Powerflex Rear Upper Link Inner Bushes - Porsche 996/997 - Set of 4

Four replacement rear upper link inner bush assemblies for the specified Porsche 996/997 application. PFR57-1509 fits 19.5 mm wide arms; PFR57-509 is the 22 mm option. The PFR57-509 family also serves the supported outer mounting described below.Choose the width and exact reference Arm width Road Series Black Series Pack quantity 19.5 mm PFR57-1509 PFR57-1509BLK 4 bushes 22 mm PFR57-509 PFR57-509BLK 4 bushes Measure the arm at the bush. These widths do not describe the bolt diameter, and different references must not be selected by appearance alone.Important 997 inner and outer mounting distinctionFor the specified 22 mm early-997 arrangement without outside hub support, Powerflex calls for four PFR57-508 outer bushes plus four PFR57-509 inner bushes. When the hub carrier supports the bush on both sides, it specifies eight PFR57-509 bushes to service both ends.This listing supplies four, not eight. A complete eight-bush PFR57-509 installation therefore requires two of the matching four-bush packs. Do not infer that the 19.5 mm PFR57-1509 variant has the same outer application without checking the manufacturer's instructions for the installed hardware.Original references and applicationPFR57-1509 lists 99633104703. PFR57-509 lists 99733104700 / 99733104701, 99633104702 / 99633104703 and 99633104705 / 99633104706. Check original arm width and hub construction alongside the reference. This is not blanket approval for GT2/GT3 or aftermarket arms.Plan the complete arm refreshFor the separately specified outer design, compare our PFR57-1508 / PFR57-508 outer bush sets. Complete link arms are not included. Use the fitting instructions and have the alignment checked after installation.Explore the Powerflex suspension range. Confirm the existing parts before purchase; there is no blanket fitment guarantee.