HKS SUPER FIRE RACING M45iL

Marsoni

M251S

$135.00

Get it in 3 business days with 1 day shipping. Friday, May 29

HKS SUPER FIRE RACING M45iLSKU: 50003 M45IL UPC: 4957266720288 HKS SUPER FIRE RACING M45iL Spark Plug for Subaru Impreza WRX STI 2002 2021 The HKS Super Fire Racing M45iL is an iridium spark plug built for high performance Subaru engines. It fits Impreza WRX and STI models from 2002 to 2021 with EJ20 and EJ25 turbo setups. This plug provides reliable spark at 12000 RPM and above for consistent power delivery and reduced misfires. Key Features 0. 6mm Iridium Center Electrode:

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Pack a lunch when you tackle this project boys.. its a doozy!! Month in going great so far definetly did what I purchased it to do. 2000 chevy with two p3 10s every bass drop sounded like an old firebird with loose trunk bolts. Threw this on the back walls floor underneath the speaker and the doors.. all that energy is now in the cab with me instead of getting lost in rattling metal!! Love it!!! Left a few pieces outside after I was done rained like hell on them so water doesnt hurt this stuff at all or direct sunlight in south mississippi.. good stuff pick this up and make them systems thud instead of rattle!!! You wont regret it!! I didn't!!

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Reviewed in the United States on June 11, 2026

Verified Purchase

Roseanna Boyce

Charlottesville, US

★★★★★ 5

Delivers a quieter ride

Size: 36 sqft

This works very well to put down road noise. The difference was immediate in my van. I was shocked it made such a difference.

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Reviewed in the United States on June 6, 2026

Verified Purchase

Houston, US

★★★★★ 4

Reasonably priced sound deadening

Size: 18 sqft

Easy to cut with a carpet knife. I used a heatgun to make it stickier and more moldable. The foil isn't so thick that you risk cutting yourself like some Dynamat variants.

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Reviewed in the United States on March 12, 2026

Verified Purchase

David

Natrona Heights, US

★★★★★ 5

Works for me

Size: 36 sqft

Sticky so don’t let it touch you or each other but it comes off and works fine.

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Reviewed in the United States on June 7, 2026