2020 Mercedes-Benz SL550 Alternators and Starters

Essential Alternators and Starters for 2020 Mercedes-Benz SL550s

Bosch – Alternator: Remanufactured, 180 Amps (Part No.AL0844X)

Alternator: Remanufactured, 180 Amps

from

$402.99
Bosch Premium Alternators are designed, built and tested to provide the ultimate in performance and reliability.

Product Features:
  • Full-load tested to guarantee compliance with Bosch’s strict performance specifications
  • 100% factory tested, units are remanufactured (not rebuilt)
  • Built to last – uses high quality materials and the most technologically advanced developments.
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Carquest Professional – Alternator: New, 180 Amps (Part No.11220AN)

Alternator: New, 180 Amps

from

$707.99
Carquest Professional alternators are 100% new units that are built to meet or exceed original equipment (O.E.) specifications. Our new alternators are engineered and built by an IATF/TS 16949 certified supplier that meets the highest standards achievable. Carquest Professional alternators are re-engineered to include improvements and enhancements (where applicable) to the OE design to extend longevity and service life. Our new alternators are built with all new components and are 100% triple tested to ensure high quality that is backed by an industry-leading warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:
  • Designed to meet or exceed OE specifications for fit, form and function
  • Manufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
  • All new components are utilized to ensure long service life
  • Housings are 100% new with dimensions computer gauged and measured to ensure proper fitment
  • Internal electronics are upgraded for heavy duty reliability (where applicable)
  • Regulators and rectifiers are 100% electronically load tested for reliable charging performance
  • Application-specific technical bulletins included where applicable
  • All units are 100% triple tested to ensure quality and performance
  • Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
  • Rotors and stators are load tested and double insulated for maximum charging performance
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Valeo – Alternator, New (Part No.F4000934766VAL)

Alternator, New

from

$731.34
Valeo manufactures a 100% New Alternator that is a direct fit OEM quality replacement.

Product Features:
  • OEM-Quality Direct Fit Application.
  • 100% new quality components.
  • Fully tested to meet OE specifications.
  • Utilizes the latest OE technology.
  • Provides exceptional reliability.
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Carquest Premium – Alternator: Remanufactured, 180 Amps (Part No.11220A)

Alternator: Remanufactured, 180 Amps

from

$286.99
Carquest Premium alternators are premium constructed, original equipment (O.E.) replacement parts with industry-leading warranties. Our Carquest Premium alternators are designed to meet or exceed OE specifications for fit, form and function. Our alternators are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.
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Bosch – Professional Preferred Alternator, Remanufactured (Part No.F4000319905BOS)

Professional Preferred Alternator, Remanufactured

from

$578.21
Bosch has been a major supplier of new alternators and starters to OE vehicle manufacturers since 1913. Securing OE certification requires strict adherence to stringent precision and performance criteria. These same exacting criteria are also applied in the manufacturing of all Bosch aftermarket alternators and starters. Whether 100% remanufactured or new, Bosch Premium Alternators and Starters are quality built and 100% factory tested to ensure years of reliable performance, even under the most extreme operating conditions. That’s why they are preferred by more professional installers.

Product Features:
  • Built to last using the highest quality materials and the most technologically advanced manufacturing processes
  • Remanufactured using more new parts than any other unit
  • 100% exhaustive multipoint quality and performance testing throughout the remanufacturing process ensures optimum starting and charging performance under all operating conditions
  • Every unit is full-load tested to guarantee compliance with Bosch strict performance specifications
  • Voltage regulator 100% tested for OE voltage specifications (new on GM and Ford)
  • Rectifier 100 % tested (new on Ford)
  • Diodes 100% tested (replaced with new as required)
  • Rotor 100% performance-tested for maximum electrical output
  • 100% new long life sealed bearings with special high load, high temperature grease
  • Stator 100% insulation and phase balance tested
  • Slip rings 100% new or remachined to +/- .05mm, the tightest tolerance in the industry
  • 100% new long life self-lubricating brushes
  • 100% new clutch pulleys
  • All terminals, insulators and hardware provided
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WAI – Alternator: New, 180 Amps (Part No.11220N)

Alternator: New, 180 Amps

from

$385.99
WAI is a leading parts manufacturer for the aftermarket. You’ll find superior quality and performance on all WAI 100% new alternators and starters as well as generators, motors, voltage regulators, rectifiers and other components.
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Bosch – Alternator: New, 180 Amps (Part No.AL0844N)

Alternator: New, 180 Amps

from

$658.99
Bosch Premium Alternators are designed, built and tested to provide the ultimate in performance and reliability.

