Description
Overview:
This Pump Piston Kit is a genuine Stihl OEM replacement for the pump mechanism used in Stihl cut-off saws, including the TS 410 and TS 420. It is engineered to restore correct pump action and consistent operation when the original piston and seals have worn. The kit typically includes a precision metal piston, a steel return spring, and fuel- and oil-resistant sealing components. These parts are designed to integrate directly into the existing housing without modification, helping to maintain the performance and reliability demanded on site and in the workshop. Built for heavy-duty use in construction and landscaping, this genuine kit ensures proper sealing, smooth movement, and dependable function across regular and intensive tasks.
Key Features:
- Genuine Stihl OEM part for assured fit and compatibility
- Comprehensive kit: piston, return spring, and seals included
- Precision-machined metal piston and steel spring for durability
- Elastomer seals designed to resist fuel and oil exposure
- Restores correct pump action and stable running performance
- Helps resolve symptoms from wear such as poor priming or erratic operation
- Direct-fit design to aid straightforward installation with standard tools
- Suitable for regular maintenance schedules and in-field repairs
- Supports reliable starting and consistent performance under load
- Built to withstand site conditions common to cut-off saw use
Typical Applications:
Used during routine servicing or repair when a worn pump piston causes poor priming, inconsistent running, or difficulty keeping the machine operating smoothly. Suitable for construction, groundworks, utilities, and landscaping tasks where Stihl cut-off saws are used for cutting concrete, masonry, and metal on site. Helps return equipment to dependable day-to-day performance without replacing the complete assembly.
Also known as:
Pump plunger kit, piston and spring set, plunger repair kit, pump piston repair set, replacement pump piston, pump piston assembly, sealing kit for pump section.
Fits Models:
TS 410, TS 420, TS 440
Alternate Part Numbers:
4238-120-9700, 42381209700
Product Specifications
| L&S Part No. | 4238 120 9700 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 42381209700 |
| Unit of Sale | 1 |
| Applications | TS 410, TS 420, TS 440, TS410, TS420, TS440 |
| Machine Type | Disc Cutters |
| Fits Brands | Stihl |
| Fits Models | TS410, TS420 | TS440 |
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