Hello!
The FRDM-KL03Z Board uses two crystals: a 32.768 kHz crystal with part number ABS25-32.768KHZ-T, and a 8MHz crystal with part number ABM3B-8.000MHZ-B2-T.
You can find these and any other part number of the FRDM-KL03Z in the BOM and Design Files, with the following link:
https://www.nxp.com/webapp/Download?colCode=FRDM-KL03Z_BOM_SCH&appType=license&location=null
I hope that this helps,
Edwin.
