A 15/16-inch-bore master cylinder is a useful starting point when replacing a matching unit or choosing a brake component for a custom build. The Wilwood options below are the closest exact-bore matches; the A-Premium and PHILTOP units are vehicle-specific alternatives with different bore specifications. Check bore size, brake type, mounting, outlet arrangement, and vehicle fitment before ordering.
| Product | Best suited for | Listed bore |
|---|---|---|
| Wilwood 260-13375-BK Tandem Outlet | Buyers seeking a black-finish 15/16-inch unit | 15/16 inch |
| Wilwood 260-13375-P | Buyers comparing a basic aluminum tandem option | 15/16 inch |
| A-Premium Brake Master Cylinder | Listed classic Ford and Mercury manual-brake applications | 1 inch |
| Wilwood 260-13375-BK Kit | Buyers seeking an integral-reservoir Wilwood kit | 0.938 inch |
| PHILTOP Brake Master Cylinder | Listed 2000s GM-model replacement applications | 0.95 inch |
Wilwood 260-13375-BK Tandem Outlet
Best for: Buyers who need a 15/16-inch-bore tandem master cylinder and want a black E-coat finish. The listing identifies an aluminum body, pushrod, and compatibility with most domestic cars and trucks from the mid-1960s to the present.
It is selected as a direct search match because the product name specifies a 15/16-inch bore and tandem outlets. Wilwood describes its master cylinders as designed for performance, durability, and servicing. Confirm the application and installation details for your particular vehicle rather than relying only on the broad compatibility statement.
Limitation: The provided features do not specify outlet thread sizes or vehicle-by-vehicle fitment.
Wilwood 260-13375-P Aluminum Tandem Cylinder
Best for: Buyers looking for a straightforward aluminum tandem master cylinder with the exact 15/16-inch bore listed in the product name. Its listed package weight is 1.498 kilograms, and the package dimensions are 34.1 by 13.4 by 13.9 centimeters.
This option is included because its bore and tandem design align directly with the search. It may suit shoppers comparing Wilwood 15/16-inch parts who do not need the black finish and pushrod specified for the other Wilwood listing. Verify included components and vehicle fitment before purchase.
Limitation: The supplied feature information does not provide vehicle applications, outlet details, or finish.
A-Premium Brake Master Cylinder With Reservoir
Best for: Owners of listed classic Ford or Mercury models with manual brakes who need a vehicle-specific replacement. Applications include select Fairlane, Falcon, Maverick, Mustang, Ranchero, Torino, Comet, Cougar, Cyclone, and Montego model years. The listing specifies a 1-inch bore, so this is not an exact 15/16-inch match.
The reference numbers include M39495 and several Ford part numbers. It is selected as a relevant alternative for readers whose vehicle fitment matters more than matching the search bore exactly. Check the product compatibility system and compare the reference number with the part being replaced.
Limitation: It is specified for manual-brake models and has a larger bore than 15/16 inch; avoid it if your application requires an exact 15/16-inch unit.
Wilwood 260-13375-BK Integral Reservoir Kit
Best for: Buyers comparing a Wilwood tandem master cylinder listed with an integral reservoir, aluminum construction, black paint, and kit packaging. The product specifies a 0.938-inch bore and a 1.100-inch stroke. A 0.938-inch specification is close to, but not exactly, 15/16 inch, which is 0.9375 inch.
This listing is useful when the reservoir and stroke details are important to the comparison. The listed package dimensions are 13.6 by 5.55 by 5.3 inches, and the package weight is 3.46 pounds.
Limitation: The product information does not identify specific vehicle fitment or list the kit contents in detail.
PHILTOP Brake Master Cylinder With Reservoir
Best for: Owners of listed 2000–2005 Grand Am, 2000–2003 Malibu, 2000–2004 Alero, or 2004–2005 Classic models seeking a replacement with a reservoir. The listing specifies an aluminum body, two outlets, a sensor, and a 0.95-inch bore. It is near 15/16 inch but not an exact listed match.
The stated replacement references are M630753 and 18060787. This product is included for its explicit vehicle applications and component details, not as a universal 15/16-inch cylinder. Compare the OE number and vehicle year before choosing it.
Limitation: The listed bore differs slightly from 15/16 inch, and the supplied fitment list is limited to specific GM models.
Buying Guide: How To Choose A 15/16 Master Cylinder
Does the bore need to match exactly?
Start with the bore specified for the vehicle or brake system. The Wilwood listings identify a 15/16-inch bore; the other two products list 1 inch and 0.95 inch. A small difference can matter to brake-system operation, so do not treat near-matching dimensions as automatic substitutes.
What should you verify before ordering?
- Application: Confirm year, make, model, and whether the vehicle has manual or power brakes. The A-Premium listing specifically states manual-brake fitment.
- Design: Compare tandem configuration, reservoir style, pushrod inclusion, outlet count, and any required sensor.
- Connections: Check outlet location, thread size, mounting, and line routing against the existing unit. These details are not provided for every product here.
- Part numbers: Use listed OE or reference numbers to cross-check a replacement when available.
Should you choose a vehicle-specific or general-purpose option?
A vehicle-specific cylinder is the better starting point when its fitment details match your car. A broadly described performance cylinder may be more relevant for a custom setup, but you must verify its dimensions and connections. Product names and general compatibility statements alone do not confirm fit.
Frequently Asked Questions
What does 15/16 inch equal in decimal form?
15/16 inch equals 0.9375 inch.
Is a 0.938-inch bore the same as 15/16 inch?
It is a rounded value very close to 15/16 inch, but the listing does not state the exact fraction. Confirm the required specification before ordering.
Is a 1-inch master cylinder interchangeable with a 15/16-inch unit?
Not automatically. The A-Premium listing specifies a 1-inch bore, so use it only when the vehicle application and brake-system requirements call for that specification.
Do all products listed here fit every car?
No. The A-Premium and PHILTOP listings give specific vehicle applications, while the Wilwood listings do not provide complete vehicle-by-vehicle fitment details in the supplied information.