Raptor 400 Spark Plug Tune-up

[jonrb]

Don’t kill me for this question, but are there 16 total spark plugs that have to be changed? Is this thread about the ones that are the hard to find ones? I know about the eight on the bottom but didn’t realize there were 8 more. By the way I have a 2017 Supra SA450

[parrothd]

16.........top and bottom.

[jonrb]

Do you have a video or guide for the top ones?

[schwan]

The link parrothd shared still works. It's a Google photo link that shows the steps. Basically you have to unbolt the Ecm and it's bracket, a fuse box and the pcv valve. Then you can pull the tops.

Sent from my SM-G988U using Tapatalk

[haknslash]

Hey guys, what is the difference of the Indmar recommended Motocraft CYFS-12FP (597037-16 in manual) versus the Motocraft SP-526's? Are the heat ranges different or anything? Also what is with websites charging crazy amounts of money for the CYS-12FP plugs? I've seen anywhere from $250-600 lol. I go on Advance Auto website and they sell the CYFS-12FP plug for only $5.19 which it to $83 total. That's a fraction of the cost compared to boat-specific websites and stores.

[larry_arizona]

No difference between the expensive and cheap ones


Sent from my iPhone using Tapatalk

[larry_arizona]

Rock auto even cheaper


The SP526 is identical to CYFS12FP

$61 is a great deal for 16 plugs

https://www.rockauto.com/en/catalog/...park+plug,7212

Sent from my iPhone using Tapatalk

[KnoxMojo]

No difference between the expensive and cheap ones


Sent from my iPhone using Tapatalk

On both my Raptor engines at 300 hours, I have installed NGK Iridium plugs, both have ran like tops! It also helps I can get them at cost from a speed shop friend of mine.

[larry_arizona]

Stock plugs are double platinum, iridium is a step higher in durability, maybe get you an extra 100-150hours

NGK 90117 iridiums can be found under $7


Sent from my iPhone using Tapatalk

[haknslash]

Thanks guys