Dodge W200 Pickup Alternator Guide for 1957-1969 Models
Keep your classic Dodge W200 charging system reliable with the right new alternator.
- First, check the external voltage regulator and its ground connection; it's a common failure point often mistaken for a bad alternator.
- Dodge switched from generators to more efficient alternators around 1961; know which system your truck has.
- If you have added electrical accessories, choose a high-output alternator from a brand like Powermaster to meet the extra demand.
- Charging problems can also be caused by the firewall connector or the ammeter gauge, not just the alternator.
Generator vs. Alternator on 1957-1969 W200 Pickups
Your 1957-1969 Dodge W200 could have come with either a generator or an alternator, depending on the exact year. Chrysler started using alternators around 1960-1961 because they are more efficient, lighter, and charge better at idle than older generators. If you have a truck from the late 1950s, it most likely has a generator. By the mid-1960s, alternators were standard. Alternators are a significant upgrade, providing more stable power for modern needs.
Pro Tip: Check Your Voltage Regulator First
These Dodge trucks use an external voltage regulator. It's a common failure point and often misdiagnosed as a bad alternator. Symptoms like flickering lights, a battery that's overcharging (smells like rotten eggs), or undercharging can point to a bad regulator. Before replacing your alternator, make sure the regulator is working correctly and has a good ground connection to the firewall.
Choosing the Right Aftermarket Alternator
When picking a new aftermarket alternator, you have a few good options. The choice often comes down to your truck's needs and your budget.
- Stock Replacement: For a truck with original electrical needs, a standard replacement from a brand like Remy or MPA is a solid choice. They are designed to meet or exceed original equipment (OE) specifications.
- High-Output Upgrade: If you've added accessories like powerful lights, a modern stereo, or a winch, you should consider a high-output alternator. Powermaster specializes in these units, which provide more amperage to handle the extra electrical load.
Brand Reputations
Here's a quick look at the available brands:
- MPA (Motorcar Parts of America): MPA offers new and remanufactured alternators under brands like Quality-Built. They focus on meeting OE specs and test every unit.
- Powermaster: Often seen as a performance upgrade, Powermaster provides high-amperage alternators that are popular for hot rods and trucks with extra electrical demands. Some users report long-term reliability issues, while others are very satisfied.
- Remy: A long-standing name in the industry, Remy offers both new and remanufactured alternators that are widely available. User reviews are generally positive, with many considering them a reliable, cost-effective option.
A Note on Charging System Problems
On these older Mopar trucks, charging problems aren't always the alternator's fault. The ammeter gauge in the dashboard and the main firewall connector are known weak points. These components can corrode or burn out, creating a voltage drop or an open circuit that prevents the battery from charging, even with a good alternator.
Frequently Asked Questions
Do I need a special alternator if I have extra accessories?
Yes, if you have added high-draw accessories like off-road lights, a powerful stereo, or a winch, a high-output alternator is highly recommended. A standard alternator may not keep up with the demand, leading to a drained battery and poor performance of your accessories. Brands like Powermaster offer units with higher amperage ratings for this purpose.
Is it difficult to replace the alternator on my W200?
No, replacing the alternator on these trucks is a straightforward job for a DIY mechanic. It is typically mounted in an accessible location on the engine. The process involves disconnecting the battery, removing the drive belt, unbolting the old alternator, and then installing the new one in reverse order.
What is an external voltage regulator and why is it important?
An external voltage regulator is a separate component mounted on the firewall that controls the alternator's output voltage. It's crucial for preventing overcharging or undercharging of the battery. On 1960s Dodge trucks, this part can fail and cause charging issues that seem like a bad alternator. Always check it before replacing the alternator itself.
What's the difference between a generator and an alternator?
Generators were used on earlier models (pre-1961) and are less efficient, especially at low engine speeds. Alternators, used on later models, produce more power, are more reliable, and provide a steadier charge even at idle. This makes them much better for modern driving conditions.
Technical Specifications
OEM Part Numbers: 3752230 3656219
System Voltage: 12V; Polarity: Negative Ground; Regulator: External
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.