Komatsu YM129900-11110 Valve Exhaust

Komatsu YM129900-11110 Valve Exhaust

Komatsu YM129900-11110 Valve Exhaust is a WQC Parts aftermarket replacement part for Komatsu heavy equipment. It is intended for hydraulic system and machine service applications where the part number, machine model, and serial range match the required application.

Shop WQC Parts for aftermarket Komatsu parts and Komatsu replacement parts by part number, including Ym129900-11110 Exhaust Valve. Order online with fitment support for Komatsu equipment applications.

Part Information

• Komatsu part number: YM129900-11110
• WQC SKU: KM-Ym129900-11110
• Product type: Exhaust Valve
• Search reference: YM129900-11110 / YM12990011110

Common machine models include: D21A, D21P, D21PL, D21Q, D21S, WA65, WA65PT, WA75, PC70FR, PC75, PC75R, PW75, PW75R, SK09J, WB70A.

Reported serial ranges include: 78604-UP, 78604-UP (TRIMMING DOZER (M/C)), 62454-UP, 61132-UP, 61132-UP (4D94E-1 (EMISSION) ENG. INSTALLED), HA940051 - HA940548, HA940549 - HA940771, HA050051 - HA050074.

Reported category/application areas: BULLDOZERS, WHEEL LOADERS, EXCAVATORS, Forklifts, Backhoe Loaders, Skid Steer Loaders.

Fitment Notes

Always confirm final fitment before ordering. The same general part description can apply to different Komatsu models, serial ranges, component groups, or diagram positions. Verify the original part number, machine model, serial number, and installed arrangement before purchase.

Why Buy from WQC Parts?

• Aftermarket Komatsu replacement parts organized by part number and product type.
• Support for fitment review using machine model, serial number, and photos when needed.
• Competitive pricing for repair shops, equipment owners, and fleet maintenance teams.
• Reliable sourcing focused on reducing downtime and keeping machines working.

If you are unsure whether this part fits your machine, contact WQC Parts with your model, serial number, and existing part number before ordering.