Product Features:
  • 100% new components withstand the harshest environments for the best performance and longest life
  • Built specifically to withstand excessive heat and high electrical demands.
  • All mounting points 100% gauged and resized or rethreaded for proper fit
  • Free 24-hour Roadside Assistance Protection with purchase of any Bosch Alternator
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Carquest Premium – Alternator: Remanufactured, 180 Amps (Part No.11808A)

Alternator: Remanufactured, 180 Amps

from

$501.99
Carquest Premium alternators are premium constructed, original equipment (O.E.) replacement parts with industry-leading warranties. Our Carquest Premium alternators are designed to meet or exceed OE specifications for fit, form and function. Our alternators are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.
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Bosch – Remanufactured Starter (Part No.SR0505X)

Remanufactured Starter

from

$929.99
Bosch Premium Starters are designed, built and tested to provide the ultimate in performance and reliability.
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WAI – 1.4kW/12 Volt, CW, 10-Tooth Pinion (Part No.19050N)

1.4kW/12 Volt, CW, 10-Tooth Pinion

from

$312.99
WAI is a leading parts manufacturer for the aftermarket. You’ll find superior quality and performance on all WAI 100% new alternators and starters as well as generators, motors, voltage regulators, rectifiers and other components.

Product Features:
  • Engineered to meet or exceed OEM specifications for a perfect fit and hassle-free installation.
  • Premium grade solenoids contains materials specifically selected for best conductivity. High temperature cap ensures that the solenoid works flawlessly in high heat environments. High dielectric strenght outer case resists shorting.
  • Armatures have precision machined and upgraded steel shaft for improved durability and performance.
  • Each unit includes a printed copy of the test results so you know exactly what to expect from our parts right from the first time they power on.
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Carquest Premium – Starter Remanufactured Premium (Part No.19054S)

Starter Remanufactured Premium

from

$233.99
Carquest Premium starters are premium constructed, original equipment (O.E.) replacement parts with industry-leading warranties. Our Carquest Premium starters are designed to meet or exceed OE specifications for fit, form and function. Our starters are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and needle bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:
  • Designed to meet or exceed OE specifications for fit, form and function
  • Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
  • 100% remanufactured drive clutch assembly ensures lasting performance
  • Armatures and commutators are 100% load tested
  • New motor lead terminals and solenoid contacts are used to ensure maximum connectivity
  • Application-specific technical bulletins included where applicable
  • All units are 100% triple tested to ensure quality and performance
  • Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
See More

Carquest Premium – Starter Remanufactured Premium (Part No.19050S)

Starter Remanufactured Premium

from

$65.00
Carquest Premium starters are premium constructed, original equipment (O.E.) replacement parts with industry-leading warranties. Our Carquest Premium starters are designed to meet or exceed OE specifications for fit, form and function. Our starters are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and needle bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.
See More

Bosch – Professional Preferred Starter, Remanufactured (Part No.F5000425425BOS)

Professional Preferred Starter, Remanufactured

from

$307.52
Bosch has been a major supplier of new alternators and starters to OE vehicle manufacturers since 1913. Securing OE certification requires strict adherence to stringent precision and performance criteria. These same exacting criteria are also applied in the manufacturing of all Bosch aftermarket alternators and starters. Whether 100% remanufactured or new, Bosch Premium Alternators and Starters are quality built and 100% factory tested to ensure years of reliable performance, even under the most extreme operating conditions. That’s why they are preferred by more professional installers.

