Alternator for Mercedes-Benz 5.0L CL, CLK, E, G, S Class 2002-2009 400-24120
Alternator for Mercedes-Benz 5.0L CL, CLK, E, G, S Class 2002-2009 400-24120

Alternator for Mercedes-Benz 5.0L CL, CLK, E, G, S Class 2002-2009 400-24120

Item #: 400-24120

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Highly engineered alternators for Mercedes Benz deliver excellence in performance.
  • Built to Beat the Heat: High temperature epoxy and high temperature grease withstand extreme heat
  • Heavy-duty rectifiers and high-quality regulators enhance superior charging performance
  • Most alternators are supplied with final test results and performance curve
  • Direct-fit replacement and easy installation made possible with OEM fitment specifications
  • Factory direct, money-saving alternator typically priced substantially less than OEM counterparts
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  • Product Info
  • Applications List
  • Part Replacement List
  • Policy Information
  • Reviews

Overview

DB Electrical Alternators for Mercedes Benz
DB Electrical offers premium-quality alternators that deliver high-performance for Mercedes Benz cars. Owners of these cars appreciate the highly engineered quality of DB Electrical alternators for flawless mechanical performance and longevity. Mercedes Benz is a legendary European luxury car known for its superb performance and distinguished appearance. A DB Electrical alternator is a great choice for keeping your Mercedes Benz on the road. (Check our applications table below for specific makes and models for this alternator.)

With DB Electrical alternators, you’ll get …

  • Superior Quality Every Time – Our aftermarket alternators deliver performance that’s equivalent to the original.
  • Direct-Fit OEM Replacement Parts – DB Electrical aftermarket alternators are designed for perfect fitment to replace the ones that originally came with your vehicle.
  • Engineer-Tested Excellence – Our alternators go through a rigorous testing program to ensure optimal performance. Most alternators are supplied with their final test results and performance curve.

Reasons to choose DB Electrical for your next alternator:

  • Built to Take the Heat – Most DB Electrical alternators offer high-temperature epoxy, heavy-duty rectifiers, high-quality regulators, top-quality bearings and high-temperature grease produce better charging and longer life under high-heat environments.
  • Brand New Alternator – Never settle for a secondhand one. Many places will try to sell you a used alternator for about the price we’ll sell you a new one.

The DB Electrical Advantage – Factory-Direct Pricing and 1-Year Warranty
DB Electrical sells its exceptional-quality electrical components at low factory-direct prices. DB Electrical delivers exceptional value for products that we stand behind with our total-confidence 1-year warranty. Yes, you have a full year to make sure your alternator meets your expectations.

Item Number: 400-24120

100% Brand New Aftermarket Part From DB Electrical

Product Specs

Item ConditionAftermarket Part
Unit TypeAlternator
Voltage12
RotationCW
Amperage150
Pulley ClassS6
RegulatorIR
Fan TypeIF
FitsMERCEDES 3.7L, 4.3L, 5.0L 2002-2006
6-GROOVE PULLEY 50mm OD

Applications List

Select Make & Type
MAKE TYPE MODEL YEAR ENGINE
MERCEDES-BENZAuto and Light TruckCL50020025.0L
MERCEDES-BENZAuto and Light TruckCL50020035.0L
MERCEDES-BENZAuto and Light TruckCL50020045.0L
MERCEDES-BENZAuto and Light TruckCL50020055.0L
MERCEDES-BENZAuto and Light TruckCL50020065.0L
MERCEDES-BENZAuto and Light TruckCLK43020024.3L
MERCEDES-BENZAuto and Light TruckCLK43020034.3L
MERCEDES-BENZAuto and Light TruckCLS50020065.0L
MERCEDES-BENZAuto and Light TruckE32020033.2L
MERCEDES-BENZAuto and Light TruckE32020043.2L
MERCEDES-BENZAuto and Light TruckE32020053.2L
MERCEDES-BENZAuto and Light TruckE32020053.2L (Diesel)
MERCEDES-BENZAuto and Light TruckE43020024.3L
MERCEDES-BENZAuto and Light TruckE50020035.0L
MERCEDES-BENZAuto and Light TruckE50020045.0L
MERCEDES-BENZAuto and Light TruckE50020055.0L
MERCEDES-BENZAuto and Light TruckE50020065.0L
MERCEDES-BENZAuto and Light TruckE55 AMG20025.5L
MERCEDES-BENZAuto and Light TruckG50020035.0L
MERCEDES-BENZAuto and Light TruckG50020045.0L
MERCEDES-BENZAuto and Light TruckG50020055.0L
MERCEDES-BENZAuto and Light TruckG50020065.0L
MERCEDES-BENZAuto and Light TruckG50020075.0L
MERCEDES-BENZAuto and Light TruckG50020085.0L
MERCEDES-BENZAuto and Light TruckG55 AMG20035.5L
MERCEDES-BENZAuto and Light TruckG55 AMG20045.5L
MERCEDES-BENZAuto and Light TruckG55 AMG20055.5L
MERCEDES-BENZAuto and Light TruckG55 AMG20065.5L
MERCEDES-BENZAuto and Light TruckS35020063.7L
MERCEDES-BENZAuto and Light TruckS43020024.3L
MERCEDES-BENZAuto and Light TruckS43020034.3L
MERCEDES-BENZAuto and Light TruckS43020044.3L
MERCEDES-BENZAuto and Light TruckS43020054.3L
MERCEDES-BENZAuto and Light TruckS43020064.3L
MERCEDES-BENZAuto and Light TruckS50020025.0L
MERCEDES-BENZAuto and Light TruckS50020035.0L
MERCEDES-BENZAuto and Light TruckS50020045.0L
MERCEDES-BENZAuto and Light TruckS50020055.0L
MERCEDES-BENZAuto and Light TruckS50020065.0L
MERCEDES-BENZAuto and Light TruckSL50020025.0L
MERCEDES-BENZAuto and Light TruckSL50020035.0L
MERCEDES-BENZAuto and Light TruckSL50020045.0L
MERCEDES-BENZAuto and Light TruckSL50020055.0L
MERCEDES-BENZAuto and Light TruckSL50020065.0L
MERCEDES-BENZAuto and Light TruckSLR MCLAREN20055.5L
MERCEDES-BENZAuto and Light TruckSLR MCLAREN20065.5L
MERCEDES-BENZAuto and Light TruckSLR MCLAREN20075.5L
MERCEDES-BENZAuto and Light TruckSLR MCLAREN20085.5L
MERCEDES-BENZAuto and Light TruckSLR MCLAREN20095.5L

