ngk zgr5a is very good

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markus_74
E30 Zone Camper
E30 Zone Camper
Posts: 1078
Joined: Fri Jan 26, 2007 11:00 pm
Location: Kudus city, Indonesia

Post Sun Jan 31, 2016 3:52 am

Hello,

Just want to share after failed use ngk bpr6es on my later 89-91 low comp m20 engine.

I fitted ngk zgr5a and it is surprisingly smooth but power increas.

Very recommend

Cheers
Markus
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