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Graveyard Performance

NGK 6510 1-step Colder Iridium Spark Plug’s - Mazdaspeed / Focus RS/ST / Ecoboost Mustang Set of 4

NGK 6510 1-step Colder Iridium Spark Plug’s - Mazdaspeed / Focus RS/ST / Ecoboost Mustang Set of 4

9 total reviews

Regular price $40.00
Regular price Sale price $40.00
Sale Sold out
Gap Size

We try our best to have as many of our products readily available, if you want to double check stock or lead times, please give us a call at 801-769-6929 or reach out to one of our sales reps!

NGK Iridium IX Spark Plugs are designed specifically for the performance enthusiast. Iridium IX offers extreme ignitability, improved throttle response and superior anti fouling.

The fine Iridium tip ensures high durability and a consistently stable spark. Iridium alloy has extremely high melting point, perfect for today's high-tech, high-performance engines. Trivalent Metal Plating - superior anti-corrosion and anti-seizing properties. Outstanding acceleration, high fuel efficiency and durability. Ultimate design, technology and performance.

These are one step colder plugs and are recommended for higher horsepower applications. A higher heat range number does not improve engine performance, it increases the plugs ability to dissipate heat.

Stock Number 2309
Heat Range: 7

NOTE: For stock turbo Mazdaspeed applications we recommend these to be gapped from .026-.028. For applications over 500hp we recommend a .024-.026 gap.

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Customer Reviews

Based on 9 reviews
78%
(7)
11%
(1)
0%
(0)
11%
(1)
0%
(0)
L
Lee Larkins
Works great

And came faster than expected thanks to Alex Forte.

G
Gambit Hand

NGK 6510 1-step Colder Iridium Spark Plug’s - Mazdaspeed / Focus RS/ST / Ecoboost Mustang Set of 4

J
Johnny Driedger

Spark plugs work great but shipping was crazy expensive and then I had to pay 30 bucks when they were delivered…terrible experience

S
Scott

Gapped to .026 I ordered .028 it's all good just wanted y'all to know you sent the wrong one

A
Austin Warren

Great product!

Customer Reviews

Based on 9 reviews
78%
(7)
11%
(1)
0%
(0)
11%
(1)
0%
(0)
L
Lee Larkins
Works great

And came faster than expected thanks to Alex Forte.

G
Gambit Hand

NGK 6510 1-step Colder Iridium Spark Plug’s - Mazdaspeed / Focus RS/ST / Ecoboost Mustang Set of 4

J
Johnny Driedger

Spark plugs work great but shipping was crazy expensive and then I had to pay 30 bucks when they were delivered…terrible experience

S
Scott

Gapped to .026 I ordered .028 it's all good just wanted y'all to know you sent the wrong one

A
Austin Warren

Great product!