Alternator: Mercedes vs Valeo ?

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cinqetoiles
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I plan to replace the alternator from my G320 CDI (2007).

The G has 115.000 km, and I do not want to have a broken down alternator in the middle of a desert. Taking a spare with me is no option: too bulky, and not practical to do the exchange in the middle of nowhere. 

The "original / genuine Mercedes" is priced at around 1.000 EUR

On the other hand, you can find plenty of new alternators at around 300 EUR. Eg: 

https://www.buycarparts.co.uk/mercedes-benz/g-class-w463/20072/10450/alternator?brand[0]=21

Those are new items (no part exchange) and are manufactured by VALEO (same make as the one from Mercedes). 

So, where lies the difference ? Why pay 1.000 EUR when you can have the same for 300 EUR? Or is it not quite the same ?

 

 

LEONIDAS
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Re: Alternator: Mercedes vs Valeo ?

I have used Valeo  (90 Amp) in my boat  to charge   3 batteries of a total 470 Ah capacity split in 1x110 and 2 x180 Ah banks via a split diode. and I am  very happy with it. You will need to ensure that the pulley used matches the optimum performance of the alternator which is rpm sensitive. On the other hand, why not have your original alternator serviced by a makers approved workshop? I may be wrong, but Bosch service might be the ones to go for??

cinqetoiles
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Re: Alternator: Mercedes vs Valeo ?

Thanks, I will ask a quote for a refurbishment of the original alternator. Based on previous experiences of refurbishments, I fear this may cost more than one of those new 300 EUR alternators! Or at least very close. Those 300 EUR alternators use the same size of pulley as the original ones. They are listed as a direct replacement for the original A642 154 05 02. So, why pay 1.000 EUR instead of 300 EUR. Or is this risky ? 

JASONGDS
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Re: Alternator: Mercedes vs Valeo ?

Does your alternator have a snorkel on it? Almost certainly the 300 euro one won't. mines packed in after 25 years, but was only brush pack. I would take a spare from a 320 E class, 2nd hand, won't break if you have a spare!

LEONIDAS
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Re: Alternator: Mercedes vs Valeo ?

Modern alternators are fairly  robust. Refurbishment usually means cleaning the rotor and replacing the bearings and the voltage regulator tested for cutting in and out and occasionally replacing it. It shouldn't cost the earth. As mentioned, it is a good practice to  ensure that the snorkel is put back for increased protection  of the electronic part of the alternator when driving in wet conditions  or wading. 

panzer
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Re: Alternator: Mercedes vs Valeo ?

Get your original overhauled - new bearings brushes etc etc should come back like new for a fraction of E1000.00

Just had my 460 one done after at least 14 years service for just £80

cinqetoiles
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Re: Alternator: Mercedes vs Valeo ?

Thanks for your convergent advices: I will go for a refurbishment. At least I will be sure of what I get: a genuine Mercedes alternator. But finding a trustworthy refurbisher is not easy here in Belgium: four quotations asked... zero answer :-(

 

g wagon g
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Re: Alternator: Mercedes vs Valeo ?

Take some tools and a spare brush pack. It wont take up much space. If your alternator is working fine just go as it is. I bet it wont fail

You could take some bearings too but they dont usually fail unless under water a lot

If you get it re conditioned make sure they fit quality bearings and a genuine brush pack. Lots fit cheap stuff and thats why i say use the original and hope it does fine

                 Gaz

cinqetoiles
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Re: Alternator: Mercedes vs Valeo ?

Thanks ! I will make sure they use the genuine brush pack, and quality bearings. And only a company with outstanding reputation will touch my alternator. 

g wagon g
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Re: Alternator: Mercedes vs Valeo ?

Its a bit more money but worth it

I did not study but is your vehicle manual or auto

If its auto take a starter motor solenoid

You never know

Have a fun trip

             g

 

cinqetoiles
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Re: Alternator: Mercedes vs Valeo ?

It is a G320 CDI, automatic. Thanks for your advice about the solenoid. I guess I might as well have the starter motor + solenoid refurbished at the same time than the alternator !