M MATI Brake Master Cylinder for Polaris ATVs — Front Left Replacement 2050078, OEM-fit Durable Construction

M MATI front left brake master cylinder is a direct-fit replacement assembly made to OEM specifications for select Polaris ATVs, offering reliable brake pressure and long service life.

This brake master cylinder assembly (Manufacturer Part # 2050078; replacement for 2050072 and 5131146) is designed as a like-for-like replacement for many Polaris ATV models from the mid-1990s to early 2000s. Built using upgraded materials and precise manufacturing tolerances, it restores brake function after failure or wear and is shipped as a single boxed unit ready for installation. The part is intended for the left/front brake circuit on compatible models; confirm fitment against your vehicle year and model before ordering.

Will this master cylinder fit my Polaris ATV?

Compatibility covers a range of Polaris models and years—check your vehicle against the detailed fit list. This assembly fits many Sportsman, Xplorer, Xpress, Magnum, Xpedition, Worker, Diesel and Big Boss variants across 1995–2001 model years where the OEM part numbers match.

• Manufacturer Part #: 2050078; replacement Part#: 2050072, 5131146.
• Fits models including Sportsman 500 (1996–2001), Sportsman 335 (1999–2000), Magnum 325/500 (2000/1999–2000).
• Also fits Xplorer, Xpress, Xpedition, Worker and Diesel 455 model years listed.
• Always cross-reference your VIN, existing part number, and year/model before purchasing.

How does installation and compatibility affect performance?

Installed correctly, this master cylinder re-establishes consistent hydraulic pressure for the front/left brake circuit, matching original mounting points and port locations to simplify installation. It is made to OEM-style dimensions so lines, banjo fittings, and mounting bolts align without modification on compatible machines.

• Direct-swap design for the listed Polaris models—no custom fabrication typically required.
• Precision sizing reduces the risk of leaks and restores pedal feel when bled properly.
• Packaged as a single assembly in a protective box for safer shipment and handling.
• Follow manufacturer torque specs and bleed procedure for best results.

What materials and quality features does this assembly offer?

This M MATI assembly is produced to mirror OEM specifications using durable materials and controlled machining to deliver dependable service life. The construction focuses on resistance to wear and consistent hydraulic sealing under normal ATV operating conditions.

• Built to OEM-spec geometry for correct piston travel and fluid displacement.
• Precision machined components for improved sealing and extended life.
• Quality control checks to ensure dimensional accuracy and fitment.
• One-year product service support for manufacturing defects or fitment issues.

What should I expect after purchasing—packaging, service and returns?

The product ships as one Brake Master Cylinder Assembly packed in a protective box to prevent transit damage. M MATI offers one-year product service—contact the seller if you encounter fitment issues, defects, or questions about installation.

• Package contents: 1 x Brake Master Cylinder Assembly boxed for shipping safety.
• Service promise: 1-year support for product problems; contact seller for resolution.
• Keep your receipt, part number, and photos of the part and vehicle for service claims.
• Professional installation or careful DIY following a service manual is recommended.

Who is this for: This front left brake master cylinder is aimed at Polaris owners, mechanics and restoration specialists working on late-1990s to early-2000s ATVs who need a dependable, OEM-spec replacement for part numbers 2050078, 2050072 or 5131146. It suits anyone restoring brake performance on Sportsman, Magnum, Xplorer, Xpress, Xpedition, Worker or Diesel models listed in the fitment, and who wants a boxed, ready-to-install assembly backed by a one-year service option.