Automechanika Shanghai · Dec 2–5 · Booth 8.1M104
OTT 6303 2RS Deep Groove Ball Bearing, front angle view

Alternator Bearings

6303 Alternator Bearing

Part No.6303-2RS

High-speed deep groove ball bearing optimized for automotive alternator applications with ultra-low noise. Rubber shielded with 17mm bore, used in many passenger car alternators — fitment depends on the alternator model, so send your OEM number to confirm.

Bore (d)
17 mm
Outer dia. (D)
47 mm
Width
14 mm

Interchangeable with

  • OE DENSO 949100-1010; DENSO 949100-2820; Bosch 1900905304; Bosch 1900905379; Nissan 23120-65004; Mitsubishi S930P31071
  • WAI 6-303-4W
  • Alternator / starter unit DENSO 104211-3710; Bosch 0-120-469-560; 0-120-469-822; 0-120-469-832; 0-120-489-526
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MOQ
1000 pcs
Lead time
30-45 days for standard orders
Shipping
FOB Ningbo / Shanghai

Technical data

Specifications

Model6303-2RS
Inner Diameter17 mm
Outer Diameter47 mm
Width14 mm
Speed Rating (Grease)9,500 rpm
Speed Rating (Oil)11,000 rpm
Noise LevelUltra-low (Z3V3)
Seal Type2RS (Rubber shielded)

Cross Reference

OTT 6303-2RS is interchangeable with the following brand part numbers:

BrandPart Number
OEDENSO 949100-1010; DENSO 949100-2820; Bosch 1900905304; Bosch 1900905379; Nissan 23120-65004; Mitsubishi S930P31071
WAI6-303-4W
Alternator / starter unitDENSO 104211-3710; Bosch 0-120-469-560; 0-120-469-822; 0-120-469-832; 0-120-489-526

Applications

  • Selected Honda Civic 1.5L (2016–2017) with DENSO 104211-3710 135 A alternator
  • DENSO alternator bearing service reference

Fitment note: cross-references and vehicle applications are for identification. Send us the OE number, VIN or a sample and we will confirm the exact fitment before you order.

Key Features

  1. 01Ultra-low noise Z3V3 grade
  2. 02High-speed rated
  3. 03Rubber shielded sealing

Packaging

Available in OTT branded packaging or custom OEM packaging. Individual bearings are sealed in PE bags, packed in branded carton boxes, then palletized in wooden crates for export shipping.

OTT branded boxes and PE bags
OTT carton boxes
Complete OTT packaging lineup
OTT single carton box
OTT branded boxes with wheel hub bearing kit in anti-rust bags
OTT wooden crate for export

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Application Guides

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Need 6303-2RS in volume, or a variant of it?

Share an OE or competitor number, a drawing or target dimensions and your annual volume. Samples available for qualified projects.

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MOQ
1000 pcs / model
Lead time
30-45 days for standard orders
Shipping
FOB Ningbo / Shanghai
WhatsAppGet a Quote