SRAM road shifter component

CarbonNinja

I'm looking to fix a broken SRAM apex 10 speed shifter. A small part cracked inside the main housing and instead of spending 100 bucks on a new one I'd like to replace the prt. It's the white plastic part which the gear cable sits in inside the housing that's connected to the 10 speed gear part. Does anyone know where I could source such a part. Perhaps from a broken shifter ?
Thanks