Komatsu WA380-3 Brake Pipin, Rear Axle — Brake Valve Parts
Komatsu WA380-3 brake pipin, rear axle — brake valve parts for machine serial H20051-H20500. View this configuration's diagram, part numbers, quantities and options; shop or request a quote.
Catalog configuration: 09 Brake System / Brake Pipin, Rear Axle / Brake Valve.
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Aftermarket parts reference illustration · Click to enlarge. Actual supplied parts may differ.
Assembly parts
Showing all 31 part occurrences
Select any parts and adjust quantities. Store products go to your cart; parts without a store match go into a quote request. Each button handles only its matching selections.
| Line | Part number | Description | Qty | Order qty | Purchase options | |
|---|---|---|---|---|---|---|
| 1 | BRAKE VALVESN: 20338 | 1 | Request quote | |||
| 2 | PISTON | 1 | Request quote | |||
| 3 | TOOTH WASHER | 1 | Request quote | |||
| 4 | SLEEVE | 1 | Request quote | |||
| 5 | CIRCLIP | 1 | Request quote | |||
| 6 | RING | 1 | View product ↗ | |||
| 7 | O-RING | 1 | Request quote | |||
| 8 | SPRING | 1 | Request quote | |||
| 9 | SPRING | 1 | Request quote | |||
| 10 | SPRING | 1 | Request quote | |||
| 11 | BUSHING | 1 | Request quote | |||
| 13 | TOOTH WASHER | 1 | Request quote | |||
| 14 | CIRCLIP | 1 | Request quote | |||
| 15 | BUSHING | 1 | Request quote | |||
| 16 | SPRING | 1 | Request quote | |||
| 17 | O-RING | 1 | View product ↗ | |||
| 18 | PLATE | 1 | Request quote | |||
| 19 | SCREW | 4 | Request quote | |||
| 20 | SCREW | 4 | Request quote | |||
| 21 | BEARING | 1 | Request quote | |||
| 22 | BUFFER | 1 | Request quote | |||
| 23 | BUFFER | 1 | View product ↗ | |||
| 24 | PEDAL | 1 | Request quote | |||
| 25 | RUBBER | 1 | Request quote | |||
| 26 | ROLLER | 1 | Request quote | |||
| 27 | BUSHING | 2 | Request quote | |||
| 28 | PIN | 2 | Request quote | |||
| 29 | SAFETY CATCH | 2 | Request quote | |||
| 30 | HAIR PIN | 2 | Request quote | |||
| 31 | NUT | 1 | Request quote | |||
| 32 | SCREW | 1 | Request quote |
Repeated parts remain separate. Source order is retained; diagram callout mapping has not yet been verified.
Assembly notes
HOUSING
HOUSING
Using Komatsu WA380-3 Brake Pipin, Rear Axle — Brake Valve Parts
Use the Komatsu WA380-3 Brake Pipin, Rear Axle — Brake Valve Parts listing to identify aftermarket replacement parts within the 09 brake system section. This wheel loader application is listed for machine serial H20051-H20500; the diagram and parts table retain the selected configuration and its source notes.
The parts table contains 31 listed part occurrences, including brake valve (reference 421-43-27100), piston (reference 421-43-27370) and tooth washer (reference 421-43-27350). Read any option and reference notes beside these entries before choosing a replacement; repeated references may represent separate positions in the source list.
For axle, driveline and brake-related parts, follow the assembly location and machine serial applicability. Keep front/rear and left/right distinctions, along with any equipment options recorded in the parts list.
Catalog quantities describe the illustrated assembly. Adjust the order quantity to what you need, select the relevant rows, and use Add selected to cart for verified store matches or Add selected to quote for quote items. The diagram alone does not establish current stock or part interchangeability.