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Peru, Lima

1 Level

728 Review

35 Karma

Review on NGK 6441 ZFR6FIX 11 Iridium Spark by Justin Ott

March 05, 2023

Great replacement! on spark plugs

I swapped my stock spark plugs for these in my Jeep Liberty. Chrysler requires a V-Power version due to the copper core, but they have a copper core and a stronger iridium tip. Smoothed out my 3.7 engine well and they should last a lot longer than stock spark plugs. I only wish there was a 6 pack option!

Pros

Trivalent metal coating provides excellent anti-corrosion and anti-seize properties; Spark plug part number in the box: ZFR6FIX-11

Cons

Long wait

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