Compufire Electric Rotor - NON Vented `1981-1999 BT/EVO (oem 29957-81b) — Harley-Davidson (1981-1999)

Compufire electric rotor for 1981-1999 Harley Big Twin and EVO engines, a non-vented OEM replacement (29957-81b). Direct fit for 32A alternator charging systems.

Features

• 32A charging system compatible
• Non-vented design
• Made in the USA
• Direct OEM replacement (29957-81b)

Specifications

• Brand: Compufire
• Manufacturer Part #: 55600
• UPC: 694342548117
• Dimensions: 8 in L × 2 in W × 8 in H
• Weight: 5 lbs
• Country of Origin: USA

Fitment

Fits 1981-1999 Harley-Davidson Big Twin and EVO models with 32A charging systems.

Frequently Asked Questions

What Harley models does this rotor fit?

Harley Big Twin and EVO models from 1981 to 1999 with 32A alternators. Check your OEM part number (29957-81b) against your bike's specification.

Is this vented or non-vented?

This is a non-vented rotor. It is not compatible with vented alternator housings.

Is this an OEM Harley part or aftermarket?

Compufire manufactures this as a direct replacement for OEM Harley rotor 29957-81b. It meets OEM specifications.

Will this work with my stock alternator?

Yes, if your bike has the original 32A charging system. Different amperage alternators require different rotors.

Does installation require special tools?

You'll need a rotor removal tool and basic hand tools. Professional installation is recommended if you're unfamiliar with alternator work.