STIHL Crankcase for 064 & MS 640 Chainsaws - 1122 020 2101

The STIHL Crankcase for 064 and MS 640 chainsaws is a genuine replacement engine housing designed to support, protect and align the internal engine components of compatible STIHL professional chainsaws. Manufactured to STIHL original equipment standards, this crankcase helps maintain the correct structure around key engine assemblies, supporting reliable operation, durability and long-term machine performance.

Designed specifically for the STIHL 064 and MS 640 chainsaws, this crankcase provides a precise OEM fit for rebuilds, major servicing and engine repair work. As the central engine housing, it plays an important role in protecting internal components, maintaining correct alignment and helping the chainsaw operate smoothly under demanding forestry, firewood, milling, estate and professional cutting conditions. Available from Gustharts with fast UK delivery options for genuine STIHL spare parts.

Key Features

• Genuine STIHL crankcase for assured compatibility and reliability
• Manufacturer Part Number: 1122 020 2101
• Designed for STIHL 064 and MS 640 professional chainsaws
• Acts as the main engine housing for compatible chainsaw components
• Helps protect internal engine parts from damage and misalignment
• Supports correct engine structure during rebuilds and major repairs
• Durable construction for demanding professional chainsaw use
• Precision-made for accurate fitment to OEM specifications
• Suitable for workshop repairs, engine rebuilds and professional servicing
• Helps maintain smooth running, reliability and long-term machine performance

Typical Applications

This STIHL crankcase is used during major chainsaw repairs, rebuilds and servicing where the original engine housing is damaged, worn, cracked or no longer suitable for reliable operation. It is suitable for professional forestry, arboriculture, estate management, firewood processing and heavy-duty cutting applications using STIHL 064 and MS 640 chainsaws.

Technical Specification

Fits Models

• STIHL 064
• STIHL MS 640
• STIHL MS640

Also Known As

• STIHL chainsaw crankcase
• STIHL engine housing
• STIHL crank housing
• STIHL engine casing
• STIHL crankcase housing
• STIHL 064 crankcase
• STIHL MS 640 crankcase
• STIHL chainsaw engine case

Why Choose Genuine STIHL Engine Housings?

The crankcase is a structural engine component, so accurate fit and alignment are critical during a chainsaw rebuild. Choosing a genuine STIHL crankcase helps ensure the correct OEM dimensions and mounting points for the 064 and MS 640, reducing the risk of poor alignment, unreliable sealing or premature wear from unsuitable aftermarket housings.

Explore More

• STIHL Spare Parts
• Chainsaw Accessories
• Guide Bar & Chain Selector
• Guide Bars
• Chains

FAQs

Is this a genuine STIHL crankcase?

Yes, this is a genuine STIHL replacement crankcase manufactured to original equipment standards.

What is the part number for this STIHL crankcase?

The manufacturer part number is 1122 020 2101. It may also be listed as 1122-020-2101 or 11220202101.

Which STIHL chainsaws does this crankcase fit?

This crankcase fits STIHL 064 and MS 640 chainsaws.

What does a chainsaw crankcase do?

The crankcase houses, supports and protects key internal engine components, helping maintain correct alignment and reliable running.

When should a crankcase be replaced?

Replace the crankcase if it is cracked, damaged, distorted, worn or unsuitable for a reliable engine rebuild.

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