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Product Details
The Genuine Honda 23210-PNS-020 Mainshaft is an OEM replacement transmission mainshaft for select Honda and Acura K-Series 6-speed manual transmissions. Manufactured to Honda's factory specifications, this mainshaft provides the proper dimensions, gear geometry, splines, and bearing surfaces required for a reliable transmission rebuild or repair.
Honda's mainshaft incorporates 1st and 2nd gear directly into the shaft, with factory ratios of 3.267 for 1st gear and 2.130 for 2nd gear. It is commonly used in the 2002–2006 Acura RSX Type-S and 2006–2011 Honda Civic Si K-Series 6-speed transmissions.
Features:
- Genuine Honda OEM transmission mainshaft
- Honda part number 23210-PNS-020
- Designed for K-Series 6-speed manual transmissions
- 1st and 2nd gears are integrated into the mainshaft
- 1st gear ratio: 3.267
- 2nd gear ratio: 2.130
- Precision-machined splines, gear teeth, journals, and bearing surfaces
- Ideal for transmission rebuilds or replacement of a worn or damaged mainshaft
- Manufactured to Honda OEM specifications for proper fit and operation
- Replaces previous Honda part number 23210-PNS-010
- Sold as a complete mainshaft assembly
Applications include:
- 2002–2006 Acura RSX Type-S – 6-Speed Manual
- 2006–2011 Honda Civic Si – 6-Speed Manual
- 2008 Honda Civic MUGEN Si – 6-Speed Manual
| Part Number: | 23210-PNS-020 |
| Brand: | Honda |
| Transmission: | Manual |
WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. www.P65Warnings.ca.gov.
Vehicle Fitment
| Year | Make | Model | Trim | Notes |
|---|---|---|---|---|
| 2002 | Acura | RSX | Type-S | Manual |
| 2003 | Acura | RSX | Type-S | Manual |
| 2004 | Acura | RSX | Type-S | Manual |
| 2005 | Acura | RSX | Type-S | Manual |
| 2006 | Acura | RSX | Type-S | Manual |
| 2006 | Honda | Civic | Si | Manual |
| 2007 | Honda | Civic | Si | Manual |
| 2008 | Honda | Civic | MUGEN Si | Manual |
| 2008 | Honda | Civic | Si | Manual |
| 2009 | Honda | Civic | Si | Manual |
| 2010 | Honda | Civic | Si | Manual |
| 2011 | Honda | Civic | Si | Manual |
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