Generate firm hydraulic pressure for the brake system with the Dorman - First Stop Brake Master Cylinder, part number M39403. It installs as a direct-fit replacement for the 1976-1978 Toyota Pickup, giving you a straightforward way to replace a worn or leaking original master cylinder on the listed application.
A brake master cylinder converts the force from the brake pedal into the hydraulic pressure that operates the vehicle's brakes, so a healthy unit is essential for a firm, consistent pedal.
- Core function: Pressurizes brake fluid to send force through the hydraulic lines when you press the pedal.
- Direct-fit design: Built to replace the original master cylinder on the listed application.
- Reliable replacement: A practical fix when the original leaks internally or fails to build pressure.
Signs this part may need replacing include a pedal that slowly sinks toward the floor under steady foot pressure, a spongy pedal, or fluid loss. These symptoms can have other causes, so diagnose the system before replacing; if a failed master cylinder is the cause, this unit replaces it.
Interchange: 18M209 · 83-22704 · 8322704 · M900409 · 100-1642 · 1001642 · M-56704 · M56704 · 072-6299 · 0726299 · 11724 · 13-2447 · 132447 · 11-2447 · 112447 · 130.44704 · MC510650 · 355-76117 · 35576117 · M52447 · MC39403 · 4720135043 · F96803 · MC96803. Manufacturer part number M39403.
This part cross-references / interchanges with the following part numbers:
18M209, 83-22704, M900409, 100-1642, M-56704, 072-6299, 11724, 13-2447, 11-2447, 130.44704, MC510650, 355-76117, M52447, MC39403, 4720135043, F96803, MC96803
