Alternator Conversion Kit, 55 Amp for Type 1 VW

OVERVIEW

Upgrade your classic air-cooled engine''s charging system with the EMPI 55 Amp Alternator Conversion Kit, the definitive solution for Volkswagen owners tired of the limitations of the antiquated generator. For decades, the standard 12-volt generator served the Type 1 engine well, but modern driving demands more consistent power, especially at idle. This kit replaces your old, bulky generator and external regulator with a high-output, internally regulated alternator that provides a steady 55 amps of charging power. Whether you are running high-intensity headlights, a modern stereo system, or electronic ignition, this conversion ensures your battery stays topped off and your electrical components function at peak efficiency without the flickering lights or dimming associated with low-RPM generator output.

This comprehensive kit is engineered by EMPI to be a streamlined bolt-on upgrade for your Type 1 upright engine. It includes not just the high-performance 55-amp alternator, but also a new alternator stand, a heavy-duty strap, and a sleek 3-piece black backing plate kit to ensure a professional finish in your engine bay. By switching to an internal regulator, you eliminate several failure points in your wiring harness, simplifying your engine''s electrical layout while significantly increasing reliability. This is the same kit trusted by dune buggy builders and Beetle restorers alike who demand a "set it and forget it" charging system that can handle the rigors of both daily commuting and off-road adventuring.

FITMENT

This alternator conversion kit is designed for Type 1 VW engines (1200cc to 1600cc based) utilized in the following models:

• VW Beetle (Sedan & Convertible): 1967-1977 (Standard) and 1971-1979 (Super Beetle).
• VW Karmann Ghia: 1967-1974.
• VW Thing (Type 181): 1973-1974.
• VW Bus / Transporter: 1967-1971 (Models equipped with Type 1 upright engines only).
• Custom Applications: Ideal for Dune Buggies, Sand Rails, Trikes, and Kit Cars utilizing a VW Type 1 upright engine configuration.
• Note: Can be used on 1954-1966 models if converting the entire vehicle from 6-volt to 12-volt electrical systems.

SPECS

• Charging Output: 55 Amps.
• Operating Voltage: 12 Volts.
• Regulator Type: Internal Solid-State (Eliminates external regulator).
• Alternator Case Material: Cast Aluminum.
• Stand Material: Cast Aluminum (Fits standard Type 1 engine cases).
• Backing Plate Finish: Black Powder Coated, 3-Piece Set.
• Strap Type: Heavy-duty steel mounting strap included.
• Part Number: 00-9445-0.
• Weight: 16.16 lbs.

PRO TIPS

1. The Critical Role of the Charging Indicator Light

One of the most common mistakes during an alternator conversion is overlooking the dashboard charging light. In a Volkswagen circuit, the alternator requires a small amount of current to "excite" the internal field and begin charging. This current flows through the charging indicator bulb. If your bulb is burnt out, or if you are using an LED without the proper resistor, the alternator may fail to start charging until you reach very high RPMs, or it may not charge at all. Always ensure you have a functional incandescent bulb in your speedometer''s "G" or "Gen" slot to guarantee immediate charging upon startup.

2. Proper Wiring Bypass and Gauge Selection

When removing your old external regulator, you must correctly join the wires to complete the circuit. Typically, you will connect the thick red B+ wires together and the smaller D+ and DF wires together to maintain the warning light circuit. However, because you are increasing your output to 55 amps, it is a master technician''s best practice to inspect your main power wire running from the alternator to the starter (or battery). If your original wiring is brittle or undersized, consider upgrading to a 10-gauge or 8-gauge wire to handle the increased amperage without heat buildup or voltage drop.

3. Pulley Alignment and Belt Tension

When installing the new alternator and stand, take the time to ensure your crank pulley and alternator pulley are perfectly aligned. If the alternator sits too far forward or backward, you will experience rapid belt wear and potential bearing failure. Use the shims provided with your pulley (sold separately) to fine-tune the belt tension. You should have approximately 1/2-inch of deflection in the belt. Never over-tighten the belt, as the increased side-load on the alternator front bearing will lead to premature failure and a noisy engine bay. Double-check your stand gasket and use a small amount of sealant to prevent oil leaks at the base of the new stand.