top of page

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

CMS 911 Billet Bearing Retainer Plate

    bottom of page