Alternator – 6421540402OE (180 A) | Mercedes Sprinter High-Output Charging System

SKU: 6421540402OE - qty 1

Keep your Mercedes Sprinter’s electrical system strong and reliable with this Alternator – part #6421540402OE, a 180 amp high-output alternator designed for Sprinter vans with the diesel OM642 engine. This alternator provides robust charging power to support the vehicle’s electrical demands — from headlights and HVAC to onboard electronics and accessories — especially under heavy load. A properly functioning alternator is critical to battery health, engine starting reliability, and stable electrical performance. When the alternator begins to fail, you might notice dim lights, quick battery drain, slow cranking, or warning lights on the dash. Replacing it with the correct OEM-style unit restores dependable charging and helps prevent unexpected breakdowns. 

✔ OEM-Equivalent 180 Amp Alternator

• Designed to match Mercedes-Benz part 6421540402 / A6421540402 for correct fitment on many Sprinter 2500/3500 models equipped with the 3.0 L OM642 diesel engine. 

• This alternator includes the built-in voltage regulator and 7-groove pulley required for proper belt drive integration. 

✔ High Output for Heavy Electrical Loads

• With 180 amps of charging output, this alternator delivers ample current for demanding electrical systems — ideal for Sprinters with auxiliary lighting, power accessories, or aftermarket electronics. 

• Helps ensure the battery stays fully charged and the electrical system stays stable under load.

✔ New Replacement (OEM-Style)

• Fits Sprinter vehicles where a 180 amp alternator is specified (versus lower output units). 

• Direct replacement for OE alternators used on many Sprinter models — just match part number and pulleys. 

📌 Fitment Tip: Some Sprinter models use a 220 amp alternator when equipped with additional A/C components or high electrical loads — verify your original alternator’s part number (6421540402) and output before replacing.