Mercedes-Benz E420 Alternators and Starters

National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:

• BUILT TO LAST — Advanced heat treatment process for strength
• PREMIUM MATERIALS — Precision manufactured using premium-grade steel for lasting performance and extended bearing life
• RELIABLE PERFORMANCE — Element size and quantity are engineered to meet or exceed the load rating of OE bearings
• COMPREHENSIVE COVERAGE — Industry-leading coverage for domestic and import applications
• RIGOROUS TESTING — Comprehensive testing throughout design and development processes by National engineers for quality you can count on

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 strength 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.

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

The Bosch Premium Alternator delivers exceptional performance and reliability, making it a top choice for your vehicle’s electrical system. With a robust 115-amp output and 12 VDC voltage, this alternator ensures consistent power delivery for demanding applications. Engineered with high-quality materials and cutting-edge technology, it is built to last and withstand rigorous use. Its clockwise rotation direction aligns seamlessly with compatible systems, while full-load testing guarantees adherence to Bosch’s strict performance standards. Unlike rebuilt units, this alternator is 100% factory-tested and remanufactured for superior quality and dependability. Whether you’re upgrading or replacing, this alternator offers unmatched durability and value, ensuring your vehicle stays powered and reliable.

Product Features:

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.
• Provides consistent 115-amp output to support demanding electrical applications.
• Designed for seamless integration with systems requiring clockwise rotation direction.

Carquest Premium alternators are premium constructed, original equipment (O.E.) replacement parts with industry-leading limited 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 limited 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:

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

This 115-amp alternator from WAI is a top-tier choice for those seeking reliability and performance. Engineered to meet or exceed OEM specifications, it ensures a perfect fit and hassle-free installation. Its advanced voltage regulator protection shields against transient voltage spikes, safeguarding your battery and ensuring seamless communication with the ECU. The low saturation voltage minimizes heat dissipation, enhancing durability and efficiency. Featuring a high-power rectifier assembly with open junction press-fit diodes, this alternator is designed to run cooler and last longer. Each unit is rigorously tested, and a printed copy of the test results is included, giving you confidence in its performance from the moment it powers on. Built for superior quality and durability, this alternator is an excellent investment for dependable vehicle operation.

Product Features:

• Engineered to meet or exceed OEM specifications for a perfect fit and hassle-free installation.
• Voltage regulator protection – load dump protected against transient voltage spikes avoiding potential battery damage. Low saturation voltage results in lower heat dissipation. Fully compliant in communication with ECU.
• High power rectifier assembly is designed with higher power open junction press fit diodes to keep the units running cool.
• 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.
• Rigorously tested for durability and efficiency, ensuring long-lasting performance and reliability in demanding conditions.

Carquest Premium alternators are premium constructed, original equipment (O.E.) replacement parts with industry-leading limited 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 limited 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:

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