-valve diesel engine featured a cast-iron block and head, with the VP44 injection pump system that helped deliver improved power over earlier models. Commonly sought by diesel enthusiasts, this powerplant remains a favorite for work trucks and performance builds alike. Whether you're replacing a failed unit or upgrading your project truck, used and remanufactured Cummins engines are still widely available for this model year.

If you're running a 1999 Ram 2500 diesel engine, chances are you rely on it for serious work. The 5.9L Cummins offers a towing capacity exceeding 10,000 lbs when properly equipped. Its torque-heavy design makes it ideal for hauling, and with basic 1999 Ram diesel performance mods, power output can increase considerably.

The 24-valve design improved airflow and combustion efficiency compared to earlier 12-valve models. Fuel mileage, though varying by condition and driving habits, averages between 14–17 MPG. Many owners improve this further with turbo upgrades or injector tuning.

Proper 24-valve Cummins maintenance is essential to avoid issues, especially related to the VP44 injection pump. Common problems in the 1999 Cummins VP44 include premature failure due to lift pump issues or poor electrical connections. Keeping the fuel 9system in good shape and checking the 1999 Cummins timing set can extend engine life and help prevent costly breakdowns.

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Engine Specs & Common Issues

The Cummins 24-valve specs for the 1999 model year include 235 horsepower and 460 lb-ft of torque. The engine uses a cast-iron block and features a high-pressure direct injection system. These engines are known for their mechanical longevity, but they are sensitive to fuel delivery issues.

If you're dealing with 1999 Cummins reliability concerns, consider replacing your existing unit with a professionally remanufactured engine. You can browse other Dodge diesel engines to compare compatible options or performance upgrades.

For buyers searching for a used 5.9L Cummins for sale, it’s important to verify the engine’s core condition and component integrity before making a purchase. Requesting compression test results and oil pressure readings helps identify any underlying issues like worn-out blocks or damaged parts. Whether you plan to rebuild the engine or replace it, comparing rebuild costs from different shops can save you money and ensure quality work.

Houston Engines also offers remanufactured 6.7L Cummins engines for those looking to upgrade to a newer platform. Choosing the right engine for your vehicle’s application enhances long-term reliability and value. Taking the time to select a well-matched engine will help you avoid future problems and keep your truck running smoothly for years.

Compatible with 1999 Ram 2500 and 3500 trucks

The 1999 Cummins 5.9L diesel engine was specifically engineered for heavy-duty use in Dodge Ram 2500 and 3500 trucks. It also found use in conversion vehicles and some off-highway applications due to its robust torque curve.

Many choose to retrofit these engines into older trucks for added performance. If you're upgrading or swapping, be sure to check our page for used Ford diesel engines for other diesel options that may suit your needs.

The 1999 Cummins 5.9L engine is supported by a wide range of aftermarket parts and performance upgrades. Its modular design allows for easier rebuilds and repairs, letting mechanics replace or upgrade components without needing a full teardown. This flexibility makes it a practical long-term solution for owners focused on reliability, maintenance, and potential performance improvements.

What to Know Before Buying

Before you purchase a replacement 1999 Cummins 5.9L engine, understand what comes with it. Some used engines are long blocks without accessories like turbochargers, injectors, or wiring harnesses.

Buyers should verify mileage, engine hours, and the presence of factory tags when shopping for a used or reman engine. If you're considering an upgrade, look at the Chevy 6.6L Duramax diesel engines to compare overall longevity and parts availability.

Houston Engines offers both used and remanufactured diesel engines, including other options like the Ford 7.3L Powerstroke, which is also known for reliability and torque output. Understanding your goals—daily driving, heavy hauling, or performance—will help you choose the best engine for your vehicle.

Frequently Asked Questions (FAQs)

Frequently Asked Questions (FAQ)

What horsepower does the 1999 Cummins 5.9L produce?

The stock 1999 24-valve Cummins engine produces 235 horsepower and 460 lb-ft of torque.

What trucks use the 1999 Cummins 5.9L diesel engine?

This engine was used in 1999 Dodge Ram 2500 and Ram 3500 heavy-duty pickup trucks.

What are common 1999 Cummins VP44 issues?

Common problems include pump failure due to lift pump weakness or electrical faults.

Is the 1999 Cummins 5.9L engine reliable?

Yes, it's known for mechanical durability, but fuel system upkeep is critical for longevity.

What is the towing capacity with this engine?

When properly equipped, a 1999 Ram with this engine can tow up to 14,000 lbs.

How many miles can the 5.9L Cummins last?

With good maintenance, these engines often surpass 300,000 miles.

Can I improve 1999 Cummins fuel mileage?

Yes, with modifications like intake upgrades, turbo tuning, or injector adjustments.

What’s included in a remanufactured 1999 Cummins engine?

It typically includes new pistons, rings, bearings, and reconditioned or new heads and crank.

Is this engine good for performance builds?

Absolutely. The 24-valve platform is very popular for performance and towing builds.

How much does a 5.9L Cummins rebuild cost?

Depending on labor and parts, a rebuild can cost between $3,000 and $6,500.

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