Product Parameters
| Specification Item | Chain saw parts |
|---|---|
| Compatible Models | Stihl MS660, 066, 064, MS650, TS700, TS800 |
| Dimensions | 12mm (ID) × 17mm (OD) × 13mm (Width) |
| Replaces OEM No. | 9512 003 3281 / 9512 003 3283 |
| Part Type | Piston pin bearing / Connecting rod needle cage |
| Typical Price | $5 – $7 for aftermarket |
| Material | Steel needle rollers in cage |
| Application | 2-stroke chainsaw engine rebuild |
Product Description

Measuring 12x17x13mm, it fits between the piston wrist pin and the connecting rod, ensuring smooth rotation. This aftermarket bearing directly replaces the OEM part 9512 003 3281.
Product Details
1. Direct OEM Replacement
This bearing is manufactured to replace the original Stihl part number 9512 003 3281, ensuring a precise fit in the connecting rod.
2. Critical for Piston Assembly
This bearing sits between the wrist pin and connecting rod, allowing smooth piston movement during engine operation. It is a required component for any top-end rebuild.
3. Wide Model Compatibility
Fits multiple Stihl professional saw models, including the 064, 066, MS650, MS660, and TS700/TS800 cut-off saws.
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FAQ
Q1: Is this bearing the same as the clutch drum bearing?
A: No. This is the piston wrist pin bearing (12x17x13mm), used in the piston assembly. The clutch drum bearing is a different part.
Q2: Should I choose OEM or aftermarket?
A: OEM bearings are about $10 and many users recommend them for reliability. Quality aftermarket options are available at a lower price.
Q3: When should I replace this bearing?
A: Always replace the piston pin bearing during a top-end rebuild. Visible rust, scoring, or worn needle rollers indicate immediate replacement is needed.
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