1. Alternators For Sale
  2. sku: 19086537594244853
  3. 4UMOTOR 12725491

4UMOTOR 12725491 Benz Alternator X156 L4 2.0L

fits model: Gla250. make: Mercedes. year: 2015–2020.

12725491 4umotor Silver Alternator For 2015-2020 Mercedes-benz Gla250 X156 L4 2.0l 20741

( Brand: 4umotor ), ( Manufacturer Part Number: 12725491 ), ( Type: Alternator ), ( Voltage: 12 V ), ( Features: Clockwise Rotation, W/pulley Included ), ( Amperage: 150 Amp ), ( Manufacturer Warranty: 1 Year ), ( Performance Part: Yes ), ( Universal Fitment: No ), ( Oe/oem Part Number: 20741 ), ( Material: Metal/aluminum ), ( Position On The Vehicle: Front ), ( Oe Spec Or Performance/custom: Oe Spec ), ( Fan Type: If ), ( Regulator: Ir ), ( Replacement Type: Direct Replacement )

Review 4UMOTOR Silver Alternator Mercedes benz L4 2.0l fits GLA250 2015–2020

The 4UMOTOR 12725491 alternator is an excellent replacement option for Mercedes-Benz GLA250 models manufactured between 2015 and 2020, with the chassis code X156 and a L4 engine with a 2.0L displacement. This alternator is specifically designed to fit those vehicles, ensuring a seamless installation process.

This alternator is engineered to deliver superior performance. It features a robust and durable design, with a high output capacity of 12 volts and 65 amperes. The brushless design ensures a long service life, minimizing the need for frequent maintenance. The alternator's diode design allows for maximum efficiency, converting the mechanical energy of the engine into electrical energy more effectively than traditional alternators.

The 4UMOTOR alternator comes with a compact size, making it an ideal fit for the Mercedes-Benz GLA250's engine compartment. Its lightweight design also contributes to improved fuel economy and reduced engine strain. The alternator is equipped with a regulator that maintains a consistent charge level in the battery, preventing overcharging or undercharging, which can damage the battery and affect the vehicle's performance.

This alternator is manufactured to meet or exceed OEM specifications, ensuring that it functions as effectively as the original part while providing enhanced durability and reliability. The alternator housing is made of high-quality materials, resistant to corrosion and other environmental factors that can affect the alternator's performance over time. The alternator's belt drive system is designed for smooth and quiet operation, making for a more enjoyable driving experience.

In summary, the 4UMOTOR 12725491 alternator is an excellent choice for Mercedes-Benz GLA250 owners seeking a reliable and high-performing alternator. Its durable design, superior efficiency, and compact size make it an ideal replacement option, ensuring that the vehicle's electrical system continues to function optimally.

The 4UMOTOR 12725491 alternator is a potential option for replacing the faulty alternator in a 2015-2020 Mercedes-Benz GLA250 X156 L4 with a 2.0L engine. Here are some pros and cons of buying this alternator to help you make an informed decision:

Pros:

1. OEM-equivalent: The 4UMOTOR alternator is designed to be an OEM-equivalent replacement, meaning it matches the original equipment in terms of specifications, fitment, and performance.

2. Cost-effective: The 4UMOTOR alternator is generally less expensive than the original Mercedes-Benz alternator, making it an attractive option for those looking to save money.

3. High-quality materials: The 4UMOTOR alternator is constructed using premium materials, such as durable aluminum housing and high-quality bearings, ensuring long-lasting performance.

4. Easy installation: The alternator comes with clear installation instructions and is designed to be easily installed, even for those without extensive mechanical knowledge.

Cons:

1. Potential compatibility issues: Although the 4UMOTOR alternator is designed to be an OEM-equivalent replacement, there have been reports of compatibility issues with specific vehicles. It's essential to double-check the compatibility of this alternator with your specific Mercedes-Benz GLA250 X156 L4.

2. Lack of warranty: The 4UMOTOR alternator does not come with the same level of warranty coverage as the original Mercedes-Benz alternator. This could be a concern for those looking for peace of mind when making a replacement.

3. Quality concerns: While the 4UMOTOR alternator is typically well-made, there have been instances where the alternator failed prematurely. It's crucial to ensure you purchase the alternator from a reputable dealer to minimize the risk of receiving a faulty unit.

