Ford P100 Door Lock Mechanism Replacement Parts

The Ford P100 is a pick-up truck produced from 1983 to 1992, based on the Sierra platform, and it absolutely has door lock mechanisms — one on each door, side-specific. The P100 is a two-door pick-up cab, so there are only two doors (driver's OS and passenger's NS) and no rear doors to consider. When sourcing a used lock mechanism, make sure you specify which side you need.

The P100 ran through two distinct phases: the original 1983–1988 models and the facelifted 1988–1992 models, and there were updates to the bodywork and door components between these phases. A lock mechanism from within the same phase is your safest starting point, but whether a pre-facelift part crosses over to a post-facelift vehicle is something you should confirm with the breaker against your registration number. Always treat the 1988 facelift as a potential boundary for this part.

A 1986 P100 is a pre-facelift model and a 1990 P100 is post-facelift (1988 onwards), which means they sit either side of a known design boundary. The door and surrounding bodywork were revised at the facelift, so fitment across this cut-off is uncertain — run the breaker's part against both registration numbers before committing. Staying within the same phase (pre-1988 or post-1988) is the more reliable approach.

The P100 was offered in trim levels including Base, L, and GL, but trim level does not affect the door lock mechanism itself — the door frame and lock hardware are the same across trims within the same phase. You may find minor cosmetic differences such as interior door furniture, but the lock mechanism fitting to the door is not trim-dependent. Focus on matching the year phase and the correct side (NS or OS) rather than worrying about trim.

On a UK-specification P100, the offside (OS) is the driver's right-hand side and the nearside (NS) is the passenger's left-hand side — these lock mechanisms are not interchangeable between sides. When contacting a breaker, always state NS or OS clearly alongside your registration number to make sure you get the correct part. Fitting the wrong side will mean the lock geometry is reversed and the mechanism will not operate correctly.

The P100 is Sierra-based and shares some underpinnings, but the P100's cab doors are unique to the pick-up bodyshell and are not the same as Sierra saloon or estate doors. Whether any internal lock mechanism components cross over from the Sierra is something you should raise directly with the breaker, who can compare part numbers. Do not assume Sierra parts will drop straight in without verification.