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Alternator Honda ST1100 Pan European ST1100A ABS 1996-2003 40A Upgrade 31100-MAJ

Alternator Honda ST1100 Pan European ST1100A ABS 1996-2003 40A Upgrade 31100-MAJ

SKU:400-52377

Regular price £360.30 GBP
Regular price £432.36 GBP Sale price £360.30 GBP
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Pan European Alternator

Fits Honda ST1100 & ST1100A (40 Amp Air Cooled)

Keep your touring legend on the road with this high-quality **40 Amp Replacement Alternator**. Designed specifically for the **Honda ST1100 Pan European** (1996-2003 models), this air-cooled unit is a direct replacement for the factory Denso alternator, providing reliable power for your lights, ABS, and touring accessories.

This unit is also highly sought after by owners of older (pre-1996) ST1100s looking to upgrade their problematic 28-amp oil-cooled system to this robust **40-amp air-cooled** setup (note: retrofitting to older bikes requires additional bracketry and modifications not included).

DIRECT REPLACEMENT: Fits 1996-2003 models directly. Replaces Honda part numbers 31100-MAJ-G41 and 31100-MAJ-G42.

Key Features

  • 40 Amp Output: Standard for 1996+ models.
  • Air Cooled: Superior reliability over oil-cooled units.
  • Direct Fit: Matches OEM mounting points.
  • Complete Unit: Ready to install.

Technical Specs

Voltage: 12 Volts
Amperage: 40 Amps
Regulator: Internal (IR)
Design: Denso Style
SKU Reference: 400-52377

Vehicle Fitment Guide

Make Model Year Range
Honda ST1100 Pan European 1996 - 2003
Honda ST1100A Pan European (ABS) 1996 - 2002

Part Number Cross Reference

Honda 31100-MAJ-G41, 31100-MAJ-G42, CGD38
Denso 101211-1570
Arrowhead AND0451
Lester 12505

Frequently Asked Questions

Will this fit my 1992 ST1100?

Not directly. The 1990-1995 models used a 28A oil-cooled alternator. While this 40A unit is a popular upgrade, fitting it to a pre-1996 bike requires changing the mounting bracket and other components.

Is this air cooled?

Yes, this is the air-cooled 40 Amp version found on the later Pan European models, known for being more reliable than the earlier oil-cooled units.

Does it come with the cush drive rubbers?

No, this listing is for the alternator unit only. You should inspect your existing cush drive dampeners and replace them if worn to ensure smooth operation.

Note: Please verify your motorcycle model year before purchasing.
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Shipping calculated at checkout. Free shipping over £150. Terms apply