ATS Diesel 1999-2003 Ford 4wd 4R100 Stage 4 Transmission Package

The ATS Stage 4 4R100 transmission package upgrades the factory Ford 4R100, addressing weaknesses in the torque converter, clutch packs, valve body, and line pressure. Designed for over 400hp and heavy towing, it includes a Five Star Torque Converter, Billet Input Shaft, Co-Pilot Transmission Lock-up Controller, Billet Flex Plate, modified transmission pump, high-performance clutch packs, redesigned accumulator pistons, and a deep transmission pan. Suitable for daily driving, heavy towing, aggressive tuning, competition, and modified turbos/injectors. Backed by a 5-year/500,000-mile warranty.