VALEO 439843 alternator for the 2017 Mercedes-Benz Maybach S550 V8 4.7L and other vehicles charges the battery while the engine runs. It is a 100% new alternator, built with new components and core.
A dim headlight, a battery warning light or a battery that keeps going flat can mean the alternator is worn, though a slipping belt or a tired battery can also produce them, so find the cause before replacing the alternator.
It fits the 2017 Mercedes-Benz Maybach S550 V8 4.7L and the 2014-2017 Mercedes-Benz S550 V8 4.7L, and either car takes a single alternator.
Fit and size
Build and materials
Interchange: 11739 · 10335 · 0009060304 · 000906030480 · 9060304 · 906030480
This part cross-references / interchanges with the following part numbers:
Is this a Mercedes S550 alternator for the 2014-2017 Mercedes-Benz S550 V8 4.7L?
Yes. VALEO 439843 fits the 2014-2017 Mercedes-Benz S550 V8 4.7L, and that car takes one alternator.
How many amps is this VALEO alternator rated for?
VALEO 439843 is rated at 250 amps on a 12-volt DC system.
How many grooves does this alternator pulley have?
The pulley has 6 grooves, and the alternator turns clockwise. The fan is internal.
Can a dim headlight or a battery warning light point to a worn alternator?
Yes, they can be signs of a worn alternator, as can a battery that keeps going flat. A shop can test the charging system on the car.
How is the 439843 alternator tested?
Every application goes through extreme-condition testing for up to 6 months for reliability. The alternator also resists heat, vibration and contaminating particles to help maintain charge output.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.