CUMMINS QSK50-M1 ENGINE ASSEMBLY POWER 1800 HP at 1800 rpm. – OEM & Aftermarket Solution CUMMINS QSK50-M1 ENGINE ASSEMBLY POWER 1800 HP at 1800 rpm. by is a high-quality spare part designed for heavy equipment and machinery. STOPARTS supplies both OEM and reliable aftermarket alternatives. This part is suitable for: excavators construction equipment mining machinery We provide worldwide delivery and support bulk orders for distributors and service companies. Wholesale deliveries and individual terms of cooperation are available.