The CTA Tools 7026 Master Cylinder Brake Bleeder Adapter is engineered to be compatible with older BMW and Audi models that use a 57mm threaded-cap brake reservoir design. Built with a 44.2mm internal diameter and a 57mm outer diameter, this adapter delivers a secure, leak-free seal when pressure bleeding brake systems.

A professional-grade 1/2" Nitto fitting with 1/8" BSP threads ensures fast and reliable attachment to most shop pressure bleeders, making this adapter suitable for repeated use in professional repair environments. The 7026 is also included in the CTA 7300 11-Piece Master Cylinder Adapter Kit, offering added value and versatility for technicians servicing multiple vehicle platforms.

Because this adapter was originally designed for legacy European applications, it's compatible with many pre-2000 BMW and Audi models that used varying reservoir cap styles during that era. For most newer European vehicles, the CTA 7029 is recommended due to the industry-wide shift toward standardized master cylinder reservoir sizes.

With precise sizing and heavy-duty construction, the CTA 7026 provides dependable performance for older European brake systems requiring a threaded-cap style adapter.