Mainshaft bearing Honda genuine 91002-RAS-003 K-series

Honda Manual Gearbox Bearing – 91002-RAS-003

Genuine Honda OEM ball bearing seated on the input shaft of the manual gearbox. The bearing measures 28×72×18 mm and ensures precise guidance of the input shaft inside the gearbox casing, handling both radial and axial loads during transmission operation. Part number 91002-RAS-003 is the current catalogue number, replacing the earlier number 91002-PPP-003.

Applications

• Honda Accord VII / VIII (2003–2015) – engines K20A6, K24A3, K24Z3, R20A3 – sedan (4D) and estate/Tourer
• Honda Civic VII Type R (2001–2005) – engine K20A2 – 3D hatchback (EP3)
• Honda Civic VIII Type R (2006–2011) – engine K20Z4 – 3D hatchback (FN2)
• Honda Civic VIII (2004–2005) – engine K20A3 – 5D hatchback
• Honda CR-V II / III / IV (2002–2018) – engines K20A4, R20A2, R20A9
• Honda FR-V (2005–2009) – engine K20A9
• Honda Stream I (2001–2005) – engine K20A1

Note: Before ordering, verify the OEM part number against the parts catalogue for your specific model year and configuration – engine availability may vary depending on the market (Europe, Japan, North America).

OEM Reference Numbers

• 91002-RAS-003 – current part number
• 91002-PPP-003 – previous part number (discontinued)

The numbers listed above are Honda OEM reference numbers. Use them to verify compatibility in the official Honda parts catalogue or with your OEM parts distributor.

Signs of Bearing Wear

• Humming or whining noise from the gearbox – particularly noticeable at specific gears or when decelerating
• Increased resistance or grinding sensation when engaging a gear
• Vibrations transmitted through the gear lever during driving
• Detectable play on the input shaft (identified during disassembly)

A worn gearbox bearing should be replaced as soon as possible. Continued use with a damaged bearing accelerates wear on the gear teeth and shafts, and can ultimately result in a costly full gearbox rebuild.

Installation and Service Tips

• Replacing gearbox bearings requires complete transmission disassembly – this work should be carried out by a workshop with the appropriate tooling and experience.
• While the gearbox is apart, inspect the condition of the shaft oil seals and replace them as a precaution – seal costs are low compared to the labour involved in a repeat disassembly.
• Press the bearing into place using a proper fitting sleeve or press – never strike the outer race directly, as this will damage the bearing tracks.
• After reassembly, check the gearbox oil level and top up according to Honda specification (Honda MTF or Honda Genuine Manual Transmission Fluid).

FAQ – Frequently Asked Questions about Honda Gearbox Bearing 91002-RAS-003

Does 91002-RAS-003 fully replace 91002-PPP-003?
Yes. 91002-RAS-003 is the current Honda catalogue number, replacing the earlier 91002-PPP-003. The part is identical and fits as a direct replacement with no modifications required.

How many bearings are inside the gearbox, and is it worth replacing them all at once?
A Honda K/R-series manual gearbox contains several bearings supporting the input shaft and countershaft, plus two bearings in the differential assembly. If the gearbox is already disassembled, it is advisable to inspect all bearings and replace any that show signs of wear – this saves time and labour costs if further repairs are needed down the line.

Does this bearing fit the Civic Type R EP3 (K20A2)?
Yes, bearing 91002-RAS-003 (previously 91002-PPP-003) is a genuine OEM part for the 6MT gearbox fitted in the Civic VII Type R (EP3) with the K20A2 engine.

What gearbox oil should be used after reassembly?
Honda recommends using genuine Honda MTF (Manual Transmission Fluid) or an equivalent meeting Honda's specification. Using standard engine oil or an unsuitable transmission fluid may lead to premature wear of the synchronisers and bearings.