OEM Mercedes-Benz M119.980 5.0L Rebuilt Engine

OEM Mercedes-Benz M119.980 5.0L Rebuilt Engine & Transmission Package

Revive your classic Mercedes-Benz with this meticulously rebuilt OEM M119.980 5.0L V8 engine and matching transmission—a turnkey solution for enthusiasts seeking factory-original performance and reliability. Designed for iconic models like the 500E (W124) and SL500 (R129), this powerhouse combo has been restored to Mercedes-Benz specifications using genuine OEM parts, ensuring authenticity and enduring quality.

Key Features

• OEM Rebuild Excellence: Fully disassembled, inspected, and rebuilt with genuine Mercedes-Benz components, including pistons, bearings, gaskets, and timing chain guides.
• Performance Restored: Delivers the M119’s signature 326 HP and 480 Nm torque (factory specs), with silky-smooth power delivery and a sonorous V8 exhaust note.
• Matched Transmission: Rebuilt 722.5 5-speed automatic transmission (or specified variant), recalibrated for seamless shifts and durability.
• Comprehensive Refurbishment:
  • Engine: New valve seals, honed cylinders, balanced rotating assembly, and upgraded head gaskets.
  • Transmission: Replaced clutch packs, seals, solenoids, and fluid pump.
  • Testing: Dyno-tested for performance and leak-down/compression verified.
• Plug-and-Play Readiness: Prepped for installation with fresh gaskets, seals, and OEM-grade fluids.

Technical Specifications

• Engine:
  • Model: M119.980
  • Displacement: 5.0L (4,973 cc)
  • Configuration: 90° V8, DOHC, 32-valve
  • Fuel System: Bosch LH-Jetronic injection
  • Power: 326 HP @ 5,700 RPM / 480 Nm torque @ 3,900 RPM
• Transmission:
  • Model: 722.5 5-speed automatic (or as specified)
  • Features: Electronic shift control, reinforced internals, and OEM fluid pan.

Rebuild Process

1. Teardown & Inspection: Crack-tested block, magnafluxed crankshaft, and measured tolerances.
2. Machining: Cylinder honing, deck resurfacing, and valve seat grinding.
3. Assembly: New OEM bearings, timing components, and upgraded chain guides.
4. Testing: Dyno-run to break-in bearings, verify oil pressure, and ensure optimal AFR.
5. Quality Assurance: 12-month limited warranty on engine/transmission (terms apply).

Applications

• Models:
  • Mercedes-Benz 500E (W124)
  • SL500 (R129)
  • S500 (W140)
  • AMG-tuned variants (where applicable)