SKU: 27784136736

Mobiletron Alternator Voltage Regulator 12V - REG5003

Sale price$146.28 Regular price$162.53
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Description

Mobiletron Alternator Voltage Regulator 12V - REG5003Product Details & Application This is a Mobiletron alternator voltage regulator (REG5003). Confirm the alternator label, plug style and rating before ordering. Key Details SKU REG5003 Component Alternator Voltage Regulator Brand Mobiletron Part MPN REG5003 Specs 12V Application & Compatibility Mobiletron alternator voltage regulator with 12V. Listed for selected Mazda applications confirm against your alternator before ordering. Confirm the plug

Product Details & Application

This is a Mobiletron alternator voltage regulator (REG5003). Confirm the alternator label, plug style and rating before ordering.

Key Details

SKU
REG5003
Component
Alternator Voltage Regulator
Brand
Mobiletron
Part MPN
REG5003
Specs
12V

Application & Compatibility

  • Mobiletron alternator voltage regulator with 12V.
  • Listed for selected Mazda applications - confirm against your alternator before ordering.
  • Confirm the plug style, pin layout and mounting match the original unit before ordering.

Professional Fitment Required: Electronic, electrical, and electromechanical components require correct identification before installation. Compare the new unit to the removed unit and verify mounting orientation, terminal or connector type, pin count or terminal arrangement, voltage rating, polarity, and any pulley or bracket configuration where applicable. Incorrect installation, polarity reversal, water or moisture ingress, improper connector seating, or mismatched specifications can damage the component, related ECU systems, or cause persistent fault codes. Installation by a qualified, VAT-registered workshop with appropriate diagnostic equipment is recommended.

Returns Notice: Once an electronic, electrical, or electromechanical component has been fitted, plugged in, energised, or shows signs of installation, returns are limited to manufacturing defect only. Confirm part compatibility before opening sealed packaging.

Compatibility Verification Notes

  • Confirm compatibility using the alternator label, plug type, pin count and original part comparison before ordering.
  • Match the supplied identifiers to your original unit, including 12V, especially where multiple electrical variants exist.
  • Fitment data may vary by alternator supplier, production date and market. Confirm against the unit on the vehicle before ordering.
  • This listing is for part identification and compatibility checking only. Installation must be carried out according to the vehicle manufacturer's service information by a suitably qualified person.

Common Questions

What brand is this part?
This listing is for a Mobiletron alternator voltage regulator.

How do I confirm this is the right alternator voltage regulator?
Match the listed alternator type, plug, pin count and rating to your original unit before ordering.

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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 27784136736

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This is like liquid gold for your vehicle,it's molecular make up,is far superior to any oil out there,as it gets hot,it's molecules bind to every component inside your engine and attaches itself to the metal and fills in the stress points,all points really,it basically soaks into the metals,and is by far the most long lasting and does not break down like other oils,I get 10k off one oil change and I have 273,000 miles on my 03 Tahoe and this stuff is incredible I don't have any ticks,clicks,knocks, Nothing,not on fire up,cold start,my truck runs about five degrees cooler,I get a couple more miles to the gallon and my motor purrs like new,I could probably go 12-15k between oil changes,but I change it with the filter at 10K a new AC Delco pf46e and a 5-1/4 qt jug of liquid moly 5-30 full synthetic a new crush washer and I'm good for 10,000 miles Easily.
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Reviewed in the United States on May 17, 2026
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John Connor
Whiting, US
★★★★★ 5
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Size: 5 Liter, Style: 1 Pack, Configuration: 0W-20
I recently switched over to this oil and it’s honestly one of the best upgrades I’ve made for my 2018 Mazda 3 Hatchback 2.5L. The 5 liter jug is the perfect amount for a full change, and I really like knowing it’s a high-quality fully synthetic formula that gives my engine the protection it deserves. The first thing I noticed was how much smoother cold starts became—no more of that rough, clunky sound in the mornings. The engine feels quieter overall and runs more efficiently, like it’s not straining as much. I’ve also seen fewer deposits and buildup, which gives me peace of mind about long-term wear. Another thing I appreciate is that it’s designed with modern engines in mind—safe for turbocharged setups and catalytic converters. It also blends easily with other oils, which makes topping off simple if I ever need to. Highlights for me: Excellent cold-start protection, even on chilly mornings. Noticeable improvement in smoothness and reduced engine noise. Works well with today’s engines, including turbos. Easy to mix when topping off. Overall, this oil gives me confidence that my engine is well-protected and performing at its best. Definitely feels like a premium choice that’s worth it.
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