check how many A s are in the part number 

LAND ROVER DISCOVERY SPORT L550 ESTATE DOOR TALIGATE BOOT LOCK FK72A442A66AC 

PLEASE MAKE SURE THE PART NUMBER IS CORRECT   f k 7 2 "A"4 4 2 a 6 6 a c  MAKE SURE 

 ALL DIGITS ARE CORRECT AS I HAVE HAD 8 RETURNS WITH PEOPLE NOT CHECKING CORRECTLY

this is for models with the manual lift tailgates 

brand new never fitted