Dorman M630171 brake master cylinder for the 1996-1997 Mercedes-Benz E320 and other vehicles turns pedal force into hydraulic pressure for the brakes. The housing matches the casting material of the original part for similar performance.
- Dorman First Stop line master cylinder
- All rubber components are an EPDM compound that resists glycol-based brake fluid
- Made entirely of new materials
- Built to meet SAE International standards
Quick facts
- Part: Dorman M630171 brake master cylinder
- Fits: 1996-1997 Mercedes-Benz E320 and other vehicles
- Material: Aluminum
- Condition: New
A brake pedal that sinks or feels soft, or fluid seen around the cylinder, can mean the master cylinder is worn, though a leaking brake line or caliper can be behind the same signs.
Fits
The vehicles it fits include the 1997 Mercedes-Benz E420 and the 1995-1997 Mercedes-Benz S320, with one master cylinder per vehicle. Open the "Vehicles it fits" section to check your exact model and engine.
Specifications
Fit and size
- Quantity per vehicle: 1
- Master cylinder bore diameter: 25 mm
- Number of outlets: 2
- Rearward outlet size: M10 x 1.0
- Secondary outlet thread diameter: M12 x 1.0
- Primary outlet thread pitch: 1 mm
Build and materials
- Material: Aluminum
- Rubber components: EPDM compound
- Condition: New
- Country of origin: Taiwan
In the box
One master cylinder. The reservoir, sensor and mounting hardware are not included, and any old hardware may not be reusable, so plan on new pieces.
Interchange: 100-4352 · M-11012 · 072-9243 · 11-2790 · 130.35012 · 355-63011
M901175 · M52790 · NM52790 · 0054306501 · MC390465 · MC390491 · F141799 · MC141799
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
M901175, 100-4352, M-11012, 072-9243, 11-2790, 130.35012, 355-63011, M52790, NM52790, 0054306501, MC390465, MC390491, F141799, MC141799
Frequently Asked Questions
Is the Dorman M630171 master cylinder the right one for a 1997 Mercedes-Benz E420?
Yes. Dorman M630171 fits the 1997 Mercedes-Benz E420, one per vehicle. For another model, open the "Vehicles it fits" section and check your year and engine.
Does the M630171 master cylinder come with a reservoir or sensor?
No. Dorman M630171 is the master cylinder only. The reservoir, sensor and mounting hardware are not included.
What size are the outlet fittings on the Dorman M630171?
The rearward outlet is M10 x 1.0 and the secondary outlet thread diameter is M12 x 1.0. The master cylinder bore diameter is 25 mm.
Can a sinking brake pedal mean the master cylinder is worn?
Yes, it can. A pedal that sinks or feels soft, or a fluid leak at the cylinder, can point to a worn master cylinder. Have the brakes checked or repaired promptly.
Are the rubber parts in this master cylinder made for glycol-based brake fluid?
Yes. All rubber components in this master cylinder are made of an EPDM compound that resists glycol-based brake fluid.
