Used Ford Sierra Wiper Motor

The Ford Sierra was produced from 1982 to 1993, with a significant facelift in 1987 that updated the front end and interior. For wiper motors, the key split is between the pre-facelift (1982–1987) and post-facelift (1987–1993) cars, as the wiper mechanism and motor fitment can differ across that boundary. Always confirm the exact part against your registration with the breaker.

Your 1985 car is a pre-facelift Sierra and your 1989 car is a post-facelift model, and these sit either side of the 1987 facelift boundary. Whether the front wiper motor crosses that boundary is not straightforward, so you should confirm compatibility with the breaker against both registrations rather than assume it will swap straight over.

For wiper motors, trim level does not affect fitment, so a motor from a GL, Ghia, or XR4i should be mechanically identical for the same generation and the same front or rear position. You may simply find cosmetic differences in how ancillary brackets or covers look, but these don't affect function. Confirm generation and front or rear position with the breaker rather than worrying about trim.

No — front and rear wiper motors are different units with different mounting, speed settings, and connector configurations, so you must specify which one you need when contacting a breaker. Make sure you tell them whether you want the front motor or the tailgate rear motor to avoid being sent the wrong part.

Engine size and type have no bearing on wiper motor fitment — the motor is determined by the generation of the car (pre- or post-1987 facelift) and whether it is a front or rear unit. You can safely disregard whether a donor car had a 1.6, 2.0, or any other engine when sourcing this part.

The Sierra and Granada were different platforms and the wiper motor mounting and electrical connections may not match, even though they share a Ford lineage. This is a cross-model fitment question that the breaker is best placed to answer by comparing the part numbers against your registration.