S300A113 Turbo 173526 631GC5172M3 Turbocharger for E7 12.0L Engine S300A113 replacement turbocharger for E7, EM7 and AI427 12.0L diesel engines. Replaces 173526, 631GC5172M3, 631GC5172AM3X and other listed turbocharger references. Suitable for MR, LE, CV713 and selected IEGR trucks from 2002–2007. Designed for reliable boost response, heavy-load pulling power and commercial fleet operation. Product Overview High-Performance S300A113 Turbocharger for E7, EM7 & AI427 Trucks