OM617 Engine for Sale: A Comprehensive Guide
om617 engine for sale, The OM617 engine is a legendary engine that holds a special place in automotive history. Known for its reliability, durability, and robustness, the OM617 is a diesel engine manufactured by Mercedes-Benz from the mid-1970s to the early 1990s. If you’re in the market for an OM617 engine for sale, whether for a restoration project or an engine swap, this guide will provide you with essential information about the engine, its specifications, where to find it, and the frequently asked questions about purchasing one.
OM617 Engine Overview
The OM617 is a 5-cylinder, naturally aspirated or turbocharged diesel engine. It was used in various Mercedes-Benz models, primarily in the W123, W126, and W124 series, and is highly regarded for its longevity and ability to run for hundreds of thousands of miles if maintained properly. With a reputation for being an incredibly reliable and long-lasting engine, the OM617 is still a favorite among enthusiasts, particularly in the classic Mercedes-Benz community.
OM617 Engine Specifications
Here are the key specifications for the OM617 engine:
- Engine Type: Inline 5-cylinder diesel engine
- Displacement: 3.0L (2,987cc)
- Bore x Stroke: 87.5 mm x 84.0 mm
- Fuel Type: Diesel
- Fuel Delivery System: Bosch Mechanical Fuel Injection
- Compression Ratio: 22.5:1
- Power Output:
- Naturally Aspirated (NA): Approximately 72-80 hp (varies by model)
- Turbocharged (Turbodiesel): Approximately 120 hp (varies by model)
- Torque:
- Naturally Aspirated: 143 lb-ft (varies by model)
- Turbocharged: 170-180 lb-ft (varies by model)
- Cylinder Head: Aluminum
- Timing System: Chain-driven camshaft
- Cooling: Water-cooled
- Applications: Used in Mercedes-Benz cars, vans, and trucks such as W123 (Mercedes 240D, 300D), W126 (300SD), and W124 (300D 2.5, 300D Turbo).
Where to Find OM617 Engines for Sale
OM617 engines can be found through various outlets. Here are some common places where you can look for an OM617 engine:
- Online Marketplaces:
- eBay: One of the largest platforms to find used and refurbished OM617 engines. Sellers often offer full engine replacements or engine parts.
- Craigslist: Many private sellers and small shops list OM617 engines for sale, often from dismantled cars or parts suppliers.
- Facebook Marketplace: A great place for local sales and possible deals from enthusiasts.
- Classified Websites: Specialized websites like Mercedes-Benz forums and enthusiast sites often have listings for engines and parts for sale.
- Junkyards and Salvage Yards: Many salvage yards and junkyards carry older Mercedes-Benz models, and you may be able to find a used OM617 engine that can be refurbished.
- Mercedes-Benz Parts Suppliers: Some suppliers specialize in classic Mercedes-Benz parts and can sell rebuilt or new old-stock (NOS) OM617 engines.
- Specialized Engine Shops: Some shops focus on rebuilding and selling diesel engines, including the OM617. These engines often come with warranties or refurbishing options.
- Auto Auctions: Online and in-person auto auctions sometimes feature classic cars or engines, and you might find an OM617 available for bidding.
FAQ: OM617 Engine for Sale
1. What is the average cost of an OM617 engine?
The cost of an OM617 engine varies widely depending on whether it’s used, rebuilt, or new. Prices typically range from $500 to $3,500, depending on the engine’s condition, whether it’s turbocharged, and whether it’s been fully refurbished. A turbocharged version or a professionally rebuilt engine can be more expensive.
2. How long does the OM617 engine last?
With proper maintenance, the OM617 engine is known to last well over 500,000 miles. Many owners report their engines running reliably well into the high-mileage range without major issues. Regular oil changes, proper cooling, and fuel system maintenance are crucial for longevity.
3. What are the advantages of buying a rebuilt OM617 engine?
Rebuilt OM617 engines typically come with new components, such as pistons, rings, and gaskets, and are thoroughly inspected for wear and tear. Buying a rebuilt engine offers peace of mind as it will likely have a longer life and fewer issues than a used engine. However, they are usually more expensive.
4. Can I use an OM617 engine in any vehicle?
While the OM617 was primarily designed for Mercedes-Benz vehicles, it is possible to swap the engine into other vehicles, especially with the right modifications. Popular swaps include using the OM617 in Jeep Wranglers, Land Cruisers, and other off-road vehicles due to its legendary durability and off-road potential.
5. Are there any common problems with the OM617 engine?
While the OM617 is known for its reliability, common issues that may arise with age and wear include:
- Fuel system problems: Over time, the Bosch mechanical fuel injection system may need servicing, especially the fuel injectors or fuel pump.
- Timing chain wear: The engine uses a timing chain, which can stretch and cause engine timing issues if not replaced in time.
- Head gasket leaks: The cylinder head can develop leaks over time, particularly if the engine overheats or is poorly maintained.
6. How do I know if an OM617 engine is in good condition?
Before purchasing an OM617 engine, it’s essential to check for the following:
- Compression test: Ensure the engine has good compression across all cylinders, indicating healthy pistons and rings.
- Leak inspection: Look for any oil or coolant leaks, particularly around the head gasket, oil pan, and fuel system.
- Visual condition: Check the engine for any obvious signs of wear, corrosion, or rust.
- Test run: If possible, start the engine and listen for abnormal noises, such as knocking or rough idling.
7. Can I convert a naturally aspirated OM617 to a turbocharged version?
Yes, it’s possible to convert a naturally aspirated OM617 to a turbocharged version, but it requires more than just swapping the turbocharger. The engine will need modifications to the fuel system, intercooler, exhaust, and cooling systems. Additionally, the higher power output from a turbocharged engine may require upgraded transmission and drivetrain components.
8. What are some tips for maintaining the OM617 engine?
To keep your OM617 running smoothly, follow these maintenance tips:
- Regularly change the oil and oil filter (every 5,000-7,000 miles or as per manufacturer recommendations).
- Monitor coolant levels and check the radiator and hoses for leaks or damage.
- Replace the fuel filters at regular intervals to ensure clean fuel delivery.
- Inspect the timing chain and replace it if it shows signs of wear or stretching.
- Clean the air filters and ensure the air intake system is free from obstructions.
Conclusion
The OM617 engine is a highly regarded diesel engine that continues to be popular among car enthusiasts and owners of classic Mercedes-Benz vehicles. Whether you’re purchasing a used engine for a restoration project, looking for a reliable workhorse, or considering an engine swap, the OM617 offers unmatched reliability and longevity. Make sure to thoroughly inspect any used OM617 engine and consider buying from reputable sources to ensure you’re getting the best value and performance from your purchase.

