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18 Ιουν 2010 · Not sure of what the difference is between the two (each letter and number represents a different spec), but NGK doesn't list IFR6A11 as being compatible with the 2ZZ.
2 Μαρ 2006 · If you want NGK Iridium then the OE plug below would be best because it has a longer life expectancy. The iridium IX is also excellent but won't last as long because it has a slightly smaller electrode. Your OE plugs(both denso and ngk) have .7mm center electrodes. The IX is .6 and the newer denso is .4. The sk20r11 is .7.(OE).
4 Νοε 2006 · BKR6EIX-11 (NGK-3764) a.k.a Iridium IX-11 - This is pregapped at .044 and should not be used in our cars. Adjusting a gap of this width is not necessary and should not be attempted. Overall, I think the smartest plug to go with is the Laser Platinum.
18 Ιαν 2015 · In identical spark plug types, the difference from one full heat range to the next is the ability to remove 70°C to 100°C from the combustion chamber. The heat range numbering system used by spark plug manufacturers is not universal.
17 Μαΐ 2007 · BKR6EIX-11 (NGK-3764) a.k.a Iridium IX-11 - This is pregapped at .044 and should not be used in our cars. Adjusting a gap of this width is not necessary and should not be attempted. Overall, I think the smartest plug to go with is the Laser Platinum.
17 Φεβ 2004 · Fresh plugs do make a difference. After 3k miles I can start to feel a touch of hesitation and my mileage drops off slightly. After 5k miles it is quite noticeable. I've gotten into the habit of changing the plugs every time I change the oil which is every 3333 miles. FWIW, that -11 indicates a 1.1mm gap.
18 Απρ 2016 · So I am torn between which plugs to purchase. I've used NGK in many of my foreign vehicles with good success. I do however see that the factory plugs are Denso. Does anyone have any pros or cons against the two brands mentioned?
