Reparatur-Bohrlehre für Auspuff-Stehbolzen – Porsche 911 resulting in more precise steering

resulting in more precise steering response and a more stable front end

Suitable for naturally aspirated

Made from high-quality felt material

Replacing them restores proper sealing and protection

Reparatur-Bohrlehre für Auspuff-Stehbolzen – Porsche 911 resulting in more precise steeringRepair broken exhaust studs precisely and safely without removing the cylinder head. The drilling jig is attached to the exhaust port, ensuring that you drill out the old stud precisely in the center. A must have for every 911 workshop. Scope of delivery: Left hand drill bits, taps, drill guides, bushings, and case. Suitable for all air cooled 911 cylinder heads (incl. 993).