Description
Overview:
The Main Bearing 6002 is a genuine Stihl OEM crankshaft bearing for selected two-stroke engines, including the MS 171 and MS 180 chainsaws. It supports the crankshaft, reduces friction, and keeps the engine running smoothly at high RPM. Built from hardened steel with precision-ground raceways, it is designed to withstand the heat, load, and vibration found in regular cutting work. As a standard 6002 deep groove ball bearing, it has typical dimensions of 15 mm inner diameter, 32 mm outer diameter, and 9 mm width, making it a precise, like-for-like replacement in compatible machines. Supplied under MPN 9503 003 0312, this genuine part helps maintain performance, reliability, and service life in both chainsaws and selected brushcutters.
Key Features:
- Genuine Stihl OEM part (MPN 9503 003 0312) for assured fit and compatibility
- Standard 6002 sizing: 15 mm ID x 32 mm OD x 9 mm width for straightforward replacement
- Hardened steel construction for durability under high load and high RPM
- Precision-ground raceways for smooth running and reduced vibration
- Helps maintain crankshaft alignment to protect seals and improve engine life
- Reliable performance when used in the crankcase environment of two-stroke engines
- Direct replacement in specified models; no modifications required
- Suitable for routine overhauls and preventative maintenance
Typical Applications:
Used during engine rebuilds or routine servicing to replace worn crankshaft main bearings in Stihl chainsaws and brushcutters. Ideal when addressing crankshaft play, rumbling noises, harsh running, or poor starting. Suitable for professional users and homeowners who want to restore smooth operation and protect the engine from premature wear.
Also known as:
Chainsaw main bearing, crankshaft bearing 6002, deep groove ball bearing 6002, engine main bearing, 15x32x9 bearing, Stihl crank bearing, replacement crank bearing for two-stroke engines.
Fits Models:
MS 162, MS 162 C, MS 170, MS 170 C, MS 171, MS 171 C, MS 172, MS 172 C, MS 180, MS 180 C, MS 181, MS 181 C, MS 182, MS 182 C, FS 230, FR 230, FR 230 T
Alternate Part Numbers:
9503-003-0312, 95030030312
Product Specifications
| L&S Part No. | 9503 003 0312 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 95030030312 |
| Unit of Sale | 1 |
| Size | 6002 |
| Applications | FR 230, FR 230 T, FR230, FR230T, FS 230, FS230, MS 170, MS 170 C, MS 171, MS 171 C, MS 172, MS 172 C, MS 180, MS 180 C, MS 181, MS 181 C, MS 182, MS 182 C, MS162 / MS162C, MS170, MS170C, MS171, MS171C, MS172, MS172 / MS172C, MS172C, MS180, MS180C, MS181, MS181C, MS182, MS182 / MS182C, MS182C |
| Fits Brands | Stihl |
| Fits Models | MS170, MS170C | MS180, MS180C | MS171, MS171C | MS181, MS181C | FR230, FR230T | FS230 | MS162 / MS162C | MS172 / MS172C | MS182 / MS182C | MS212 / MS212C |
Reviews
Ask a Question
Compatibility
Customers also bought
Related Products
-
![]()
19mm Steel Banding/Pallet Strapping 333m Per Roll£82.20 £68.50
