Product Description
Genuine Mopar 3874520 Voltage Regulator (NOS)
Restore the charging system reliability and electrical stability of your classic Mopar muscle car or truck with this genuine Mopar 3874520 Voltage Regulator. This is a vintage New Old Stock (NOS) part, manufactured in the USA. It is the standard electronic voltage regulator used on nearly all Chrysler Corporation vehicles from the early 1970s through the late 1980s.
This part is designed for the Charging System (firewall mount) on specific 1970-1987 Dodge, Plymouth, and Chrysler vehicles equipped with standard alternators.
Key Features:
- Part Number: 3874520 (Mopar)
- Interchange: 3438150, 3755850, 4091050
- Technology: Transistorized Electronic Regulator (12-Volt)
- Origin: Made in USA (Vintage Stock)
- Condition: NOS (New Old Stock)
Verified Vehicle Fitment:
| Make | Model | Year | Notes |
| Dodge | Dart / Demon / Challenger / Charger / Coronet | 1970-1976 | All Models |
| Dodge | Aspen / Diplomat / Mirada / Magnum | 1976-1983 | All RWD Models |
| Dodge | D-Series / W-Series Truck / Ram Van | 1970-1987 | Gasoline Engines |
| Plymouth | Valiant / Duster / Barracuda / Satellite / Road Runner | 1970-1976 | All Models |
| Plymouth | Volare / Fury / Gran Fury | 1976-1987 | All RWD Models |
| Chrysler | Newport / New Yorker / Cordoba / Imperial | 1970-1983 | All RWD Models |
Fits Years:
1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987
Unbeatable Prices & Expectations
We scour the country to find the best deals on NOS and NORS parts so we can pass the savings on to you. Our prices are often significantly lower than major competitors.
Please Note: All vehicle fitment data is manually researched from vintage catalogs. While we strive for accuracy, historical data can sometimes be imperfect. Additionally, this part may fit other vehicle makes, models, and years not explicitly listed. We strongly encourage you to perform your own due diligence by comparing our provided photos and specifications to your original part to ensure proper fitment before purchasing.
