Yamaha Genuine Bearing 6904 Camshaft Bearing 93306-904Y2 for Mio Sporty

Yamaha Genuine 6904 camshaft bearing for selected Yamaha motorcycles using OEM part number 93306-904Y2. This is an open-type, single-row deep-groove ball bearing intended to support smooth camshaft rotation. Also searched as cam bearing, camshaft ball bearing, bearing 6904, bearing 61904, or Mio Sporty engine bearing. Product specifications Brand: Yamaha Genuine Parts Yamaha part number: 93306-904Y2 Bearing marking: NTN 2J-6904CS13 Standard bearing size: 6904 ISO equivalent number: 61904 Inner diameter: 20 mm Outer diameter: 37 mm Width/thickness: 9 mm Bearing type: Single-row deep-groove ball bearing Closure: Open type—no rubber seals or metal shields Material: Bearing steel Application: Camshaft support bearing Quantity: 1 piece Country marking: Made in Japan Available size 6904 / 61904 Dimensions: 20 × 37 × 9 mm One OEM specification per listing Primary fitment Yamaha Mio Sporty The same part number may appear on selected Yamaha Mio Soul, Fino, Nouvo/Neo 115 and related carbureted models. Compatibility varies by model year and engine version, so confirm 93306-904Y2 through the parts catalogue or compare the removed bearing before ordering. Equivalent size by bearing brand Brand Dimensionally equivalent open-bearing number NTN 6904 / OEM marking 2J-6904CS13 NSK 6904 Koyo/JTEKT 6904 Nachi 6904 SKF 61904 FAG 61904 Timken 61904 These references share the basic 20 × 37 × 9 mm dimensions. However, the Yamaha-supplied CS13 suffix may indicate an application-specific internal specification. For an exact replacement, use 93306-904Y2 or match the complete bearing marking. Important seal-type reminder 6904 or 61904: Open bearing 6904Z: One metal shield 6904ZZ or 61904-2Z: Two metal shields 6904-2RS, 6904LLU or 61904-2RS: Two rubber seals Shielded and sealed versions may have the same dimensions but are not automatically equivalent to the open OEM camshaft bearing. Package inclusion 1 × Yamaha Camshaft Bearing 93306-904Y2 Camshaft, seals, cylinder-head components and installation tools are not included. Installation reminder Check the bearing number and dimensions before checkout. Bearing installation requires proper alignment and suitable tools; avoid applying installation force through the balls. Professional engine installation is recommended.