Turn every press of the brake pedal into hydraulic braking pressure with the Dorman First Stop Brake Master Cylinder M97938. It installs as a direct-fit replacement for the 1977-1983 Ford E-350 Econoline, the 1977-1983 Ford E-350 Econoline Club Wagon, and the 1977-1979 Ford F-350 (engine: All). Dorman designs it to replicate the original master cylinder's design, function, and performance on those vehicles, and builds it from new, high-quality materials.
The master cylinder sends that pressure through the brake lines to the wheel brakes. Signs it may need replacing include a soft or sinking pedal, fluid seeping from the unit, or a fluid level that keeps dropping.
- Precise replacement: The cast-iron cylinder housing is built to match the casting material of the original part for similar performance.
- Durable design: Every rubber component is made from a high-quality EPDM compound that resists glycol-based brake fluid.
- 100% new: Made entirely from new materials, with quality and safety in mind.
- Strict specifications: Made to meet rigorous SAE International standards.
Specifications: 1.063 in bore diameter; 2 outlets; 3/8-24 in rearward outlet; 7/16-24 secondary outlet thread; reservoir included; sensor and mounting hardware not included. Country of origin: China.
Consult the vehicle service information for the correct fasteners and whether the originals may be reused. Bleed the unit and the brake system as the service procedure directs. This part is sold individually, and the listed applications use one per vehicle.
Interchange: 783-42046 · 83-42020 · 83-42046 · 100-2496 · M-85020 · M-85046 · 13-1682 · 10-1682 · 130.65046 · 131.65046 · 355-54165
18M97 · M900278 · 11682 · MC97938 · MC979381 · D7TZ2140A · 97938 · M1682 · NM1682 · MC39116 · F97938 · 78342046 · 8342020 · 8342046 · 1002496 · M85020 · M85046 · 131682 · 101682 · 13065046 · 13165046 · 35554165
This part cross-references / interchanges with the following part numbers:
18M97, 783-42046, 83-42020, 83-42046, M900278, 100-2496, M-85020, M-85046, 11682, 13-1682, 10-1682, 130.65046, 131.65046, MC97938, MC979381, 355-54165, D7TZ2140A, 97938, M1682, NM1682, MC39116, F97938