Product Features:
  • Built to last using the highest quality materials and the most technologically advanced manufacturing processes
  • Remanufactured using more new parts than any other unit
  • 100% exhaustive multipoint quality and performance testing throughout the remanufacturing process ensures optimum starting and charging performance under all operating conditions
  • Every unit is full-load tested to guarantee compliance with Bosch strict performance specifications
  • Solenoid with 100% new terminal hardware, contact face and high temperature cap, are completely disassembled and computer performance tested for pull/hold strength
  • 100% new long life self-lubricating brushes
  • Gear train all new bushings
  • Drive with 100% new bushings, springs, rollers, washers caps and high temperature lubrication
  • Gear train lubricated with OE-specified grease providing protection from – 4 0 ?F to +3 02 ?F
  • Commutator remachined to Bosch tight tolerances
  • Permanent magnets/field coils tested for field strength and shorts (replaced with new as required)
  • Armature continuity tested, gauged, straightened and shimmed
  • All electrical connections resoldered
  • All shaft splines and load bearing surfaces lubricated with OE high temperature grade
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OE+ – Starter (Part No.F50002246772IAP)

Starter

from

$407.33
Starter

Bosch – Premium 100% Remanufactured Starter (Part No.SR0827X)

Premium 100% Remanufactured Starter

from

$258.99
Bosch Premium Starters are designed, built and tested to provide the ultimate in performance and reliability.

Product Features:
  • Built for extremes! Our new and reman starters and alternators are 100% factory tested to ensure reliable performance, under extremes of heat, cold and high demand
  • Our new and reman starters and alternators are designed to perform equal to or better than the original equipment parts, that they replace
  • Our new and reman starters and alternators are designed to be identical in fit and performance to original equipment parts
  • Our new and reman starters and alternators utilize the latest manufacturing technologies and highest quality parts to ensure the best performance and longest life
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Bosch – Starter (Part No.F50001332470BOS)

Starter

from

$810.76
Starter

Carquest Premium – Starter Remanufactured Premium (Part No.52080S)

Starter Remanufactured Premium

from

$153.99
Carquest Premium starters are premium constructed, original equipment (O.E.) replacement parts with industry-leading warranties. Our Carquest Premium starters are designed to meet or exceed OE specifications for fit, form and function. Our starters are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and needle bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:
  • Designed to meet or exceed OE specifications for fit, form and function
  • Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
  • 100% remanufactured drive clutch assembly ensures lasting performance
  • Armatures and commutators are 100% load tested
  • New motor lead terminals and solenoid contacts are used to ensure maximum connectivity
  • Application-specific technical bulletins included where applicable
  • All units are 100% triple tested to ensure quality and performance
  • Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
See More

Bosch – New Starter (Part No.SR0505N)

New Starter

from

$794.99
Bosch Premium Starters are designed, built and tested to provide the ultimate in performance and reliability.
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Upgrade your 2020 Mercedes-Benz SL550 with Top-Quality Alternators and Starters

When it comes to maintaining or upgrading your 2020 Mercedes-Benz SL550, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Mercedes-Benz or enhancing its overall performance, Alternators and Starters are key to keeping your SL550 functioning at its best. At Advance Auto Parts, we offer a wide selection of 6 Alternators and Starters for the 2020 Mercedes-Benz SL550, designed to meet your needs without breaking the bank. From Alternator Part replacements to Starter Parts upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.

Affordable Prices and Wide Selection

Shopping for Alternators and Starters for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Alternators and Starters for your 2020 Mercedes-Benz SL550 at great prices. Our Alternators and Starters inventory for this model ranges from just $153.99 to $929.99, with an average price of $653.84. Our 6 Alternators and Starters in stock come from 3 trusted brands, so you’re sure to find the right part for your 2020 Mercedes-Benz SL550 without overspending.

Explore Related Parts and More

While you’re here, don’t forget to check out other essential categories that go hand in hand with Alternators and Starter upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants and more to make sure your 2020 Mercedes-Benz SL550 is always ready to roll. We’re committed to providing you with everything you need to keep your SL550 in top shape, all in one place. Start shopping confidently below for your 2020 Mercedes-Benz SL550!

Best-Selling Alternator Parts for 2020 Mercedes-Benz SL550s

Enhance the driving experience in your Mercedes-Benz with 2 quality Alternator Part components, starting at $501.99.

Valeo – Alternator, New (Part No.F4000934766VAL)

Alternator, New

from

$731.34
Valeo manufactures a 100% New Alternator that is a direct fit OEM quality replacement.

