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Spark plugs

Anything related to the operation of your boat. Steering, Bilge Pumps, thru-hulls, bottom paint, etc.
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Topic author United States of America
Gary Rose
Scurvy Dog
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Vessel Info: 2000 356 carver aft
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Spark plugs

Postby Gary Rose » December 15th, 2024, 11:56 am

Just a question, I removed a spark plug from my 8.1l HO to get the number so i can get new plugs. It’s a AC Delco 12578277 so i go on line to see where i can get them and there are prices from $6.50 to $57.00 each. Why is there such a difference? If hey are the same number they should be the same quality Right??????
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bud37
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Re: Spark plugs

Postby bud37 » December 15th, 2024, 7:13 pm

Maybe that 57 was for 8....anyway they should be well under 10 each....if it were me I would try to get them from a reputable local supplier where you can pick them up and check em.

Seems there are lots of knock offs around now, so be careful. I have seen some online stuff being sold for 10 times what is worth elsewhere.
FWIW.....The above is just my opinion..... :popcorn:
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Topic author United States of America
Gary Rose
Scurvy Dog
Scurvy Dog
Posts: 30
Joined: June 8th, 2019, 9:28 am
Vessel Info: 2000 356 carver aft
Location: California
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Re: Spark plugs

Postby Gary Rose » December 15th, 2024, 7:32 pm

Thank you Bud37
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pepmyster
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8.1 Volvo Penta
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Re: Spark plugs

Postby pepmyster » December 16th, 2024, 6:10 am

When I replaced mine, I used NGK iridium.
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MyPleasure
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Joined: October 18th, 2022, 7:08 pm
Vessel Info: 1992 Carver 36 aft cabin with Volvo 740b engines. Westerbeke 5kw generator. Bought the boat in Portland Oregon in June, and a friend and I brought it up to Sidney, BC. Great trip!
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Re: Spark plugs

Postby MyPleasure » December 28th, 2024, 11:31 pm

Hi, I replaced all 16 on my Volvo 740b’s and used NGK plugs. I put the NGK Iridium’s in my Chev truck with the 6 litre engine, and found them no better than the regular NGK plugs. I actually took out the iridium’s and put the regular plugs in, they work fine, and a lot cheaper.
Al
1st Carver 1987 32 Aft Cabin
2nd Carver 1989 4207 Aft Cabin
3rd Carver 1995 350 Voyager
4th (current) 1992 36 Carver Aft Cabin
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