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Dorman - First Stop Brake Master Cylinder P/N:M97938
$54.99
Engineered to match the original master cylinder's design, function, and performance on the listed applications, the Dorman - First Stop Brake Master Cylinder (M97938) converts brake-pedal force into the hydraulic pressure that operates the vehicle's brake system. It drops in 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 [All].
- Cast-iron housing: the cylinder housing is built to match the casting material of the original part for comparable performance.
- 100% new: made entirely of new materials, not remanufactured.
- EPDM seals: the rubber components use a high-quality EPDM compound for resistance to glycol-based brake fluid.
- Built to spec: made to meet SAE International standards, with a 1.063 in bore and two outlets (rearward outlet 3/8-24, secondary outlet thread 7/16-24).
The reservoir is included; a sensor is not, and mounting hardware is not included — consult the vehicle service information for the correct fasteners and whether they may be reused. A brake pedal that slowly sinks or feels spongy, or fluid loss at the cylinder, can be signs this master cylinder may need replacing; diagnose the cause before replacing, as other brake components can produce the same symptoms. Country of origin: China.
Interchange: 18M97 · 783-42046 · 78342046 · 83-42020 · 8342020 · 83-42046 · 8342046 · M900278 · 100-2496 · 1002496 · M-85020 · M85020 · M-85046 · M85046 · 11682 · 13-1682 · 131682 · 10-1682 · 101682 · 130.65046 · 13065046 · 131.65046 · 13165046 · MC97938 · MC979381 · 355-54165 · 35554165 · D7TZ2140A · 97938 · M1682 · NM1682 · 2539116 · MC39116 · F97938 · Manufacturer part number M97938.
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, 2539116, MC39116, F97938
Frequently Asked Questions
Which vehicles does the M97938 master cylinder fit?
It's 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 [All]. See the Buyer's Guide tab to confirm your vehicle.
Does it come with a reservoir?
Yes, the reservoir is included. A sensor is not included, and mounting hardware is not included.
What is the bore size and outlet configuration?
It has a 1.063 in bore and two outlets — a rearward outlet sized 3/8-24 and a secondary outlet with a 7/16-24 thread.
Is this a remanufactured unit?
No. It's 100% new, made entirely of new materials rather than remanufactured, and made to meet SAE International standards.
What are signs the master cylinder may need replacing?
A brake pedal that slowly sinks or feels spongy, or fluid loss at the cylinder, can be signs. Diagnose the cause first, since other brake parts can produce the same symptoms.
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Dorman - First Stop Brake Master Cylinder P/N:M97938
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