Description
Vehicle Compatibility & Cross References
This Magneti Marelli 12V alternator voltage regulator (RTT119A type) is intended for use on alternators where the original regulator matches the same charging characteristics and OE or comparison numbers listed below. It is commonly supplied for various Alfa Romeo, Fiat and Lancia applications using Magneti Marelli based charging systems.
- Reference: REG9005
- Regulator type: Magneti Marelli RTT119A
- Brands covered (OE ranges): Alfa Romeo; Fiat; Lancia
- OE numbers – Fiat: 9939826; 9941193
- OE numbers – Alfa Romeo / Fiat / Lancia: 83600151; 9939826; 9941193
- Comparison number – Mobiletron: VR-F119
- Other: Interchangeable with equivalent regulators from other suppliers where RTT119A / VR-F119 is specified
Always compare the OE number, regulator marking (RTT119A / VR-F119), plug layout and mounting style on your original unit before ordering REG9005.
Specifications
- Reference: REG9005
- Part type: Alternator voltage regulator
- Regulator family: Magneti Marelli RTT119A
- System voltage: 12V
- Operating voltage: 14V
- Charging voltage: approx. 14.7V
- OE coverage: Alfa Romeo / Fiat / Lancia part numbers 83600151, 9939826, 9941193
- Comparison: Mobiletron VR-F119 and equivalent aftermarket references
- Primary usage: Magneti Marelli based alternators on selected Alfa Romeo, Fiat and Lancia models
- Function: Controls alternator output voltage to protect the vehicle’s electrical system and battery
Features
- Genuine-type Magneti Marelli RTT119A pattern regulator for 12V systems
- Compatible with OE Alfa Romeo, Fiat and Lancia part numbers 83600151, 9939826 and 9941193
- Charging set point around 14.7V for stable battery charging and reliable starting
- Interchange cross to Mobiletron VR-F119 and other equivalent aftermarket regulators
- Compact OEM-style construction to simplify alternator servicing and rebuilds
Why Buy From Us
- Local South African stock on popular Magneti Marelli style regulators like REG9005
- Standard 12 month warranty under normal operating and installation conditions
- Fitment support using OE numbers, regulator markings and alternator photos
- Secure online ordering with reliable nationwide courier delivery
- Trusted by workshops and auto electricians for dependable European charging system parts
Installation & Maintenance Tips
- Disconnect the vehicle battery before removing or installing the alternator or regulator.
- Confirm that your original unit is an RTT119A / VR-F119 type with matching OE number before fitting REG9005.
- Inspect brushes, slip rings and internal wiring for wear, oil contamination or overheating during replacement.
- Ensure all main power and earth cables are clean and tight to avoid voltage drop and intermittent charging faults.
- After installation, test charging voltage at the battery with engine running and electrical loads on to confirm correct regulation.
- If unsure about wiring or testing, have the regulator fitted and checked by a qualified auto electrician.
Important: Product information, kit contents and compatibility are provided as a guide and may contain errors or omissions. Please verify that this part and any included components are correct for your vehicle before installation. For full details see our Website Disclaimer (Errors & Omissions).