


HKS SUPER FIRE RACING M40
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
HKS SUPER FIRE RACING M40SKU: 50003 M40 UPC: 4957266720219 HKS Super Fire Racing M40 Spark Plug 2002 2021 Subaru Impreza WRX STI Legacy GT Forester XT HKS Super Fire Racing M40 is a high performance iridium spark plug designed for racing and tuned applications. It fits 2002 2021 Subaru Impreza WRX STI Legacy GT Forester XT models with EJ20 EJ25 engines. Expect stronger ignition sparks for better combustion higher horsepower throttle response and extended plug life under
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★★★★★ 5
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Size: 3.5 Ounce (Pack of 3)
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Reviewed in the United States on May 10, 2026
★★★★★ 3
Ok but would not purchase again
Size: 3.5 Ounce (Pack of 6)
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Reviewed in the United States on April 26, 2026
★★★★★ 5
Good aroma
Size: 3.5 Ounce (Pack of 3), Size: 3.5 Ounce (Pack of 3)
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Reviewed in the United States on October 24, 2025
★★★★★ 5
Natural soap
Size: 3.5 Ounce (Pack of 3)
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Reviewed in the United States on June 1, 2026
★★★★★ 5
Yummmm
Size: 3.5 Ounce (Pack of 6)
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