Original AMG M117 4V Engine – Mercedes-Benz C126 SEC AMG “Widebody”
1980s Pre-Merger AMG Masterpiece | Ultra-Rare Collector Engine | Motorsport Heritage

Offered is an authentic AMG M117 4-Valve V8 engine, hand-built during AMG’s pre-Mercedes era and removed from a genuine Mercedes-Benz C126 SEC AMG “Widebody” coupe. This engine represents the pinnacle of 1980s AMG engineering—a period-correct, high-performance conversion that transformed the W126 SEC into an Autobahn icon. Extremely limited production makes this a true holy grail for collectors, restorers, and museums.

 Technical Specifications

• Base Engine: Mercedes-Benz M117 V8 (5.0L era-correct)

• AMG Configuration: 4-Valve (4V) cylinder head conversion

• Fuel Type: Petrol / Gasoline

• Era: 1980s (Pre-merger AMG)

AMG Modifications (Period-Correct)

• Forged pistons

• Balanced crankshaft

• Aggressive AMG camshafts

• High-flow intake manifold

• Upgraded throttle body

• Mechanical fuel injection (AMG-spec)

Compatibility & Fitment

• Original Application: Mercedes-Benz C126 SEC AMG Widebody (W126)

• Retrofittable To: Other M117-powered classics (verify fitment):

  • W116 S-Class

  • R107 SL

• Transmission Pairing:

  • Period-correct 4-speed automatic

  • Rare 5-speed manual (availability varies)

VIN and engine number verification recommended for concours or period-correct restorations.

 Highlights

• Authentic pre-merger AMG engine (hand-built)

• Rare AMG 4-valve conversion—significant performance and airflow gains

• Museum-grade provenance potential

• Ideal centerpiece for AMG Widebody restorations

• High investment and collector value

 Condition & Documentation

• Original AMG configuration

• Engine stamps, photos, and documentation available on request

• Professional inspection welcome