IHI 129137-18010 Turbocharger Assembly RHB31

The IHI RHB31 (model CY62) turbocharger assembly carries part number 129137-18010 and serves as original equipment for Komatsu compact wheel loaders utilizing Yanmar 3TN84 series diesel engines. The unit features a wastegated turbine housing constructed from nodular cast iron with pneumatic actuator control for boost pressure regulation. Bearing system is oil-cooled and oil-lubricated via engine lubrication circuit. Compressor cover is aluminum alloy. Designed for direct replacement on Komatsu WA40-2 WA40-3 WA50-3 models powered by Yanmar 3TN84TL-R2B S3D84E-3 S3D84-2 engines. Cross-reference interchange includes IHI CY62 Yanmar YM129137-18010 and aftermarket numbers VC110033 VB110033 VA110033 SDT129137-18010N. Unit weight approximately 2.8 kilograms. Verify nameplate data prior to installation to confirm correct model variant match.