This is a spacial brake plate to fit MCD Alloy engine carrier.
If you replace the original plastic with the alloy, this is the part you need.
ATTN: include 1 brake plate
FIT: MCD X-4 Rally vehicles and the RR V-4 With the Enclosed Center Differential (+ or - Feb 2011 or later),Cheetah, Monster, W5 SCT and FT models with MCD alloy engine carrier.
For use in JOFER servo tray sets MVX-314 , MQR-314 and MQR-314S