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Ships within 48 hours · Estimated delivery Aug 20 - Aug 25
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Description
Voltage Regulator | Mk4 | B5 | Mk1 TTThe voltage regulator maintains a constant voltage level by controlling the output of the alternator. If you're alternator is failing to charge your battery or run the electrical systems of your vehicle, the internal diodes of the regulator may be faulty. A good way to check for a faulty voltage regulator is to use a digital multimeter on the battery, with the engine running, to read the charging voltage. If voltage is not constant around 13 to 14
The voltage regulator maintains a constant voltage level by controlling the output of the alternator. If you're alternator is failing to charge your battery or run the electrical systems of your vehicle, the internal diodes of the regulator may be faulty. A good way to check for a faulty voltage regulator is to use a digital multimeter on the battery, with the engine running, to read the charging voltage. If voltage is not constant around 13 to 14 volts, chances are the voltage regulator has gone out. Replace yours to restore proper operation to your charging system.This product fits:
- 1999.5-2005 Golf/Jetta
- 1998-2005 Passat
- 1998-2006 Audi TT
Part #'s
038-903-803-E / 038903803 E / 038 903 803 E / 038903803E
038-903-803-EX / 038903803 EX / 038 903 803 EX / 038903803EX
389-038-03E-X / 38903803E X / 389 038 03E X / 38903803EX
Bosch Part #"s
198-6AE-012-4 / 1986AE012 4 / 198 6AE 012 4 / 1986AE0124
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 5
Great product that meets a specific need
Size: 3 FT
This is a unique product that works as advertised. It met a specific need. Very happy with it. Ordered a second one!
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Reviewed in the United States on February 9, 2026
★★★★★ 4
Great plug
Size: 3 FT
I just love it. The flat plug is what I needed and now my plug stays in very well.
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Reviewed in the United States on March 23, 2026
★★★★★ 5
Recommend
Size: 3 FT
Love the rotation, multiple charging ports and size
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Reviewed in the United States on May 6, 2026
★★★★★ 5
high quality
Size: 1.5 FT
perfect for me. my daughter purchased 2 of them and I really like how it works. I give this product an A+ for practicality, funtionately and charging capabilities. it come with screws and with a super resistant sticket to put it on. the wall. it has a button to turn on and off that makes it that much functional
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Reviewed in the United States on May 21, 2026
★★★★★ 3
Needs better adhesive
Size: 3 FT
It's working great and it's in the location i needed plugs to reach, it but the adhesive isn't working well
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Reviewed in the United States on January 12, 2026
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