2006 GMC Topkick Engine Assemblies
- Replace®8.1L OHV EngineGMC Topkick Block Cast # 12558110 Right Head Cast # 12558162 Crank Cast # 430 298 Left Head Cast # 12558162 2006, 8.1L OHV Engine by Replace®. This premium product is the best way to go for those looking for the highest quality...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$4,901.12