Used BMW Z4 Window Winder Motor

No — the E85 (2002–2008) and E89 (2009–2016) are entirely different generations with different door structures, so their window winder motors are not interchangeable. Always quote your registration to the breaker so they can confirm the correct generation and side (NS or OS) before ordering.

Both years fall within the E85 generation (2002–2008), so there is a strong chance the motors are compatible, but you must confirm the side — NS (nearside, passenger) or OS (offside, driver) — as these are not interchangeable with each other. Give the breaker your exact registration to verify the part number before committing.

Engine and trim designation do not affect window winder motor fitment on the Z4; what matters is the generation (E85 or E89) and the side (NS or OS). You may find cosmetic differences in interior trim between spec levels, but the motor itself fits the door regardless of which engine is under the bonnet.

Both fall within the E89 generation (2009–2016), so the motors are likely compatible provided you match the correct side (NS or OS). Confirm the exact part number with the breaker against your registration to be certain, as minor running changes can occur within a generation.

The E85 received a facelift in 2006, and while both pre- and post-facelift cars sit within the same generation (2002–2008), whether the window winder motor crosses that facelift boundary is something you should confirm with the breaker against your registration, as running changes to door internals can occur at a facelift point. Make sure you also specify NS or OS when requesting a quote.

Yes — the most important detail beyond the year is the side: NS (nearside, passenger/left) or OS (offside, driver/right), as these motors are completely side-specific and are not interchangeable. Giving the breaker your full registration is the safest approach, as it lets them confirm the generation and rule out any mid-production changes.