Engine for Mercedes Benz S-Class W221 S500 CGI 4.7 V8 Petrol M278.932 278.932

Description

The basic M278 has a displacement of 4,663 cc (4.7 L; 284.6 cu in) with a bore and stroke of 92.9 mm × 86 mm (3.66 in × 3.39 in). Output is 320 kW (429 bhp; 435 PS) at 5,250 rpm with 700 N⋅m (516 lb⋅ft) of torque at 1,800-3,500 rpm for S-Class, CL-Class, SL-Class, and GL-Class models.[2] CLS-Class, E-Class, and M-Class models are detuned to 300 kW (402 bhp; 408 PS) with 600 N⋅m (443 lb⋅ft) of torque at 1,600 rpm.[6] Although it no longer corresponds with the engine displacement, all of the above models are still badged as “550”. The GL-Class, besides the GL550 above, also features the GL450 trim that carries a detuned version of the 4.7 L engine making 270 kW (362 bhp; 367 PS) and 550 N⋅m (406 lb⋅ft)[7]
For 2014 S-Class models (chassis code W222), power is increased to 335 kW (449 bhp; 455 PS) at 5,250 rpm, while torque remains at 700 N⋅m (516 lb⋅ft) between 1,800-3,500 rpm. .[8]
These engines are mated to the 7G-Tronic 7-speed automatic transmission, and the new 9G-Tronic 9-speed automatic transmission.
Applications:[2]
2011–2017 S 500/S 550
2011–2014 CL 500/CL 550
2015-2017 S 500 Coupé/S 550 Coupé
2011–2018 CLS 500/CLS 550
2012–2020 SL 500/SL 550
2012–2014 E 500/E 550
2012-2014 ML 500/ML 550
2013–2014 GL 450
2013–2019 GL 500/GLS 500/GL 550/GLS 550