NGK plugs for 2005 VolvoPenta 5.0GXI-E

[scutty]

Hi, I'm do for a tune up on my '05 VP 5.0GXI-E. I've been researching the forums and have been scared way from the Volvo OEM plugs which appear to be champion? The part number for the "4 pc kit" is 21467472. I had one source tell me the NGK cross is 33-8M2018369 and they are $16.58 each and the only reference I can find online show these as Merc plugs. On another site I found NGK listed as TR55IX at ~$8. I'd appreciate any recommendations. Not sure if it matters but I use the boat for tubing and skiing so there are a lot of on-off-full throttle start-off cycles.

Thanks in advance-

 

[Slip Away]

The Volvo Penta plugs are the same as ~~AC Delco 41-101 (GM 12568387), just re-badged for higher price. Save your money, go to NAPA and the the AC Delco plugs.

 

[scutty]

Hi, Thanks for the info and the advice. These plugs certainly are a lot cheaper. I pulled them yesterday and there was a different number on them. They are AC 41-932 under the AC # is another 25328284. The bodies of the plugs still have red engine paint on them so I am assuming they are the original plugs. I got the boat with 100hrs on it and I don't believe they were ever changed. Is there any significant difference between these two part numbers?