OIL FILTER MCS SPIN-ON BLACK HARLEY TWIN CAM / M8 UP TO 2020

MCS Spin-On Black Oil Filter: Reliable Performance for Your Harley. This filter is a direct replacement for OEM 63731-99A, designed to provide efficient filtration with a 5-micron medium that protects the engine from impurities and harmful particles. It is compatible with all Harley-Davidson Twin Cam models (1999–2017) and also with Milwaukee-Eight (M8) engines from 2017 to 2020, before the specification change.

Important: Its use is not recommended for M8 engines from 2020 onwards. Starting that year, Harley-Davidson introduced a new filter with a longer body and 25% more filtering surface, to accommodate the higher oil flow required by modern M8s.

For M8 from 2020 onwards, check out our specific MCS references: 920966 (chrome), 920967 (black), 920968 (chrome with nut), 920969 (black with nut).

Technical Specifications

Compatibility

This MCS oil filter is compatible with:

• Softail: From 1999 (Twin Cam)
• Dyna, Touring, and other Twin Cam models: 1999–2017
• Milwaukee-Eight (M8): 2017–2020 (models with standard short filter)

Not compatible with M8 engines from 2020 onwards. For these models, it's recommended to use MCS filters with greater filtering capacity:

• 920966: chrome
• 920967: black
• 920968: chrome with top nut
• 920969: black with top nut

Key Benefits

• Effective filtration: 5-micron medium for maximum engine protection.
• Direct replacement: compatible with OEM 63731-99A.
• Black finish: perfect for maintaining a sleek and clean look.
• Ideal for Twin Cam: from 1999 to 2017 without restrictions.
• Economical and reliable option: MCS quality for daily maintenance.