Dorman - First Stop Brake Master Cylinder P/N:M630056
Dorman M630800 brake master cylinder for the 2008-2011 Nissan Titan turns pedal force into hydraulic pressure for the brakes. This Dorman brake master cylinder is precision-engineered to match the design, function and performance of the original.
A soft or sinking brake pedal, a reservoir level that keeps dropping, or brake fluid around the cylinder body can mean the master cylinder is worn, though a leaking brake line or a worn caliper can also be behind them. If the master cylinder is the cause, this one replaces it.
It is a direct-fit 2008-2011 Nissan Titan master cylinder, and each vehicle takes one.
Fit and size
Build and materials
One master cylinder with its reservoir and sensor. Mounting hardware is not included, so plan on new fasteners, since the old ones may not be reusable.
Interchange: 100-2939 · 13-3856 · 11-3856 · 130.42904 · 355-67116
NM55637 · 46010ZR00C
This part cross-references / interchanges with the following part numbers:
Is this Dorman master cylinder right for the 2008-2011 Nissan Titan?
Yes. Dorman M630800 is a direct-fit replacement for the 2008-2011 Nissan Titan, and each vehicle takes one.
Does the M630800 come with the reservoir and sensor?
Yes. Dorman M630800 comes with its single reservoir and sensor. Mounting hardware is not included.
Are the rubber parts in this master cylinder EPDM?
Yes. All the rubber components are EPDM compound, which resists glycol-based brake fluid.
How can I tell if the master cylinder is leaking?
Look for brake fluid around the cylinder body and a reservoir level that keeps dropping. A soft or sinking pedal can go with it, and a shop can test it.
What thread size do the outlets on this master cylinder use?
The cylinder has two outlets. The rearward and secondary outlets are M10 x 1.0, with a 1 mm pitch on the primary outlet.
No reviews yet — be the first to review this product.
Write a Review
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.