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Honda OEM Part 45521-K21-901 PLATE, DIAPHRAGM

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Honda OEM Part 45521-K21-901 PLATE, DIAPHRAGM

  • Product Code: 45521-K21-901

$2.20

  • Genuine Honda OEM part
  • New in original packaging
  • Fits the models listed in the fitment chart
  • Easy, no-hassle returns

This product is vehicle specific.

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Ships in 4 to 9 days

Genuine Honda OEM Plate, Diaphragm (part number 45521-K21-901) from the Front Brake Master Cylinder (1) diagram. It fits Honda GROM125AC, PCX150AC, CBR300R5A, GROM125AAC, C125AAC, CBF300NAAC and 70 more built from 2014 to 2026.

Fits these models

  • CB500FAAC: 2014, 2016–2019, 2021
  • CB500FAC: 2014, 2016–2019
  • CB500XAAC: 2014–2015, 2019–2021
  • CB500XAC: 2014–2016, 2019–2020
  • CBR500RAAC: 2014–2016, 2019–2021
  • CBR500RAC: 2014–2016, 2019–2020
  • GROM125AC: 2014, 2017–2020, 2022–2026
  • GROM1252AC: 2015, 2022, 2024–2026
  • PCX150AC: 2015–2017, 2019–2022
  • CBR300R5A: 2017–2022
  • CBR300R5AC: 2017–2022
  • CBR300RA5AC: 2017–2022
  • GROM125AAC: 2018–2020, 2022, 2024–2026
  • C125AAC: 2019–2024
  • CBF300NAAC: 2019–2025
  • and 61 more models

See the Fitment tab for the full list with model codes.

Need Help Finding the Right Part?

Not sure it fits? Ask before you order — our team will check the part for your machine.

For a faster answer, include:

  • Year, make and model of your machine
  • VIN or frame / serial number
  • OEM part number or a photo of the old part
Email Us (630) 886-1221

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Part Details

Brand Honda
Sku 45521-K21-901
Name PLATE, DIAPHRAGM

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