Fits all Porsche magnesium case 901/911 69-71 and 914 70-76  transmissions

• Precision machined from 4130 Chromoly

• Better supports both main and pinion shaft bearings

• Improved design captures the main shaft bearing 45% more than OEM

• Substantial clearance provided for even non-standard tall 1st gear ratios

• Perfect fit for bearings and assembly

• Much stronger than the original cast part

• Note:  Deletes shim underneath original retainer if applicable

• Replaces part 901.301.035.13

Aluminum case transmissions from 65-68 will need the Early 901 version, replaces factory part 901.301.251.01