This particular model is intended to replace the 35mm backset double spindle version. If you're having problems with your door lock, the gearbox is almost always the problem and changing it is as simple as removing a few screws.
eBay
Car Stickers Door Sill Protector Universal Car Door Edge Sticker Anti Scratch Car Bumper Protection Film Car-Styling Accessories
Aliexpress UK
Winkhaus Door Lock Gearbox. UPVC Gear Boxes. UPVC Door Handles. UPVC Window Handle Keys. Upvc Gear Boxes. Upvc Door Handles. Upvc WIndow Handle Keys. Upvc Window Hinges.
eBay
Zinc Aolly Black Kitchen Cabinet Door Handles American style Wardrobe Cupboard Door Pulls Drawer Knobs Furniture Handle
Aliexpress UK
Compatible with Warmcore and Liniar bi-folding doors. ERA Bi-Fold Door Lock Hook Gearbox for Warmcore and Liniar Doors – 92mm PZ. 1 x ERA Bi-Fold Door Lock Hook Gearbox (35mm backset, 92mm PZ). Centre of latch to deadbolt centre: 85.5mm.
eBay
Car Door Handle Reflective Sticker Protection Sticker Door Handle Paint Surface Anti-scratch Reflective Sticker Car Accessories
Aliexpress UK
1 x Lockmaster Single Spindle Gearbox 45mm. Genuine Lockmaster Product. Finger Operated Shoot Bolts. MPL Shoot Bolts. Backset = 45mm. Window Handle Keys. Door Handles. Garage Door Handles.
eBay
Gold Black Cabinet Handles Kitchen Cupboard Door Knob and Handle Dress Drawer Knobs Wardrobe Door Handle Furniture Hardware
Aliexpress UK
Era UPVC Door Multipoint Lock Gearbox - Lift Lever Split Spindle Nightlatch Function. Latch Reversal : Undo Screws to remove latch ,turn to desired position and replace screws. Backset: 35mm(face of lock back to the centre of the keyhole).
eBay
Car Door Soundproof Anti-Dust Seal Strip Car Door Seal Strip Universal Noise Insulation Epdm Truck Car Rubber Waterproof Seals
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.
eBay
4pcs Rubber Car Door Sill Scuff Covers Black Door Panel Guards Protector Trim Anti-scratch Exterior Parts Car Decor Accessories
Aliexpress UK
Enhance your door’s security with the Fullex XL 35mm Single Spindle Door Lock Gearbox, designed specifically for Fullex XL multipoint locking systems. If your door lock is malfunctioning, the gearbox is often the root cause.
eBay
SEAMETAL Rubber Car Door Seal Strip Universal Sealing Strips Waterproof Gap Filler Soundproof Weather Strip for Door/Hood/Trunk
Aliexpress UK
Manufacturer: Yale Doormaster. 1x Yale G2000 35/92 Latch and Hookbolt gearbox with double spindle (L18760). 1x GU Old style 35/92 Latch and Deadbolt gearbox with single spindle (L18761). 1x Lockmaster 35/92 Latch and Deadbolt gearbox with dual spindle (L18756).
eBay
10pcs Car Fastener Door Lock Retainer Car Door Handle Clamp Clip Auto Replace Fastener Car Interior Accessories for VW 357837242
Aliexpress UK