Harddrive Regulator - BLK Dyna `1999-2003 OEM 74518-99a — Harley-Davidson Dyna Super Glide, Dyna Low Rider, Dyna Wide Glide (1999-2003)

Harddrive regulator for 1999-2003 Harley-Davidson Dyna models, engineered to meet or exceed OEM specifications. Uses high-power SCR (Silicon Controlled Rectifier) technology with sealed encapsulation and advanced circuit board design for cooler, more efficient operation.

Features

• Meets or exceeds OEM 74518-99a specifications
• High-power SCR technology for cooler operation
• Sealed, high-temperature encapsulation
• Advanced surface-mount circuit board design minimizes heat buildup
• OEM-grade high-temperature wiring harness

Specifications

• Brand: Harddrive
• Manufacturer Part #: H1899
• UPC: 191361170003
• Dimensions: 5.2 in L x 5.1 in W x 2.8 in H
• Weight: 1.11 lbs
• Country of Origin: China (Mainland)

Fitment

Fits 1999-2003 Harley-Davidson Dyna models with OEM part number 74518-99a.

Frequently Asked Questions

Will this regulator fit my 2004+ Dyna?

No — this part is specific to 1999-2003 Dyna models. Later model years require a different regulator.

What does the regulator do?

The regulator maintains consistent charging voltage to the battery and electrical system, protecting components from voltage spikes and overcharge.

Is this an OEM Harley part?

No — Harddrive is an aftermarket manufacturer. This regulator is built to meet OEM Harley specifications as a direct replacement for part 74518-99a.

Do I need a special harness to install this?

The regulator comes with OEM-grade wiring harness. Confirm the connector matches your bike's existing regulator before purchase.