Technic 8275 Motorized Bulldozer from BrickLink Studio
LEGO Technic Bulldozer Battle sets 856 and 8275 review OLD VS NEW - YouTube
BrickLink Reference Catalog - Large Image of Set 8421-1
Set 8275-1 : Motorized Bulldozer [Technic] [BrickLink]
My collection of Lego Technics with 3 more on the way that I bought off E-bay. Lego technic 8275 motorized bulldozer, lego technic 42009 mobile crane mk II and lego technic 8258