Siemens VDO Common Rail Coil Adjustment Shim HDI

Siemens VDO CR Coil Adjustment Shim HDI - 077-109

The siemens VDO common rail (CR) coil adjustment shim HDI is one of the most commonly used critical adjustment components in Siemens brand diesel injectors, operating precisely under high pressure and contributing to maintaining stable injection pressure. By ensuring the precise control of the amount of fuel injected, it helps improve engine performance and optimize emission values. It is found as a standard component in almost all Siemens diesel injectors. This shim can only be removed from vehicles equipped with an HDi engine block. To achieve high surface quality, superior wear resistance, and high measurement precision, it is manufactured with high accuracy using a lapping process.