Replaces These Part Numbers

ANDRE NIERMANN02615012
ARROWHEADABO0250, 400-24120
BOSCH0-124-615-012, 0-124-615-020, 0-124-615-044, 0-124-615-047, 0-124-615-049
DIXIEA-6435, A-6511
J&N Electrical Products400-24120
LESTER13953
LUCAS ELECTRICAL EUROPELRA02294
MERCEDES BENZ012-154-13-02, 013-154-82-02, 013-154-86-02, 014-154-01-02, 463-150-01-50
NAPA POWER PREMIUM PLUS213-9587
NAPA POWER SUPREME13-9587
PIC220-5053, 220-5053A, 220-5139
REMY LIGHT DUTY12432, 12472
USA INDUSTRIESA2850
WILSON NEW90-15-6476
WILSON90-15-6476
WOOD AUTOALT10344

Frequently Asked Questions

Q: Do I need a larger charge wire for a High Output unit?
A: The high amp unit will operate better than stock, but not to its full potential without a larger charge wire. It’s the same reason firetrucks do not use garden hoses. It is IMPARATIVE to have proper charge and ground cables.

Q: Does a High Amp unit cause any damage to my battery or my vehicles charging system?
A: As long as it is installed properly with battery in good condition, then no. A High Output unit works exactly like a factory unit and only produces what is being demanded. No alternator works continuously at full output. Higher amperage is not bad and will not hurt a battery, but high voltage will blow one up.

Q: Will aftermarket underdrive pulleys (crankshaft power pulley) have any effect on my alternator?
A: Yes, underdrive crankshaft pulleys slow all the components (power steering, a/c, and alternator) to provide more power to the rear wheels. In some cases, the charging systems will fall totally on the battery at idle and completely stop charging.

Q: Where is the best place to get a voltage reading of the alternator output?
A: You’ll get the most accurate voltage reading from the back of the alternator at the main charge post that runs directly to the battery. This must be done while the vehicle is running.

Q: Why is the pulley on a high amp alternator smaller than my stock pulley?
A: The smaller pulley advances the power curve of the alternator just slightly, which produces a little more amperage around the idle if needed.

Q: Will I need a smaller belt for my high amp unit?
A: This varies by application because not all belts and belt tensioners are in the same condition. The tensioner will always tell you if you need a new belt or not. If it’s in range, you will not. If it is out, you will. Generally, you will need a belt that is one inch shorter than stock. You should have no problem finding a replacement wherever you buy your parts. V belt applications simply re-adjust your belt tensions to 3/8” deflection.

Q: What is the difference between a one wire, self-exciting and a self-energizing regulator?
A: Nothing. They are all exactly the same. Different manufacturers use different terms for marketing. The only wire to hook up is the charge wire to the battery. This does require modification for the alternator charge light on the dash.

Q: My stock unit used a five-groove pulley, and you sent my high amp alternator with a 6 groove. Why and what can I do?
A: 5 groove overdrive pullies are not produced. Install the belt on the back groove of the pulley closest to the fan or body of the alternator. The fan is internal, and this application will work just fine.

Q: Can your alternator be run in dual or triple alternator applications?
A: Yes. When wired and mounted correctly, the alternator can run in either dual or triple applications.

Q: Will I need a new battery with a high amp alternator?
A: If your battery is in good condition, and in spec of its OEM rating, then no. Your battery should work equally well with either the OEM and a High Amp unit.

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