Product Features:
  • OEM-Quality Direct Fit Application.
  • 100% new quality components.
  • Fully tested to meet OE specifications.
  • Utilizes the latest OE technology.
  • Provides exceptional reliability.
See More

Carquest Premium – Alternator: Remanufactured, 180 Amps (Part No.11808A)

Alternator: Remanufactured, 180 Amps

from

$501.99
Carquest Premium alternators are premium constructed, original equipment (O.E.) replacement parts with industry-leading warranties. Our Carquest Premium alternators are designed to meet or exceed OE specifications for fit, form and function. Our alternators are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.
See More

Most Popular 2020 Mercedes-Benz SL550 Starter Parts

Customize your Mercedes-Benz with 4 Starter Parts products like Starters, all priced under $929.99.

Bosch – Remanufactured Starter (Part No.SR0505X)

Remanufactured Starter

from

$929.99
Bosch Premium Starters are designed, built and tested to provide the ultimate in performance and reliability.
See More

Bosch – Starter (Part No.F50001332470BOS)

Starter

from

$810.76
Starter

Bosch – New Starter (Part No.SR0505N)

New Starter

from

$794.99
Bosch Premium Starters are designed, built and tested to provide the ultimate in performance and reliability.
See More

Carquest Premium – Starter Remanufactured Premium (Part No.52080S)

Starter Remanufactured Premium

from

$153.99
Carquest Premium starters are premium constructed, original equipment (O.E.) replacement parts with industry-leading warranties. Our Carquest Premium starters are designed to meet or exceed OE specifications for fit, form and function. Our starters are remanufactured by an IATF/TS 16949 certified supplier that meets the highest standards achievable. We replace all wear components (brushes, bushings and needle bearings) with new components to ensure long-life. All critical components are electronically tested during assembly and the entire unit is 100% tested, ensuring proper performance backed by an industry-leading warranty. We also offer technical support at 1-800-228-9672 for product questions, diagnostic troubleshooting and installation assistance by ASE Certified Technicians.

Product Features:
  • Designed to meet or exceed OE specifications for fit, form and function
  • Remanufactured by an IATF/TS 16949 supplier that meets or exceeds the highest standards in the industry
  • 100% remanufactured drive clutch assembly ensures lasting performance
  • Armatures and commutators are 100% load tested
  • New motor lead terminals and solenoid contacts are used to ensure maximum connectivity
  • Application-specific technical bulletins included where applicable
  • All units are 100% triple tested to ensure quality and performance
  • Technical support team staffed with ASE Certified Technicians: 1-800-228-9672
See More

FAQs for 2020 Mercedes-Benz SL550 Alternators and Starters

Which Alternators and Starters are best-sellers for 2020 Mercedes-Benz SL550s?

Out of 6 Alternators and Starters that fit 2020 Mercedes-Benz SL550s, the following parts are the top sellers:

What’s the price range for 2020 Mercedes-Benz SL550 Alternators and Starters?

Alternators and Starter prices for the 2020 Mercedes-Benz SL550 start at $153.99 and go up to $929.99 for the most premium parts.

What’s the average price of a Alternators and Starter for a 2020 Mercedes-Benz SL550?

The average price for Alternators and Starters for the 2020 Mercedes-Benz SL550 is $653.84. Keep in mind the variety of part types within our Alternators and Starter category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Alternators and Starters for other Mercedes-Benz SL550 model years?

Yes, we currently carry Alternators and Starters for 12 model years of Mercedes-Benz SL550s between 2007 and 2019. Alternators and Starters are bought most frequently for the following model years: 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2012, and 2011.

What are the cheapest Alternators and Starters for my 2020 Mercedes-Benz SL550?

The cheapest 2020 Mercedes-Benz SL550 Alternators and Starters we carry in stock are:

What types of Alternators and Starters do you sell for my 2020 Mercedes-Benz SL550?

As of 2/5/25, these are some of the most in-demand types of Alternators and Starters for a 2020 Mercedes-Benz SL550:

Can I get help with 2020 Mercedes-Benz SL550 Alternators and Starter orders?

Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Mercedes-Benz Alternators and Starters and more.

What is your return policy for Mercedes-Benz SL550 Alternators and Starters?

Advance Auto Parts keeps returns simple. For new Mercedes-Benz SL550 Alternators and Starters and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.