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SI Siegenia Tilt Slide Patio Door Drive Gear Replaces 1870mm 2100mm

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Siegenia SI Tilt & Slide Patio Repair Drive Gear 25mm, 30mm, 35mm Backset Replaces The Old 1870mm & 2100mm Range Patio Locks

  • 7mm spindle 
  • Length: Choose GR160 for the old 1870mm or GR200 for the old 2100mm
  • 1601 - 2000 GR160 Replaces the old 1870mm: The old faceplate had stamped on it SI 3/PZ GR4 ATL FFH 1650 - 2150 (N:B please check the actual lock dimension drawing we show to ensure your patio falls into this size range)
  • 2001 - 2400 GR200 Replaces the old 2100mm: The old faceplate had stamped on it SI 3/PZ GR4 ATL FFH 1880 - 2380 (N: B please check the actual lock dimension drawing we show to ensure your patio falls into this size range)
  • Locking Points: rollers 
  • Backset: 25mm, 30mm, 35mm

Spindle to Key: 200mm the door handle and cylinder lock are 2 separate gear boxes from each other and allow the patio to be operated from inside and outside.
The faceplate often had stamped on it SI 3/PZ GR4 ATL FFH 1650 - 2150 or 1880 - 2380 (This is the size range that the lock would cover. The measurement is taken from the top corner to bottom corner of the full length of the patio on the handle side) However Siegenia ceased manufacture of these locks approx. 2015 and therefore those specific locks are now obsolete and replaced by a lock system that is no longer compatible (Titan AF System) and the connecting teeth will not fit.

However we have sourced this new system that is compatible and will fit the teeth connectors as it is part of the same Favorit range and works just the same as long as you move the roller cam striker frame keeps to suit the new as they are in a different position and have checked the correct backset and size range that it covers as within your existing door lock height range.

Do not only measure the lock mechanism include the corner extensions that connect to it at the top & bottom. This is the FFH (full frame height sometimes called rebate height) Pick the mechanism that falls between these sizes.
The lock is then simply cut down to size with a hacksaw leaving enough connecting teeth underneath to link into the corner extensions.

Underneath the faceplate are teeth to connect to any corner drive gears. (the length range of the teeth are able to be shortened by 250mm from the top & also the bottom to accommodate shorter height ranges)

This patio generally has handles to both the inside and outside faces of the door and has a separate euro profile door cylinder lock to dead lock the patio doors (although some fabricators have been known not to use this and fit either a handle to the internal only or a blanking plate externally to cover the separate cylinder lock)

Siegenia patio drive gears come with the lock in the central open position. Inside the gearbox Siegenia position the gear with some break off burrs inside the lock to prevent the lock moving whilst it is cut down to length to suit the particular patio. On first operation it will feel like the lock is jammed but as you exert some force on the handle you will find the burrs break off and the lock will now run free from here on in.


Siegenia SI Tilt & Slide patio replacement door lock repair drive gear that replaces the old and now obsolete SI 3/PZ GR4 1870 & 2100 range of patio drive gears. These are no longer made by Siegenia and therfore the only option is to use the new SI GR160 or GR200 range we have sourced which will fit into the connecting corners once cut down to size to suit your specific patio height. These are genuine SI Siegenia new parts which have supeseded the old system.

More Information
BrandSiegenia Aubi

Orders for stock items received by 1pm (Mon – Fri, excluding bank holidays and holiday shutdowns) will be dispatched the same day by Royal Mail or Carrier. We also do our best to despatch any orders received after 1pm on the same day also, we just can’t guarantee orders received after this time will be dispatched the same day. Orders received on a Friday may be delayed by the weekend for delivery.

We deliver across all countries, with estimated arrival times as follows:

  • UK Mainland: from next day, up to five working days depending on chosen shipping method
  • Scottish Highlands: 3-5 working days
  • Northern Ireland, Isle of Man and Isles of Scilly: 3-5 working days
  • Republic of Ireland: Varies
  • Channel Islands: 3-5 working days
  • Europe: from 3-5 working days, up to 2-3 weeks depending on distance from UK
  • Rest of the World: 2-3 weeks

To see more detailed information and a full breakdown of our courier services we use, please click here.

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