Pushrod Tube Seal Outer Porsche 914 1.7 411/412

Outer seal at the cylinder head end for 1.7 Type 4 engine with early small diameter pushrod tubes. Early 1.7 cylinder heads used a smaller 23.5mm diameter on the outer end of the pushrod tube, these are the seals for these early engines. In the detail image below showing the early and late outer seals this smaller early seal is on the right. Genuine.