421GC121A | Mack E6 Screw, New | ESC-8406 Product OverviewThis component is designed as a direct replacement, engineered to meet OEM specifications for proper fitment, function, and durability in demanding diesel engine applications. Applications Engine: Refer to OEM specifications Models: Heavy-duty trucks, buses, and industrial equipment Key Features OEM-Equivalent Fit: Designed to match original equipment specifications. Durable Construction: Built to withstand demanding operating conditions. Precision Manufacturing: Ensures consistent performance and reliability. Reliable Operation: Supports proper system function and longevity. About PAIPAI Industries® is a leading manufacturer and distributor of quality service parts for heavy-duty diesel engines. With a commitment to precision engineering and strict quality control standards, PAI delivers reliable aftermarket solutions designed to meet or exceed OEM specifications. Trusted by professionals worldwide, PAI products are built for durability, performance, and consistent fitment across a wide range of applications. Quality Commitment (ISO 9001:2015)This product is manufactured in facilities operating under ISO 9001:2015 certified quality management systems, ensuring consistent quality, traceability, and continuous improvement across all production processes. Cross Reference Part Numbers 421GC121A, 421GC121, 421GC136, 421GC121A Free Shipping We offer free shipping on orders $250 and above! For orders under $250, standard shipping rates apply. If you need expedited shipping such as Next Day Air or 2nd Day Air, just give us a call and one of our sales representatives will help you get the order placed within the timeline you need! Warranty 2 year warranty applies!
