Mercedes-Benz GL-Class 2009 Owners Manual - Manual (Page 426)

Engine
424
Model GL 320 BlueTEC (164.825) 21 GL 450 (164.871) 21 GL 550 (164.886) 21
Firing order 1-4-2-5-3-6 1-5-4-2-6-3-7-8 1-5-4-2-6-3-7-8
Poly-V-belt 2 035 mm 2 404 mm 2 404 mm
Technical data