Home / Standards / GB/T 6791-2025 GB/T 6791-2025 Active Road vehicles—Spark-plugs and their cylinder head housings—Basic characteristics and dimensions 道路车辆 火花塞及其气缸盖安装孔 基本特征及尺寸 Standard Type GBT ICS 43.060 CCS T37 Status 现行 Issue Date 2025-10-31 Implementation 2026-05-01 Responsible Dept 工业和信息化部 Drafting Unit N/A