婷婷五月天六月天|日韩成人高清视频|亚洲 中文 中出|一本国产欧美波多91东京热

crankcase vent line

Applied to the engine intake pipe with the connection between the crankcase has good heat insulation effect, under the environment of high temperature will not deformation, can automatically detect vent and engine intake pipe or crankcase joint leak phenomenon, effectively prevent the air pollution.