Era, Saracen, Surelock Replacement Gearbox with Deadbolt

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  • Era, Saracen, Surelock Replacement Gearbox with Deadbolt
  • Era, Saracen, Surelock Replacement Gearbox with Deadbolt
  • Era, Saracen, Surelock Replacement Gearbox with Deadbolt
  • Era, Saracen, Surelock Replacement Gearbox with Deadbolt
  • Era, Saracen, Surelock Replacement Gearbox with Deadbolt
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Frequently bought together:


This multipoint gear box has been used on numerous door locking systems over many years and can be found on some of the major brand doors like B & Q etc.

The 45mm version of this lock is used on the Compoosite door sold By B & Q. The matching cylinder is a 35/35 cylinder in this link.

The gearbox has a deadbolt and a latch and the backset can be either 35mm or 45mm. The same gearbox can be used on the Saracen, Laird and Surelock systems.

The latch is easily turned around to suit both left or right handed doors using a pozi drive screw driver.


A free starbit is included to help the job along.







Simple steps to help you choose the right size backset for your Gearbox







The Backset size is A in the diagram

Measure from the the front of the main faceplate (A in the diagram) to the middle of the spindle hole. This measurement is taken when the gearbox is attached to the main front face plate.

Measurement B is the PZ Centre.





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Frequently Asked Questions

You need to measure the pz (shown as “A” on our guide) and the backset (shown as “B” on our guide).
Click here to go to the guide.

This depends on your existing gearbox and whether an alternative is available and we always have to match up with the existing “holes” in your door. Call us on 01204 652211 and we can help you with this.

The most common bit used to remove a gear box is a torx t20 although in some instances a square drive can be used which can normally found in most drill bit sets.

A Dual spindle has 2 spindles at different heights. This means that the levers / moving parts of the door handle will be at different levels on the inside and outside. A Split spindle is made of 2 parts that meet inside the gearbox. The levers / moving parts of the door handle will be at the same level. A Single spindle is one long part which goes right through the door. The levers / moving parts of the door handle will be at the same level. To distinguish between a split and single spindle you will need to remove them from the door and look.

No, as you do not necessarily need to change the barrel when changing the gearbox so the gearbox is sold on its own own. If you need a new cylinder, please click here.

We try to put these guides on each gearbox page. If its not there please call us on 01204 652211 and we’ll find the instructions for you.

Unfortunately not all gearboxes can be purchased separately. Contact us if you can’t see your gearbox on our website and we can tell you if its available or not.

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Additional Information

Backset 35mm
Backset 45mm
Handle to Cylinder Size:
Locking Points:
1 Deadbolt, 1 Latch
Delivered for just £3.18
Split Spindle
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32 Reviews

  • 5
    Lock replacement

    Posted by Pete Griffiths on Feb 12, 2021

    This was the only company that appeared to provide the exact part that I needed. Excellent service, easy to order & fast delivery.

  • 5
    Lock gearbox

    Posted by Colin hilton on Jan 31, 2021

    Good quality excellent service

  • 5
    Excellent Product and Service

    Posted by R Meredith on Jan 18, 2021

    Very good prompt serviceability product

  • 5
    replacement 3 point lock system

    Posted by Brian Childs on Jan 01, 2021

    Superb, Delivered next day just before Christmas, great price - highly recommended!

  • 5
    Door lock replacement

    Posted by Lorrae Alexander on Oct 16, 2020

    We were told by a very large company that this product was no longer available, so very surprised to find it on you web site and it fits perfectly . Delivery was excellent. Thank You.

  • 5
    Era Saracen lockbody

    Posted by Phil Webb on Oct 11, 2020

    I must thank you for your excellent service regarding the above purchase Ordered Thursday night arrived Monday morning fitted Monday dinner time Brilliant Thank You

  • 5
    Era saracen surelock

    Posted by David Taylor on Oct 02, 2020

    Excellent service from this company with very good advice and assistance from Jackie.

  • 5
    spot on

    Posted by alan chadwick on May 20, 2020

    brilliant service from start to finish all done and sorted within 6 hours thanks to all concerned recommended

  • 5
    ERA surelock replacement gearbox

    Posted by Duncan on Apr 01, 2020

    Came as promised, really easy to fit, feels so much better than worn out one it replaced

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