Maintenance set injection valves for Porsche 928 S

Maintenance set for injection valves for Porsche 928 (1983-1986 with L or LH Jetronic).

The set consists of:
8x external valve bearing (311 133 263 / 311133263)
8x inner valve bearing (311 133 261 A / 311133261A)
8x locking ring (900 041 012 01 / 90004101201)
8x hose clamps

These are not original parts but aftermarket products of the best quality.