2003 Mercedes-Benz E320 Alternators

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.

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
• Regulators and rectifiers are 100% electronically load tested for reliable charging performance
• 100% new OE-quality brushes and bearings are used to ensure long service life
• Rotors and stators are load tested and double insulated for maximum charging performance
• Slip rings are precision polished for maximum brush contact and service life
• 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

The Bosch Premium Alternator, delivering 120 amps and operating at 12 VDC with a clockwise rotation, is engineered for peak performance and reliability. This remanufactured unit undergoes 100% factory testing and full-load evaluations to meet Bosch’s stringent performance standards, ensuring dependable operation in demanding conditions. Built with high-quality materials and advanced technology, it offers exceptional durability and long-lasting service life. Whether you’re replacing a worn-out alternator or upgrading for better performance, this alternator is designed to handle the job with ease. Trust Bosch’s expertise for a reliable power source that keeps your vehicle running smoothly.

Product Features:

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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.
• Designed for demanding conditions, ensuring reliable operation and consistent performance in various environments.
• Offers exceptional durability and long-lasting service life, making it a dependable choice for extended use.

The Bosch Premium Alternator delivers exceptional performance and reliability, making it a top choice for your vehicle’s electrical system. With a robust 150-amp output and 12 VDC voltage, this alternator ensures consistent power delivery for demanding applications. It features a clockwise rotation direction and is meticulously remanufactured – not rebuilt – to meet Bosch’s stringent performance standards. Each unit undergoes full-load and 100% factory testing, guaranteeing compliance with the highest quality benchmarks. Built with premium materials and advanced technology, this alternator is engineered for long-lasting durability and dependable operation. Whether you’re replacing a worn-out unit or upgrading, this alternator offers unmatched value and peace of mind.

Product Features:

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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.
• Delivers consistent 150-amp power output, ideal for supporting demanding electrical applications.
• Engineered with a clockwise rotation direction for seamless compatibility with specific vehicle systems.

Valeo’s 120 Amp alternator is a premium solution designed to deliver exceptional performance and reliability. Built with 100% new components, this alternator eliminates the risks associated with remanufactured units, ensuring long-lasting durability. Engineered with application-specific parts for a precise fit, it features premium rare earth magnets that enhance output efficiency without increasing size. Tested under extreme conditions for up to six months, it guarantees reliable operation even in the harshest environments. With high resistance to heat, vibration, and contaminants, this alternator maintains maximum charge output to meet demanding electrical needs. Operating at 12 VDC with a clockwise rotation, it is the original equipment part (Part Number 439307) now available in the aftermarket, offering the same trusted quality as the factory-installed version. Ideal for boosting fuel economy and eliminating voltage drops, this Valeo alternator is a top-tier choice for those seeking innovation and performance.

Product Features:

• Valeo premium alternators are 100% new products (not remanufactured)
• 100% new components and core eliminates premature failure for increased durability over remanufactured units
• All parts are application specific for an exact fit
• Premium rare earth magnets increase the output of the alternator without increasing the size for better efficiency
• All applications go under extreme condition testing up to 6 months to ensure reliability under the harshest conditions and electrical demands
• High resistance to heat, vibration, and contaminating particles helps maintain maximum charge output
• Part Number 439307 is the original equipment part now available in the aftermarket.