Mazdaspeed NGK 1-Step Colder Spark Plugs - Set of 4

Came pre gapped perfectly as described. Car kinda pops lil when you first start it up, totally normal. Take it for a drive and it quickly goes away. Overall satisfied with this product

NGK Park Auto Motorsports

Mazda Performance Parts New Products - Page 6 - page 6

NGK 1 step colder Iridium IX Spark Plug - SPEED PERF6RMANC3

Mazdaspeed NGK 1-Step Colder Spark Plugs - Set of 4

Mazdaspeed E85 Safe HPFP O-Ring Kit and NGK Spark Plugs Combo

Mazda Performance Parts New Products - Page 6 - page 6

NGK 1 Step Colder Spark Plug Set of 4 - SPEED PERF6RMANC3

Panda Motorworks Pre-Gapped NGK 1 Step Colder Spark Plugs

NGK Iridium IX Spark Plug 1 Step Colder Mazdaspeed 3 2007-2013