BrickLink - Part 45407 : LEGO Vehicle, Engine Block 4 x 6 x 2 with Wedge Cutouts and Technic Holes [Vehicle] - BrickLink Reference Catalog
1320Video.com - An aluminum engine block, but for legos.... | Facebook
Amazon.com: Goshfun Simulation Dynamic Version V12 Engine Bricks Model with Gearbox, DIY MOC Small Particle Building Block Stem Construction Decoration Set Compatible with Lego (788Pcs) : Toys & Games