Unitwist Female Coupler 15mm is a specialized automotive repair component designed for connecting or coupling fluid lines or hoses with a 15mm diameter. This part plays a crucial role in ensuring secure and leak-free connections within the vehicle’s fluid or pneumatic systems. It is most commonly found as part of repair kits tailored to certain models such as the Seat Ibiza, Leon, and Toledo 1.2 TFSI.
The female coupler is engineered to mate with corresponding male connectors to maintain system integrity during operation. When considering a replacement, it is important to verify the diameter specification—15mm in this case—to ensure compatibility with your existing line or hose. Matching these dimensions helps maintain proper function and prevents fluid loss or air ingress.
This specific coupler is listed under SKU BB-401900 and falls within the car repair kits category for select Seat models, highlighting its application within those vehicle systems. Buyers should compare this unit directly to the original coupler for visual style, connection type, and size confirmation before purchase.
- Type: Female coupler for fluid or pneumatic connections
- Size: 15mm diameter connection
- Applicable vehicles: Seat Ibiza, Leon, Toledo 1.2 TFSI (as part of repair kits)
- SKU: BB-401900
If unsure whether this coupler matches your vehicle’s requirements, consider consulting the sales desk or submitting a request for part matching.
Need help matching this item to your vehicle? Use Mercedes Benz 271 Supercharger, Vehicle Parts Finder or Request a Part with your VIN, engine number, part number or clear photos.

