Filter near VCT
 

Hoping Someone can answer this...

replacing VCT Solenoids on 2010 F150 Platinum, 5.4L 3V. Directly below the VCT solenoids on both sides is a hex head cap (bolt). it sits flush with its housing... Under that cap is a small filter(screen). one of those had a cracked plastic housing... trying to replace but cant for the life of me figure out what that part is...

Thanks

picture would help