Yinlowa Ignition Lock Assembly 1K0905851B for VW — Direct-fit with Matched Mechanical Key and Starter Switch

Yinlowa 1K0905851B is a full ignition lock assembly that replaces a worn or failing VW ignition cylinder and comes with a keyed key for mechanical fitment.

If your VW or related vehicle has a key that sticks, won’t turn smoothly, or fails to engage the starter, this replacement ignition lock assembly restores the physical lock, steering housing and electrical starter switch in one unit. Designed as a direct-fit spare for a range of Volkswagen, Audi, Seat and Skoda models, it includes the housing, cylinder, electrical starter switch and a matching mechanical key so you have the core parts needed to address common ignition faults.

Which vehicles and original part numbers does this replace?

This Yinlowa assembly fits a range of VW Group models from the mid-2000s to early 2010s and replaces multiple OEM references. Always compare your vehicle’s original housing and connector to ensure compatibility before ordering.

• Compatible with VW Jetta MK5 (2005–2011), Golf (2004–2011), Eos (2006–2011), Rabbit (2006–2009), Tiguan (2008–2011).
• Also fits Audi A3 (2003–2013), TT (2007–2010), R8 (2007–2013) and select Seat and Skoda models.
• Replaces part references such as 1K0905851B and related starter switch numbers (1K0905865, 5Q0905865A, 1K0905841, 1K0905849A/B, 1K0905865A/B).
• Not compatible with push-button start systems; verify the physical housing and electrical connector before purchase.

What comes in the box and what should I check before installing?

The package contains a complete ignition lock assembly and a mechanical key matched to the new cylinder. Confirm the contents and inspect connectors and mounting points to avoid installation delays.

• Included: steering lock housing, lock cylinder, ignition starter switch, and one mechanically matched key.
• Inspect: housing shape, electrical connector type, mounting holes, and key operation before fitting.
• Note: remote keyless functions are not paired and immobilizer programming may be required for engine start.

Do I need programming or professional help after installation?

Because the supplied key is keyed to the new cylinder but not paired electronically, many vehicles require immobilizer programming so the car recognizes the key. Professional installation is recommended unless you have experience with VW Group electrical systems.

• Mechanical match: key turns the new cylinder as supplied.
• Electrical: immobilizer reprogramming may be necessary for engine start and security features.
• Recommendation: have a qualified technician perform fitting and key coding to ensure full functionality.

What are the construction and warranty details?

The assembly uses durable materials and electrical contacts intended to restore reliable mechanical rotation and starter engagement. Yinlowa backs this product with a one-year limited warranty against manufacturing defects.

• Materials: zinc-alloy housing and copper electrical contacts for smooth operation and good conductivity.
• Performance: designed to address sticking keys, incomplete turns, and inconsistent starter engagement.
• Warranty: one-year limited warranty covering defects in materials and workmanship; check package for warranty terms.

Who is this for: This Yinlowa 1K0905851B ignition lock assembly is intended for owners or mechanics repairing VW Group vehicles from the 2000s–2010s that still use a keyed ignition (not push-button start). It’s a practical choice if the existing cylinder is worn, the key sticks or the starter switch electrical contacts are unreliable. If you need remote pairing or complete electronic key duplication, plan for additional programming or dealer/key specialist services.