The Genuine Tohatsu Gear Case Shim 346-64081-0 is an OEM precision shim used in the lower unit (gear case) to correctly set gear and bearing preload during assembly or repair. Measuring 35 mm × 41.9 mm × 0.1 mm, this shim is manufactured to tight tolerances to ensure correct gear engagement and long service life. It is commonly used during lower unit rebuilding or when adjusting drive shaft and gear clearances.
Shims (Tohatsu)
Gear Case Shim 346-64081-0
Brand: Tohatsu
SKU: 346-64081-0
$8.80
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Key benefits
Key Benefits
- Genuine Tohatsu OEM replacement
- Precision ground steel shim
- Maintains correct gear and bearing preload
- Essential for lower unit assembly and servicing
- Direct OEM fit
- Corrosion-resistant finish
- Manufactured to exact factory tolerances
- Superceded from 346-64023-0
Compatible Tohatsu Outboard Motors
- 2-Stroke Models
- M9.9D2
- M15D2
- M18E2
- MX18E2
- M25H
- 25JET
- M30H
- 4-Stroke Models
- MFS15C
- MFS20C
- MFS25B
- MFS25C
- MFS30B
- MFS30C
Compatible Mercury & Mariner Outboards
- This shim may also be used in selected Japanese-built Mercury and Mariner outboards that share Tohatsu-designed gearcases. Because Mercury and Mariner sourced engines from multiple manufacturers, compatibility should always be confirmed by model and serial number before ordering.
Signs Replacement Is Required
- Gear case overhaul
- Replacement of bearings or gears
- Incorrect gear backlash or preload
- Lower unit rebuilding
- Water damage requiring gear case disassembly
- Excessive gear noise after repair
Why Use Genuine Tohatsu Shims?
- Gear case shims are critical for setting the correct bearing preload and gear engagement. Using the correct genuine shim thickness ensures smooth operation, reduces premature wear, and helps maximise the service life of the lower unit. During gear case servicing, always measure and select the shim thickness specified in the Tohatsu service manual.
Shipping
Ships Australia-wide