Bosch Fuel Injector O-Ring Seal Kit VW TDI 1.9L4 1417010997 038198051B. 
Fuel Injector O-Ring Kit for Bosch. This kit is designed for use in various Volkswagen diesel models and includes all necessary components to replace worn-out O-rings in the fuel injectors. Replacing these O-rings is essential for maintaining proper sealing, preventing fuel leaks, and ensuring optimal engine performance. The kit is compatible with several Volkswagen models, including:
2004-2006 Volkswagen Golf GLS TDI 1.9L4 DIESEL
2004-2006 Volkswagen Jetta TDI 1.9L4 DIESEL
2004-2006 Volkswagen Beetle TDI 1.9L4 DIESEL
2004-2005 Volkswagen Passat GLS TDI 2.0L4 DIESEL
2004-2007 Volkswagen Touareg TDI 5.0V10 DIESEL
OEM Part Numbers: 1417010997 038198051B