Repair kit for Bosch PD (Pumpe Duse VAG 2.0TDi second generation) injectors - Diesel Injection Pumps
Amazon.com : M-Wave Unisex Adult PD-DM-Gen4 e-Bike Chainring for Bosch GEN 4, for 1/2 x 3/32 & 11/128" Chains, chainline 50 mm, Narrow Wide, Steel, Black, 15 x 15 x 1 cm :
Unit injector dismantling and assembly tools Bosch 1 9 TDI - YouTube