In most cases, door lock issues stem from the gearbox, and replacing it is as simple as removing a few screws. 45mm Backset Multipoint. Door Lock Gearbox Centre Case.
eBay
Premium Stainless Steel Door Latch Anti Theft Surface Mounted Slide Bolt Security Lock for Wooden Door Window Gate Hardware
Aliexpress UK
Fullex XL Gearbox. The gearbox is usually the part that breaks down. Then the job will be done and will be as good as new! 92mm Between Centre Of Top Handle To Centre Of Cylinder. 62mm Between Centre Of Top Handle To Cantre Of Cylinder.
eBay
Stainless Steel Invisible Door Handles Round Embedded Concealed Cabinet Knobs Sliding Door Pull Circular Pull Ring Lock Hardware
Aliexpress UK
Maco Multi Point Upvc Gear Box Lock 35mm 92mm. Single Spindle 92mm. Finger Operated Shoot Bolts. Door Handle Accessories. Multi Point Gear Boxes. Multi Point Door Locks. Window Handle Keys. Door Handles.
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Wall Mount Mailbox Post Letter Metal Postbox with Key Lock Retro Style Mail Box Letter Box for External Gate Outdoor Front Door
Aliexpress UK
Ingenious Upvc Door Lock 45mm Backset. Ingenious Upvc / Composite Door Lock. 1 x 45mm Ingenious Gear Box Lock. Finger Operated Shoot Bolts. Back Set = 45mm ( Edge Of Door TO Centre Of Barrel). MPL Shoot Bolts.
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10mm Shank 16.5-30MM Screw Thread Wooden Door Lock Slotting Cutter CNC Bottom Cleaning Router Bit Woodworking Milling Tools
Aliexpress UK
Avantis Multipoint UPVC Door Lock Gearbox 92mm 62mm Double Spindle Mechanism.
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2Pcs Antique Brass 10*3cm Door Furniture Handle Brass Lock Cabinet Drawer Cupboard he closet Pull Handle Knob Furniture Hardware
Aliexpress UK
This Maco CTS door lock is also widely used on many COMPOSITE and UPVC doors. The old gearboxes are still available but are often listed as OLD STYLE. The new CTS door lock gearbox is to suit the new full length CTS door locks only.
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Brass Replacement Mortise Rim Cylinder Door Night Latch Lock Cross Shaped Nightlatch + 6 Keys
Aliexpress UK
UPVC Gear Boxes. UPVC Door Handles. UPVC Window Handle Keys. Upvc Gear Boxes. Upvc Door Handles. Upvc WIndow Handle Keys. Genuine Lockmaster Mila Master Upvc Gearbox Door Lock 35mm Twin Spindle. Upvc Window Hinges.
eBay
Stainless steel automatic spring bolt, manual button, anti-theft wooden door, public health fitting room lock buckle accessories
Aliexpress UK
Fullex French Door Slave Lock. Fullex Xl Slave Door Lock. 1 x Fullex Slave Door Lock. Finger Operated Shoot Bolts. MPL Shoot Bolts. Door Handles. Garage Door Handles. Aluminium Door Hardware.
eBay
Washing Machine Door Lock Switch for Midea for Little Swan TG70-colorDX/VT1263ED Drum Washing Machine Repair Accessories Parts
Aliexpress UK