Komatsu WA420 Service Kits
Komatsu WA420 Service Kits is a supported WQC Parts hub because it already connects buyers to real product paths. Use this page to narrow from the broad Komatsu model or system into listed products, serial-aware collections, or specific component groups.
For the best result, start with the exact model and serial number, then choose the closest series, workgroup, product group, or part number shown below. Do not rely on description alone when a serial break, attachment arrangement, arm length, bucket linkage, or hydraulic configuration may change the correct part.
Use the Listed Product Links Below
The product links below are intended for buyers who already know the part number or can confirm the application. If fitment is uncertain, contact WQC Parts before ordering.
Before Ordering: Confirm the Machine and Serial Range
WA420 Service Kits parts can change by series, serial number break, regional arrangement, attachment package, and installed component group. Use this hub to narrow the path, but confirm the final part number against the machine serial number, parts book reference, or existing part stamping before ordering.
- Best information to provide: machine model, serial number, current part number, component location, and a photo if available.
- For pins, bushings, service kits, pumps, hydraulic parts, and engine components, similar descriptions may still represent different parts.
- When you are unsure, use the quote path instead of guessing from a broad description.
Need help confirming a Komatsu part? Contact WQC Parts
Komatsu WA420 Service Kits are a focused subset of Komatsu parts used in hydraulic and mechanical repair work on Komatsu wheel loaders. This machine-family hub helps customers research part numbers, identify stocked service kits, and request additional Komatsu service kits when needed.
Common WA420 Model Variants
- WA420-1
- WA420-3
- WA420-3CS
- WA420-3L
- WA420-3MC
- WA420-DZ-3 SERIAL NO.10001 AND UP
Common Service Kit Applications
- Service Kit,Treadle Valve, Spring
- Service Kit,Treadle Valve
- Service Kit,Governor
- Service Kit,Check Valve (For 281-34-11511)
- Service Kit,Check Valve (For 281-34-12300)
- Service Kit,Check Valve (For 421-35-14350)
- Service Kit,Steering Valve
- Service Kit,Final Drive
- Service Kit,Wheel Brake
- Service Kit,Air Dryer (For 421-35-16200)
- Service Kit,Stop Valve
- Service Kit,Steering Demand Valve
Service Kits We Stock
- Komatsu 238-44-05010 Brake Valve A Service Kit
- Komatsu 238-44-05030 Brake Valve B Service Kit
- Komatsu 281-34-05110 Air Governor Service Kit
- Komatsu 281-34-05220 Treadle Check Valve Service Kit
- Komatsu 416-15-05130 Transmission Filter Service Kit
- Komatsu 424-35-05110 Brake Chamber Service Kit
- Komatsu 421-22-05020 Final Drive Service Kit
- Komatsu 424-15-05121 Transmission Service Kit
- Komatsu 707-99-24510 Steering Cylinder Service Kit
- Komatsu 707-99-24610 Steering Cylinder Service Kit
- Komatsu 707-99-43530 Service Kit
- Komatsu 711-50-05010 Torque Converter Service Kit
- Komatsu 711-50-05011 Torque Converter Service Kit
- Komatsu 707-99-73140 Service Kit
- Komatsu 714-07-05010 Transmission Service Kit
- Komatsu 714-07-05061 Trans Control Valve Service Kit
- Komatsu 714-07-05052 Trans Control Valve Service Kit
- Komatsu 714-07-05100 Transmission Piping Service Kit
- Komatsu 714-07-05102 Transmission Piping Service Kit
- Komatsu 707-99-64130 Lift Cylinder Service Kit
- Komatsu 707-99-64030 Lift Cylinder Service Kit
Additional Komatsu Service Kit Part Numbers Available by Request
- 281-34-05211
- 416-64-15500
- 421-33-05012
- 421-35-16360
- 421-64-05100
- 421-64-05110
- 423-15-05130
- 423-15-05131
- 423-15-05133
- 423-15-05134
- 423-15-05135
- 423-15-05137
- 423-35-15110
- 424-15-05110
- 424-15-05111
- 424-15-05113
- 424-15-05114
- 424-15-05115
- 424-15-05116
- 424-15-05117
- 424-15-05119
- 424-15-05120
- 424-15-05122
- 424-15-05123
- 424-22-05010
- 424-35-05112
- 424-35-05120
- 707-99-73020
- 711-50-05012
- 425-64-21130
- 714-07-05060
- 714-07-05012
- 714-07-05064
- 714-07-05101
- STBA0271A
- 6742-01-0550
- 6736-21-4220
Return to Komatsu Wheel Loader Service Kits or the Komatsu Service Kits master hub.