The BD Diesel On/Off Lockup Kit, part number 1600411, is an essential upgrade for 1999-2003 Ford F-250 Super Duty trucks equipped with the 4R100 transmission. Designed to improve torque converter operation, this kit converts the factory long soft pulse PWM lock-up to a short, crisp On/Off lockup, significantly extending the life of your torque converter and enhancing towing performance. The kit includes a new On/Off Valve assembly that replaces the OEM PWM valve in the pump, providing a straightforward, drop-in installation that requires no special tooling or machining. It also comes with a new gasket and high-quality Viton O-rings, ensuring a reliable seal and long-lasting performance. The kit is recommended for experienced technicians and should be used in conjunction with the 1600410 kit for optimal results. Built as an OEM replacement part, it offers a cost-effective way to restore or improve your vehicle’s transmission operation, backed by a 12-month or 12,000-mile warranty. Crafted for ease of installation and durability, this lockup kit is an ideal solution for fleet operators and serious enthusiasts seeking to enhance transmission reliability and towing capacity.
BD Diesel’s long-standing reputation in the diesel aftermarket stems from its commitment to quality and innovation. With roots dating back to 1972 and a focus on performance diesel components, BD Diesel continues to engineer products that meet the demanding needs of heavy-duty applications. Their facilities in British Columbia employ over 60 specialists dedicated to designing and manufacturing high-performance parts, making BD Diesel a trusted name in the industry. This lockup kit is designed with precision and durability in mind, ensuring consistent operation under severe towing and high-horsepower conditions. Proper installation and adherence to the recommended break-in procedures are crucial for maximum longevity and performance.
Whether you’re restoring a fleet vehicle or enhancing your personal diesel truck, the BD Diesel On/Off Lockup Kit delivers reliable, OEM-quality performance to improve your transmission’s efficiency and lifespan.
Features:
- Converts long soft pulse (PWM) lock-up to short, crisp On/Off lockup, extending converter life
- Includes a new On/Off Valve assembly to replace OEM PWM valve in the pump
- Easy drop-in installation with no special tooling or machining required
- Designed for durability with high-quality Viton O-rings and gasket, backed by a 12-month warranty
Fitment:
Ford F-250 Super Duty Lariat 1999 to 2003
Ford F-250 Super Duty XL 1999 to 2003
Ford F-250 Super Duty XLT 1999 to 2003
Ford F-350 Super Duty King Ranch 2003
Ford F-350 Super Duty Lariat 1999 to 2003
Ford F-350 Super Duty XL 1999 to 2003
Ford F-350 Super Duty XLT 1999 to 2003





















