Original AMG M117 Engine – Classic Mercedes-Benz V8 Power
This M117 6.0L engine, originally built in Germany for the Mercedes-Benz W126 (1986–1991 model years), has been perfectly rebuilt and is now a true masterpiece of engineering. With only 4,000 miles since its rebuild, it runs as if it just rolled out of the factory in Affalterbach, where pre-merger AMG was located.
The Original AMG M117 engine is one of the most iconic and sought-after Mercedes-Benz powerplants, built during the golden era of AMG performance engineering. Known for its robust V8 configuration, hand-built precision, and unmatched durability, the AMG-tuned M117 represents a rare piece of automotive history. Designed for legendary Mercedes models like the W126 S-Class, SEC Coupes, R107 SL Roadster, and W124 E-Class AMG conversions, this engine is a collector’s dream and a performance enthusiast’s perfect upgrade.
Key Features
- Legendary Heritage: Designed and hand-built by AMG’s master engineers before the brand became Mercedes-AMG, the M117 engine is a symbol of racing pedigree and bespoke performance.
- V8 Powerhouse: A 5.0L or 5.6L naturally aspirated V8 configuration (depending on variant), delivering raw, linear power and a spine-tingling exhaust note that defined AMG’s early reputation.
- Motorsport DNA: Engineered for dominance in touring car racing, this engine powered the iconic Mercedes-Benz 450 SLC AMG and 500 SEC AMG “Hammer,” setting benchmarks for speed and endurance.
- Handcrafted Precision: Each unit was assembled by hand, featuring AMG’s signature upgrades like high-performance camshafts, forged internals, and optimized airflow for unmatched responsiveness.
- Exclusivity: Rare and highly sought-after, original M117 engines are increasingly scarce, making this a prized centerpiece for classic car restoration or display.
Technical Specifications
- Displacement: 5.0L (M117.968) or 5.6L (M117.975) modified to 6.0L 24 valves
- Configuration: 90° V8, SOHC
- Power Output: Up to 375 HP (post-tuning for racing variants)
- Torque: ~400–450 Nm (dependent on configuration)
- Fuel System: Mechanical fuel injection or later KE-Jetronic.
- Engine: The 6.0-liter V8 engine is based on the M117 architecture, but AMG added their own 4-valve cylinder heads and camshafts to increase output dramatically. The entire block was professionally cleaned, resurfaced, and rebuilt to precise AMG specifications, with every critical component inspected and measured.
- Performance: These AMG-modified engines produce around 380 horsepower and significant torque, offering a level of performance far beyond the standard W126 models.
- OEM parts: Many original equipment manufacturer (OEM) and AMG-specific parts were used to ensure the engine’s authenticity and performance. Notable items replaced include:
- New timing chain, tensioners, and guides
- All new gaskets and seals, including the crucial valve cover and head gaskets
- New piston rings and bearings throughout the engine
- Refurbished or new camshafts, solid lifters, and springs, specific to the 4-valve AMG heads
- Engine bay modifications: This powerful 6.0L engine required modifications to the engine bay, specifically “hammering” of the front bulkheads, for the DOHC heads and performance headers to fit.
Applications:
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- Mercedes-Benz 450 SLC AMG (Group 2 Touring Car)
- Mercedes-Benz 500 SEC AMG “Hammer”
- Custom builds for enthusiasts and collectors
- Mercedes Benz W126
- R107/C107