SKU: 40118825629

EMPI 55-Amp 12V Alternator — Black, Internal Regulator, All-New | VW Type 1 (00-9486-7)

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Description

EMPI 55-Amp 12V Alternator — Black, Internal Regulator, All-New | VW Type 1 (00-9486-7)EMPI 12V 55 amp alternator with internal voltage regulator black finish for VW Type 1 air cooled engines. Direct replacement for tired factory generators and a substantial charging upgrade for any 12V Beetle, Karmann Ghia, Type 3, or Bus running modern accessories. EMPI part #00 9486 7. Built with all new components no rebuilt parts. Why upgrade from generator to alternator The factory VW generator (used on most 12V air cooled VWs from 1967 through

EMPI 12V 55-amp alternator with internal voltage regulator — black finish — for VW Type 1 air-cooled engines. Direct replacement for tired factory generators and a substantial charging upgrade for any 12V Beetle, Karmann Ghia, Type 3, or Bus running modern accessories. EMPI part #00-9486-7. Built with all-new components — no rebuilt parts.

Why upgrade from generator to alternator

The factory VW generator (used on most 12V air-cooled VWs from 1967 through the mid-1970s) was adequate for the original electrical demands — headlights, ignition, a radio. Modern owners running halogen or LED lighting upgrades, electric fans, performance ignition systems, electric fuel pumps, car audio, or any accessory load quickly exceed what a generator can provide. Symptoms: dim lights at idle, slow cranking after short trips, battery rundown overnight.

A 55-amp alternator delivers nearly double the charging output of a stock 30-amp generator and produces useful charge at idle (which generators barely do). The internal voltage regulator eliminates the external regulator box on the firewall and simplifies wiring. Black finish keeps it visually clean in the engine bay.

EMPI builds these with all-new components — no rebuilt cores, no salvaged parts. That matters: rebuilt alternators are a common source of premature failure.

Specifications

  • Voltage: 12 volts
  • Output: 55 amps
  • Regulator: Internal (no external regulator required)
  • Finish: Black
  • Construction: All-new components, not rebuilt
  • Part number: 00-9486-7 (EMPI)

Fitment

  • VW Type 1 air-cooled engines (Beetle, Karmann Ghia, Type 3, Thing)
  • VW Type 2 Bus through 1971 (Type 1 engine)
  • Cars converting from 6V to 12V (the alternator is the modern standard for converted cars)

Will NOT fit: Stock 6V applications without converting the entire electrical system to 12V. Will not fit Type 4 engines (different mounting and pulley geometry).

FAQ

Will this bolt straight in where my generator is now?
The alternator uses different mounting than a generator. Most installations require a conversion bracket (sometimes included in alternator conversion kits, sometimes sold separately — see EMPI #00-9486-0 for the complete conversion kit version). The pulley and fan belt remain in approximately the same plane.

Do I need to change my wiring?
Yes, somewhat. The external voltage regulator wiring is removed entirely. The alternator's three or four output wires connect to the existing 12V charging system. Most installations are a 30-60 minute wiring job for someone comfortable with basic auto electrical.

Can I run electric fans, audio, and other heavy loads now?
Yes. 55 amps gives you comfortable headroom for typical modern accessory loads. For very heavy audio installations or multiple high-draw accessories, consider the 75 or 95 amp options.

Is the black finish painted or anodized?
Powder-coated black for durability. Holds up to engine bay heat and doesn't chip the way painted alternators do.

Will I lose my "factory look"?
The alternator is visibly different from a generator. For numbers-correct restorations, keep the generator. For driver-quality and resto-mod work, the alternator is a substantial upgrade that most owners prefer.

