Products Description
MS070 Chainsaw Crankcase Gasket – Cylinder Base Seal & Gasket Sets
Precision Sealing Components for STIHL 070, 090 & MS720 Professional Saws
The crankcase gasket (cylinder base gasket) forms a critical seal between the cylinder and the crankcase on STIHL 070, 090, MS070, MS090, and MS720 professional chainsaws. This gasket maintains crankcase compression, essential for the 2-stroke engine's scavenging process, and prevents air leaks that can cause lean running conditions and engine seizure. Available as individual cylinder base gaskets or as complete gasket sets that include all necessary seals and gaskets for a full engine overhaul. OEM part number 1106 029 2300 is the factory specification for the 070's 58mm cylinder base gasket.
Technical Profiles & Materials
Cylinder Base Gasket Specification – The cylinder base gasket for the MS070/090 platform uses OEM part number 1106 029 2300 for the 58mm cylinder. The 090's 66mm cylinder uses a different gasket (1106 029 2311).
Complete Gasket Set Availability – A comprehensive gasket and seal set is available under OEM number 1106 007 1050, which includes all gaskets, seals, and necessary sealing components for a full engine overhaul. This set is confirmed to fit the 070 platform.
Crankshaft Seals – OEM crankshaft seals are available under part number 9640 003 1980 for the 070 and 090 engine platforms.
Comprehensive Cylinder Kits – Complete aftermarket cylinder kits are available that include the 58mm cylinder, piston, rings, gasket kit, spark plug, crankshaft bearings, and piston needle cage – ideal for complete engine rebuilds.
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | Cylinder Gasket OEM (58mm) | 1106 029 2300 |
| 2 | Complete Gasket Set OEM | 1106 007 1050 |
| 3 | Crankshaft Seal OEM | 9640 003 1980 |
| 4 | Compatible Models | STIHL 070, 090, MS070, MS090, MS720 |
| 5 | Engine Displacement (070) | 105 cc |
| 6 | Cylinder Bore (070) | 58 mm |
| 7 | Cylinder Gasket (090) | 1106 029 2311 (66mm bore) |
| 8 | Gasket Set Contents | All crankcase gaskets + oil seals |
Products Application
Full Engine Overhaul & Restoration
The complete gasket set (1106 007 1050) provides all necessary gaskets and seals for a full engine rebuild on 070 and 090 saws. Users confirm this set includes seals and all gaskets, with the only component not included being the insulating buffer between the cases.
Cylinder Base Seal Replacement
The cylinder base gasket (1106 029 2300) is a specific component for the 58mm cylinder on 070 saws. Replacement is necessary during any cylinder removal or when the existing gasket is damaged. For the larger 66mm 090 cylinder, use gasket 1106 029 2311.
Professional Chainsaw Restoration
For collectors and professionals restoring classic STIHL 070 and 090 saws, both individual gaskets and complete sets are available. The complete gasket set reportedly costs approximately $38.00 and provides significant cost savings compared to purchasing seals and gaskets individually.
Quality and Craftsmanship Details
Products Package
About Us
As a premier garden machinery parts supplier, Jiaxing Norsun Trading Co., Ltd. bridges global distributors with over 100 vetted China manufacturers. We streamline your B2B supply chain through strict quality control, flexible production, and factory-direct wholesale pricing. Partner with us for reliable, high-volume sourcing of precision-engineered outdoor power equipment components.
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FAQ
Q: How do I confirm which gasket fits my MS070?
A:Check your chainsaw model number and cylinder bore size. The 58mm cylinder gasket for MS070 uses OEM number 1106 029 2300. For the larger 66mm 090, use gasket 1106 029 2311. The complete gasket set (1106 007 1050) fits both 070 and 090 models.
Q: What is included in the complete gasket set?
A: The complete gasket and seal set (1106 007 1050) includes all crankcase gaskets, oil seals, and necessary sealing components for a full engine overhaul. The only component not included is the insulating buffer between the crankcase halves. Crankshaft seals are available separately under OEM 9640 003 1980.
Q: Are aftermarket gasket sets available?
A: Yes, quality aftermarket gasket sets are available from multiple suppliers, including complete sets (1106 007 1050) that offer a cost-effective alternative to genuine OEM parts. Aftermarket suppliers typically offer 12-month warranty coverage on most products. Comprehensive cylinder kits are also available that include gaskets, bearings, spark plug, and piston needle cage for a complete rebuild.
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