OEM replacement engine Use on Wacker Neuson BS50-4As, BS60-4As, BS70-4As Rammer Quiet and fuel efficency 4 Cycle engine FUEL EFFICIENT, HIGH OUTPUT OPERATION Precision camshaft design offers precise valve timing and optimal valve overlap for better fuel efficency OHC design for increased efficiency and optimal power transfer High compression ratio for better fuel efficiency SMOOTH PERFORMANCE Precision engineered components result in lower vibration Ball bearing supported crankshaft for greater stability EXCEPTIONALLY QUIET Large capacity, multi-chamber exhaust system Reduced mechanical noise due to light weight, noise-reducing materials Forged steel crankshaft and rigid crankcase Sophisticated air intake system PROVEN RELIABILITY Cast iron cylinder sleeve High quality materials, fit, and finish Fuel Valve EASY STARTING Heavy duty recoil starter Automatic mechanical de-compression system EMISSIONS COMPLIANT CARB and EPA certified No catalyst necessary