2017 Mercury 115 Pro XS
2B442155
Preparing to do some Spring maintenance on my Mercury to include spark plugs. Manual calls for NGK ZFR5F gapped at .032".
I keep seeing these NGK ZFR5F-11 referenced but don't know if they are just a newer, bigger better, improved plug or if they are a totally different application.
What say the EXPERTS?
Joe B
2017 Tracker PT 190 TX
2017 Mercury 115 Pro XS
Mercury Spitfire X7 19” prop
51 mph @ 6240 rpms (RPMs from Vessel View Mobile) : full fuel tank and fishing load by myself
4.2 second Hole Shot (measured using Vessel View Mobile)
Engine mounted in 3rd hole
Minn Kota Ulterra-Link w/built in MDI 80 lb thrust 60” shaft
Humminbird Helix 12si Gen1 chirp on console
Humminbird Helix 15si Gen4 cho on bow
Humminbird Mega360
Dotline two step transom boarding ladder
Tracker trailer bow boarding step
Same plug, but the -11 is meant for a larger gap (.044").
Personally, I would stick with the recommended plug (ZFR5F), or Mercury Part# 8M0057936.
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 47 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
Thank you. I'll stay with the recommended plug.
Joe B
2017 Tracker PT 190 TX
2017 Mercury 115 Pro XS
Mercury Spitfire X7 19” prop
51 mph @ 6240 rpms (RPMs from Vessel View Mobile) : full fuel tank and fishing load by myself
4.2 second Hole Shot (measured using Vessel View Mobile)
Engine mounted in 3rd hole
Minn Kota Ulterra-Link w/built in MDI 80 lb thrust 60” shaft
Humminbird Helix 12si Gen1 chirp on console
Humminbird Helix 15si Gen4 cho on bow
Humminbird Mega360
Dotline two step transom boarding ladder
Tracker trailer bow boarding step
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