Dorman - First Stop Brake Master Cylinder M630339

Dorman - First Stop Brake Master Cylinder M630339 - view 2

Dorman - First Stop Brake Master Cylinder M630339 - view 3

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Dorman - First Stop Brake Master Cylinder P/N:M630339

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$138.99

MPN: M630339

Item Package Quantity: 1

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Dorman - First Stop Brake Master Cylinder P/N:M630339

$138.99

Description

Convert brake-pedal force into the hydraulic pressure your truck's brake circuits rely on with the Dorman - First Stop Brake Master Cylinder M630339. It installs as a direct-fit replacement for the 2002-2005 Dodge Ram 1500 (All engines), engineered to drop in like the original master cylinder on the listed application.

Feature highlights:

100% new: built entirely from new materials — not remanufactured.
Aluminum housing: the cylinder housing is made to match the casting material of the original part for similar performance.
EPDM seals: rubber components use a high-quality EPDM compound for resistance to glycol-based brake fluid.
Made to meet SAE International standards.

This unit has two outlets and a 1.313 in bore diameter; the rearward outlet is M10 x 1.0 and the secondary outlet thread is M12 x 1.0 with a 1 mm pitch. The reservoir and sensor are included; mounting hardware is not included — consult the vehicle service information for the correct fasteners and whether they may be reused. Country of origin: China.

Interchange: 100-2686 · 1002686 · 13694 · 13-3092 · 133092 · 10-2928 · 102928 · 10-3092 · 103092 · 130.67028 · 5102032AA · 355-40065 · 35540065 · M4078 · NM4078 · MC390821 · F140677 · MC140677 · Manufacturer part number M630339

Manufacturer's Description

Product Specs

Buyer's Guide

Interchange Part Numbers

This part cross-references / interchanges with the following part numbers:

100-2686, 13694, 13-3092, 10-2928, 10-3092, 130.67028, 5102032AA, 355-40065, M4078, NM4078, MC390821, F140677, MC140677

Frequently Asked Questions

Does this master cylinder fit my vehicle?

It's a direct-fit replacement for the 2002-2005 Dodge Ram 1500 (All engines). Check the Buyer's Guide tab to confirm it matches your specific truck.

Does it include a reservoir and sensor?

Yes. Both the reservoir and the sensor are included. Mounting hardware is not included with this master cylinder.

What is the bore diameter and outlet size?

The master cylinder has a 1.313 in bore and two outlets — a rearward M10 x 1.0 outlet and a secondary M12 x 1.0 outlet with a 1 mm thread pitch.

Is this a remanufactured unit?

No. It's 100% new, built entirely from new materials to meet SAE International standards, with EPDM rubber components for resistance to glycol-based brake fluid.

What are signs the master cylinder may need replacing?

A pedal that slowly sinks under steady pressure, a spongy or soft pedal, or unexplained brake-fluid loss. Diagnose the cause first; if the master cylinder is at fault, this replaces it.