Mercedes-Benz M176/M177/M178 upgrade turbochargers kit Bolt-on solution for Mercedes-Benz M176/M177/M178 engine power gain, designed to work with stock exhaust manifold and other engine units. Comes in two options - Stage 1 and stage 2, specifications and compatibility list written below. STAGE 1 Turbosystems upgrade turbochargers for Mercedes-Benz M176/M177/M178 features: standard sleeve bearing system with upgraded trust bearing for higher boost and performance; reinforced enlarged 9+0 blades machined from the solid compressor wheels - 51/63mm; enlarged turbine wheels - 12 blades 54/49mm; refurbished housings; CNC machined housings; balanced on VSR; Power range: up to 800+ hp STAGE 2 Turbosystems upgrade turbochargers for Mercedes-Benz M176/M177/M178 features: dual ceramic ball bearings; reinforced enlarged9+0 blades machined from the solid compressor wheels - 53/65mm; enlargedturbine wheels - 10 blades 55/49mm; refurbished housings; CNC machined housings; balanced on VSR; Power range: up to 850+ hp When installing new turbocharger we recommend to read our Installation guide.