Stihl 3689-005-0068 OEM Chainsaw Chain (18")

Genuine Stihl OEM replacement chain for the Stihl MS 250 and MS 251. This is the factory-correct Rapid Micro 3 (26RM3) chain — not aftermarket — sold by P&P Small Engines, your trusted source for OEM small-engine parts.

Product Overview

• Brand: Stihl (OEM)

• Stihl Part Number: 3689-005-0068

• Chain Model: 26RM3 (Rapid Micro 3)

• Bar Length: 18 inch

• Pitch: .325"

• Gauge: .063"

• Drive Links: 68

• Cutter Type: Rapid Micro (semi-chisel)

• Condition: New OEM

This is the exact chain specified by Stihl for MS 250 and MS 251 saws equipped with an 18" bar using .325 pitch and .063 gauge.

Verify Fitment in 30 Seconds

Before ordering, confirm the following specifications on your guide bar or current chain:

• Bar Length: 18"

• Pitch: .325"

• Gauge: .063"

• Drive Links: 68

These details are usually stamped directly on the guide bar or listed in your owner’s manual.

Not sure? Contact P&P Small Engines and we’ll help confirm fitment before you order.

Fits These Stihl Models

This OEM Stihl chain fits the following models when equipped with an 18" bar using .325 pitch and .063 gauge:

• Stihl MS 250

• Stihl MS 251

If your saw uses a different bar length, pitch, or gauge, a different chain will be required.

Product Specifications

• Brand: Stihl (OEM)

• OEM Part Number: 3689-005-0068

• Chain Type: Rapid Micro 3 (26RM3)

• Cutter Style: Semi-chisel

• Pitch: .325"

• Gauge: .063"

• Drive Links: 68

• Recommended Use: Firewood cutting, property maintenance, general-purpose cutting

Why Choose an OEM Stihl Chain?

• ✅ Built to exact factory specifications

• ✅ Proper cutter geometry and metallurgy

• ✅ Smooth cutting with reduced vibration

• ✅ Designed for correct fit and safe operation

• ✅ Avoids common fitment issues found with aftermarket chains

OEM Stihl chains are engineered specifically for Stihl saws, ensuring consistent performance and long service life.

Why Buy From P&P Small Engines?

• 🔧 Small-engine experts — not a big-box seller

• 🔧 Fitment support before you buy

• 🔧 Genuine OEM parts only

• 🔧 Fast, careful shipping

We work on these machines every day and help customers get the right part the first time.

Frequently Asked Questions

Q: Will this chain fit my Stihl MS 250?
A: Yes, as long as your MS 250 is equipped with an 18" bar using .325 pitch and .063 gauge.

Q: Is this chain OEM or aftermarket?
A: This is a genuine Stihl OEM chain, part number 3689-005-0068.

Q: How do I confirm my bar gauge and pitch?
A: Check the stamp on your guide bar or consult your owner’s manual. You can also contact P&P Small Engines for help.

Common Search Terms

• Stihl 3689-005-0068 chain

• Stihl 26RM3 chain

• Stihl MS 250 18 inch chain OEM

• Stihl MS 251 OEM chain

• Stihl Rapid Micro .325 .063 chain

Questions?

If you need help confirming fitment or selecting the correct chain, contact P&P Small Engines before ordering. We’re here to help.