Mercedes Benz Classics: Owners Operation, Service, and Repair Workshop Manuals

Mercedes M273 Petrol Engine Manuals

The Mercedes-Benz M273 is a 90° V8 petrol engine that came in two displacements of 4.7 Liter (4,663 cc) and 5.5 Liter (5,461 cc) and was produced from 2006-

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Download: M272 M273 Engine Timing Chain Manual

Mercedes M273 Engine Timing Chain Replacement Manual

Mercedes Benz M272 M273 Engine Timing Chain Manual
Download: 10.2mb, 39 pages, .pdf
Models: M273 E47 E55
Timing Chain Replacement, Repair

USD $9.95

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M273 Engine Technical Data

The M273 engine was based on the similar M272 V6 and is an evolution of its predecessor the M113 V8, with all M273 motors having an aluminum engine blocks, sequential fuel injection, forged steel connecting rods, a one-piece cast camshaft, and a magnesium intake manifold. The cylinders are lined with silicon/aluminum, and a Variable Length Intake Manifold is fitted.

Additional features include DOHC aluminum cylinder heads with 4 valves per cylinder with independent continuously variable valve timing on both the intake and exhaust sides. A new electronically controlled cooling system has eliminated the need for a mechanical thermostat for improved engine warm-up and optimum control of engine temperature. It was succeeded by the M278 engine.

Mercedes-Benz M273 Motor

Specifications

  • Production 2006–
  • Configuration Naturally aspirated 90° V8
  • Displacement 4.7 L (4,663 cc)
    • 5.5 L (5,461 cc)
  • Cylinder bore 92.9 mm (3.66 in)
    • 98 mm (3.86 in)
  • Piston stroke 86 mm (3.39 in)
    • 90.5 mm (3.56 in)
  • Block material Aluminum
  • Head material Aluminum
  • Valvetrain DOHC 4 valves x cyl. and continuous VVT
  • Fuel system Sequential fuel injection
  • Power output 250–285 kW (340–387 PS; 335–382 hp)
  • Torque output 460–530 Nm (339–391 lb-ft)

Versions and Applications

M273 E47

The E47 is a 4.7 L (4,663 cc) version. Bore and stroke is 92.9 mm × 86 mm (3.66 in × 3.39 in). Output is 250 kW (340 PS; 335 hp) at 6000 rpm with 460 Nm (339 lb-ft) of torque at 2700-5000 rpm.

Applications:

  • 2007– GL450
  • 2007–2018 S450
  • 2007–2019 ML450

M273 E55

The E55 is a 5.5 L (5,461 cc) version. Bore and stroke increased to 98 mm × 90.5 mm (3.86 in × 3.56 in). Output is 285 kW (387 PS; 382 hp) at 6000 rpm with 530 Nm (391 lb-ft) of torque at 2800-4800 rpm.

Applications:

  • 2006–2011 E500/E550
  • 2006–2010 CL500/CL550
  • 2006–2017 CLS500/CLS550
  • 2006– GL500/GL550
  • 2008-2019 ML500/ML550
  • 2006–2009 S500/S550
  • 2006–2009 CLK500/CLK550

*Note: 500 or 550 model naming varies depending on geographical market.

Mercedes-Benz M273 Cutaway