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STIHL 4313 680 3901 Auger Adapter - 7/8" Square Drive
The STIHL 4313 680 3901 Auger Adapter is designed to add versatility to compatible STIHL earth augers. This adapter features a 7/8" square drive and is used to help connect compatible non-standard auger bits to select STIHL BT series earth augers.
This adapter is commonly used with select STIHL BT 120, BT 121, BT 130, and BT 131 earth augers. It is designed for use with compatible auger bits, including bits with a 1" square drive, where the adapter and machine setup match the required drilling application.
This part is commonly searched as STIHL 4313 680 3901, STIHL 43136803901, STIHL auger adapter, STIHL BT 121 adapter, STIHL BT 130 auger adapter, 7/8 square drive auger adapter, or STIHL earth auger bit adapter.
Product Details
| Brand | STIHL |
|---|---|
| Part Number | 4313 680 3901 |
| Compact Part Number | 43136803901 |
| Product Type | Earth Auger Adapter |
| Square Drive | 7/8" |
| Bit Compatibility | Compatible with select auger bits, including 1" square drive bits where applicable |
| Common Equipment | Select STIHL BT 120, BT 121, BT 130, and BT 131 earth augers |
Key Features
- Genuine STIHL auger adapter
- Part number 4313 680 3901
- Also searched as 43136803901
- 7/8" square drive adapter
- Helps adapt compatible non-standard auger bits
- Works with select auger bits with a 1" square drive where specified
- Designed for select STIHL BT series earth augers
- Durable construction for drilling applications
- Easy to attach and remove from compatible earth augers
- Adds flexibility for drilling in various soil types and conditions
Fits Select STIHL Earth Augers
This adapter is listed for select STIHL BT series earth auger applications. Always verify your exact auger model, adapter drive size, bit drive size, and parts diagram before ordering.
- BT 120
- BT 121
- BT 130
- BT 131
Common Applications
- Adapting compatible auger bits to STIHL BT earth augers
- Fence post hole drilling
- Landscape and property maintenance drilling
- Tree and shrub planting holes
- General soil drilling applications
- Using compatible non-standard auger bits with STIHL earth augers
Important Fitment Notes
- This listing is for STIHL part number 4313 680 3901
- Adapter drive listed: 7/8" square drive
- Verify your auger accepts this adapter before ordering
- Confirm the auger bit drive size, adapter size, and earth auger model match your setup
- Do not order by earth auger model alone because bit and adapter requirements can vary
- Auger bits, pins, clips, hardware, and other accessories are not included unless shown or stated
- Use only compatible auger bits approved for your machine and drilling application
Use and Safety Notes
Earth auger use can be hazardous if the machine, adapter, or auger bit is used incorrectly. Always read, understand, and follow the STIHL instruction manual for your exact earth auger before use.
- Shut the engine off before installing or removing the adapter
- Make sure the adapter and auger bit are fully seated and secured before drilling
- Inspect the adapter, auger bit, drive connection, pins, and retaining hardware before each use
- Do not use damaged, bent, cracked, or excessively worn adapter components
- Call before digging and check for underground utilities before drilling
- Use proper personal protective equipment
- Follow all STIHL instructions for operation, transport, maintenance, and drilling technique
Part Number / Search Terms
- STIHL 4313 680 3901
- STIHL 43136803901
- 4313 680 3901 auger adapter
- STIHL auger adapter
- STIHL earth auger adapter
- STIHL 7/8 square drive adapter
- 7/8 square drive auger adapter
- STIHL 1 inch square drive auger bit adapter
- STIHL BT 120 adapter
- STIHL BT 121 adapter
- STIHL BT 130 adapter
- STIHL BT 131 adapter
- STIHL BT 121 auger bit adapter
- STIHL BT 130 auger bit adapter
- STIHL earth auger bit adapter
- OEM STIHL auger accessories
Frequently Asked Questions
What is STIHL 4313 680 3901?
STIHL 4313 680 3901 is an auger adapter with a 7/8" square drive for select STIHL BT series earth augers.
What STIHL augers does this adapter fit?
The supplied fitment information lists BT 120, BT 121, BT 130, and BT 131 earth augers. Always verify your exact model and drive setup before ordering.
What drive size is this adapter?
This adapter is listed with a 7/8" square drive.
Can this be used with 1" square drive auger bits?
The supplied product information states it is compatible with select auger bits with a 1" square drive. Confirm both the adapter and bit dimensions before ordering.
Are auger bits included?
No. This listing is for the adapter only unless auger bits are specifically shown or stated as included.
Can I order this by auger model alone?
No. Always verify the earth auger model, adapter drive size, auger bit drive size, and retaining hardware before ordering.
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