Denso Common Rail Inner Coil Shim

Denso CR Inner Coil Shim - 077-114

The Denso common rail (CR) inner coil shim is a critical adjustment component used in Denso brand common rail diesel injectors, operating with precision under high pressure and contributing to stable injection pressure. It ensures accurate control of the fuel quantity injected by the injector during the cranking phase, allowing for stable engine operation at startup, optimized fuel consumption, and reduced exhaust emissions. This component directly affects the starting fuel flow and plays a decisive role in low-speed engine performance. To meet technical requirements such as high surface quality, wear resistance, and measurement precision, it is manufactured within tight tolerances using a high-precision lapping process.