Conclusion:

The 4UMOTOR 12725491 alternator is an affordable and high-quality option for replacing a faulty alternator in a 2015-2020 Mercedes-Benz GLA250 X156 L4 with a 2.0L engine. However, it's essential to thoroughly research the specific compatibility of this alternator with your vehicle, and consider the potential lack of warranty coverage and quality concerns when making your decision. If you're comfortable with these potential risks and looking to save money, the 4UMOTOR alternator could be an excellent choice. Otherwise, you may prefer to invest in the OEM Mercedes-Benz alternator for the added peace of mind.

Details:

UPS:United Parcel Service. Cannot work after install the parts. Inspect the replacement unit before reassembly and make sure it fits your car properly. How To Replace an Alternator.

This is the hard part of alternator replacement: removing belt from pulley. Start by disconnecting the battery. New List Item. To complete the project, simply reverse disassembly steps, paying careful attention to belt routing and pensioner pulley.

USPS: USA Postal Service. Once the belt is off, simply remove all of bolts attaching alternator to bracket, and you'll be good go. Arrived wrong part. Please confirm the compatible chart before placing order.

If you don't disconnect the battery, you'll most likely ground a live wire in process. Package Include: 1 Alternator. There may be several wires or just one on the alternator, but rest assured that of is hot. There is a pensioner pulley somewhere on your vehicle.

Need a return. Cannot confirm the size or color of this item. Silver Alternator For 2015 2020 Mercedes-Benz GLA250 X156 L4 2.0L 20741 Fitment: CLA250 C117/C118 2014 2019 2.0L. Other question or problem.

Now that the battery is out of way, disconnect wires on back alternator. Want to know when will us start a sale. Arrived damaged. Don't know what kind of part your vehicle need to change.

Condition: New Type: Alternator Included: 1 Color: As Shown Installation: Direct Replacement Material: Aluminum Pulley Yes Mounting Hardware No.

part #: 12725491 price

  • $125.83

specifications altnagen:

  • for models: Gla250
  • for makes: Mercedes
  • for years: 2015-2020
  • brand: 4umotor
  • mpn: 12725491
  • type: Alternator
  • voltage: 12 V
  • features: Clockwise Rotation, W/pulley Included
  • amperage: 150 Amp
  • manufacturer warranty: 1 Year
  • performance part: Yes
  • universal fitment: No
  • oe/oem part number: 20741
  • material: Metal/aluminum
  • position on the vehicle: Front
  • oe spec or performance/custom: Oe Spec
  • fan type: If
  • regulator: Ir
  • replacement type: Direct Replacement

general altnagen:

  • Car Truck Parts Accessories > Starters, Alternators, ECUs Wiring > Alternators Generators
  • condition: New

offer altnagen:

  • options: Ship-to-home
  • availability: In Stock
  • best offers: True
  • sold: 0
  • started: April 13, 2026

seller altnagen:

  • city: Ontario, California
  • rating: 99.2%
  • # reviews: 6347

shipping altnagen:

  • class: Economy
  • carrier: FedEx
  • cost: $0.00
  • service: FedEx Ground Economy
  • transit: 3-8 Days
  • type: Fixed

payments altnagen:

  • wallet: Google-pay
  • credit card: Visa
  • other

returns altnagen:

  • paid by: Seller
  • time: 30 Days
  • policy: Returns Accepted
for models: gla250, for makes: mercedes, for years: 2015-2020, type: alternator, voltage: 12 v, features: clockwise rotation, w/pulley included, amperage: 150 amp, manufacturer warranty: 1 year, performance part: yes, universal fitment: no, oe/oem part number: 20741, position on the vehicle: front, oe spec or performance/custom: oe spec, fan type: if, regulator: ir, replacement type: direct replacement,
category: auto parts > car truck parts accessories > starters, alternators, ecus wiring > alternators generators, material: metal/aluminum, sku: 19086537594244853,
4umotor 12725491 Is Similar To:
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1 offer $125.83 USD
  • New. Offer #1 priced at $125.83 + $0.00 shipping estimate = $125.83* total. Fitment: Mercedes-Benz CLA250 C117/C118 2014-2019 L4 2.0L Mercedes-Benz GLA250 2015-2020 L4 2.0L Package Include: 1 Alternator Product Information: Product Condition: New Product Type: Alternator Product Included: 1 Alternator Product Color: As Shown Product Installation: Direct Replacement Product Material: Aluminum Product Pulley Included: Yes Product Mounting Hardware Included: No How To Replace an Alternator.FREE SHIPPING

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