Does it come with a pulley?
Verify with the listing — most EMPI alternators include a pulley sized to match the VW fan belt. Confirm at order if you need a specific pulley diameter.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 40118825629

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Verified Purchase
Gloria O.
Draper, US
★★★★★ 5
Dog loved them
Great little treat
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Reviewed in the United States on August 10, 2025
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Verified Purchase
Natalia
Dallas, US
★★★★★ 2
So so small! Not worth $
The images in Amazon are nothing like what the product is. The pretzels and rings are minuscule. My two pit/lab mixes will eat one in about 30 seconds. So disappointment. Not worth the $ for what you’re getting. I tried to return items which are individually wrapped but they do not allow returns on these products. I have not opened any of them and still not able to return. If you have a dog under 15lbs these may work! If you have a large breed don’t bother. I’m so disappointed. Pictures above is the product next to a small milk bone biscuit (for reference).
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Reviewed in the United States on January 6, 2025
A
Adrien Lamont
Boise, US
★★★★★ 5
A Premium Magnesium Powder From A Brand I Actually Trust
Thorne has a strong reputation in the supplement world, and this Magnesium Citrate powder is a good example of why. Magnesium is one of those basic minerals that does more than people realize. It supports normal muscle and nerve function, helps with energy production, contributes to bone health, and plays a role in cardiovascular function. The NIH notes that magnesium is involved in hundreds of enzyme systems in the body, including processes tied to muscle and nerve function, blood glucose control, blood pressure regulation, and bone development. (Office of Dietary Supplements) Magnesium citrate in particular is a form many people use because it is generally well absorbed and can also help with occasional constipation. That is both a benefit and something to respect. If you take too much, it can move from “helpful” to “where is the nearest bathroom” fairly quickly. I would start modestly and see how your body responds. The citrus berry flavor is pleasant enough for a mineral powder. It is not candy, and it does not need to be. It mixes reasonably well and is easy to work into a nightly routine or use when you feel like your muscles are tight, your diet has been less than ideal, or you simply want magnesium without swallowing another capsule. The biggest selling point for me is the brand. Thorne is not some mystery-label supplement company with a pretty bottle and a warehouse address nobody wants to talk about. Thorne says its facility is NSF certified, it manufactures more than 40 NSF Certified for Sport products, and it is used by professional and national sports organizations. (Thorne) Their Magnesium Citrate product page also states that the product is third-party tested and certified to verify what is in the package. (Thorne) That matters with supplements. You are not just buying magnesium. You are buying confidence that the dosage, purity, and manufacturing standards are being taken seriously. Thorne usually costs more than bargain brands, but with supplements, cheap is not always the victory it looks like on the front end. Overall, this is a high-quality magnesium option from a brand with real credibility. I like it for muscle support, general wellness, bone and heart-health support, and occasional regularity. Just treat it like a supplement, not a snack, especially if you are sensitive to magnesium or already taking other products that contain it.
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Reviewed in the United States on May 1, 2026
M
momof6
Port Orchard, US
★★★★★ 5
Taste is good, reliable manufacturer
Thorne is a reputable brand that has come out with a magnesium citrate and has been certified by a third-party. I sometimes wonder about supplements online, but having a third-party certify the product gives me more peace of mind. It comes in a double protected container for further peace of mind. This magnesium citrate comes in a powder form and mixes fairly easily with cold water. There is bicarbonate in the product, so it has a slight bubbly texture. This really tastes like citrus berry and is sweetened with monk fruit extract. I like that it has no artificial sweeteners in it. Magnesium has been known to support muscle heart bone and the urinary tract. It can also help with constipation. My husband is a nurse and he says that they regularly administer this in the hospital when a patient has trouble with constipation. The recommended dosage is one scoop to 6 to 8 ounces of water. There are about 60 doses in the container. If taken once a day, this will last for two months. This is a good alternative to other magnesium supplements. It is a form that is usually well absorbed by the body. Given the reputation of the manufacturer, the ease of use, the benefits, and the ease of absorption, I can recommend this product if you are looking to increase magnesium in your diet.
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Reviewed in the United States on May 26, 2026
A
Amazon Customer
Bozeman, US
★★★★★ 5
Certified quality magnesium citrate
If you like powdered supplements and planning to take magnesium citrate, then this one if for you. I take it towards the end of the day, and in addition to the many benefits of magnesium, it actually helps me relax and sleep better, although those are not the main benefits of citrate. I guess we all react differently to supplements. My favorite setup is when I take it in the evening and sip on it during a sauna session. In all cases, I target end of day. The taste is very good and it mixes easily with water. Also, Thorne is a brand I trust and it's certified by various bodies. It's worth the premium but it's better to catch a deal on amazon or add it to subscribe and save for a discount if you're planning to use it long term.
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Reviewed in the United States on June 3, 2026

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