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Old 14-03-2019, 13:13   #1
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Perkins 4.108 Starter

Fellow sailors,

I want to purchase a new starter for my Perkins 4.108. The part number on the old one is 47920034A. I did a web search and see prices in the $500's for this exact part number. I find a few for around $300 that have the part number 47920034. No "A" on the end. Does anyone know what the "A" means?

As I understand it I need a:

12 V
13 tooth
Clockwise rotation

I do not mind paying $500 if that is truly the right, and best, starter I can get for the money. However, I do not want to get ripped off. I know if I call TAD they will give me good advice and sell me the right starter, but they are very expensive. I do not see any starters available from parts4engines.

Any direction would be much appreciated!

Thanks

Phil
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Old 14-03-2019, 13:24   #2
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Re: Perkins 4.108 Starter

Trans Atlantic diesel sells them and i want ot say they're around $275 for a new age starter to replace the original 50lb beast.
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Old 14-03-2019, 13:28   #3
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Re: Perkins 4.108 Starter

Sorry $295 plus shipping
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Old 14-03-2019, 13:28   #4
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Re: Perkins 4.108 Starter

There is a discussion on the perkins starter here including possible replacements Help identifying a Perkins Starter
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Old 14-03-2019, 13:56   #5
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Re: Perkins 4.108 Starter

47920034A is the original Lucas number for a 12V, 10 tooth, clockwise, direct drive starter. They are available new for about 580.00.

LUCAS: 42790141 47920141 54292967 623479201141 NSB418
LUCAS ELECTRICAL EUR: LRS1339
LUCAS MARINE: 47920034A
PERKINS: 2873B059
VOLVO: 859722
WHATCOM: 38312

ITEM DESCRIPTION: STARTER
OEM: LEECE NEVILLE
TYPE: PLGR
VOLTAGE: 12
POWER: 2.2 KW
ROTATION: CLOCKWISE
TOOTH COUNT: 10
GEAR OD: 1.547IN / 39.3MM

A new, gear reduction starter can have a different number of teeth, spin the engine faster, and cost less. There are many available for 130.00 or so, a place to start to be sure it fits is a good local starter/alternator shop, who can probably rebuild your starter for about the same money.

Or there's a direct-drive, 10 tooth, CW 12v replacement here for 120.00.

https://www.dbelectrical.com/product...s-engines.html
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Old 14-03-2019, 15:00   #6
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Re: Perkins 4.108 Starter

That part number seems to be a 10 tooth. I don't know how critical it is to maintain the same tooth count on the starter, unless the tooth strip on the flywheel is some how different across different models, otherwise I don't think it's that critical. I bought this one a last year:

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

It's a 12 tooth Delco. It looked to be pretty good quality. I even took a peek inside a bit and the components seemed brand new. It's worked great for so far. Good, strong cranking in cool temperatures.

This was a drop-in replacement from my previous starter so I don't know if the bolt pattern, etc. would be exactly the same in yours. For the difference in price, it might be worth looking in to.
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Old 14-03-2019, 15:20   #7
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Re: Perkins 4.108 Starter

Other issue is whether the new starter can be accommodated by the existing spacer plate or if a new one is required.
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Old 14-03-2019, 15:41   #8
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Re: Perkins 4.108 Starter

I almost bought a spare back when I was taking off cruising. I decided to check out the one on the engine so I bought new brushes etc. When I took it apart it was pretty much new inside. Just cleaned it up and kept the brushes etc as spare instead. If it's not all rusty and etc, it's a thought. They dont get a lot of use compared with a car starter.
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Old 14-03-2019, 15:43   #9
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Re: Perkins 4.108 Starter

I replaced mine with a newer lighter one. I did not look forward to getting the old heavy one back in. I did keep it as a spare but the new one does spin faster.
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Old 14-03-2019, 16:20   #10
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Re: Perkins 4.108 Starter

There are at least 2 different pinion diameters, if I remember correctly one is 46.3 mm and the other is 39.3. This probably has a bigger bearing on selection than tooth count, but a starter shop is the one to tell for sure.
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Old 15-03-2019, 22:52   #11
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Re: Perkins 4.108 Starter

I bought a new one on ebay for my 4108 generator, about $100. Been using about 7 years.
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