The 2004 RAM 2500 came with the 5.7L HEMI V8 engine, which was the first year this legendary powerplant was offered in the heavy-duty Ram lineup. This naturally aspirated engine produces 345 horsepower and 375 lb-ft of torque, featuring multi-displacement system (MDS) technology that can deactivate four cylinders during light load conditions to improve fuel economy. The 5.7L HEMI uses a cast iron block with aluminum heads and features coil-on-plug ignition. It’s paired with either a 6-speed manual transmission or 5-speed automatic, depending on configuration. This engine is known for its strong low-end torque and towing capability, making it well-suited for heavy-duty truck applications.

The 2004 RAM 2500 shares many parts with the 2003-2005 model years, as these represent the third generation Ram heavy-duty trucks. Engine components from the 5.7L HEMI are largely compatible across 2003-2008 Ram trucks that used this engine. Body panels and interior components typically interchange within the 2003-2005 range, though some trim-specific pieces may vary. Suspension components, brake parts, and drivetrain pieces often have broader compatibility extending into 2006-2009 models. However, it’s important to verify specific part numbers and configurations, as mid-year changes and option packages can affect compatibility. Always confirm fitment details before purchasing, especially for electrical components and computer modules.

Parts availability changes daily. Call us at (603) 392-7313 or visit our online shop to check current inventory from this specific vehicle. If we have sold a part you need, our Parts Broker service can source it from our network of partner yards nationwide.

Yes! We ship parts from this vehicle and our entire inventory nationwide. Most orders ship within 1-2 business days via FedEx or freight carriers for larger components like engines and transmissions. Call (603) 392-7313 for a shipping quote on any part.

The 5.7L HEMI V8 in the 2004 RAM 2500 is generally considered a reliable and robust engine when properly maintained. Being the first year of HEMI production in the heavy-duty lineup, some early production issues existed, but most were resolved through updates. The engine responds well to regular oil changes using quality oil, as the MDS system requires proper lubrication. Common maintenance items include spark plugs every 30,000 miles and regular cooling system service. The cast iron block construction makes it durable for high-mileage applications. Most owners report good longevity with proper care, often exceeding 200,000 miles. Key maintenance tips include using quality fuel to prevent carbon buildup, maintaining the cooling system, and addressing exhaust manifold bolt issues early to prevent more expensive repairs.