Length [mm]: 51; Material: Bronze; Inner Diameter [mm]: 9; Outer Diameter [mm]: 13,1; TecDoc Engine Number: 10287, 20957, 20958, 20959, 21393, 21394, 21395, 27881, 27912, 28033, 28034, 29179, 2934, 2944, 2945, 2946, 2947, 2948, 2949, 2950, 5409, 5410, 5411, 5412, 5413, 5418, 5419; Construction Year to: 08/1967; Engine Code: 901.01; Fitting Position: Exhaust Side, Inlet; Valve type: for inlet valves, for exhaust valves; PORSCHE: 911,911 (964),911 Targa,911 Cabriolet; 93010432100