Supertech Subaru EJ20/EJ25 Black Nitrided Exhaust Valve - +0.5mm Oversize - Single

Supertech Subaru EJ20/EJ25 Black Nitrided Exhaust Valve - +0.5mm Oversize - Single

Marsoni

M251S

$20.95

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

Supertech Subaru EJ20/EJ25 Black Nitrided Exhaust Valve - +0.5mm Oversize - SingleSupertech Subaru EJ20 EJ25 Black Nitrided Exhaust Valve +0. 5mm Oversize Single

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What a feeling! With the engine air filter changed, the engine was able to take deeper, longer breaths, eventually reaching that famous “runners high” you hear so much about. The new interior air filter changed the atmosphere into crisp, clean mountain fresh air, causing my passengers and me to spontaneously yodel with abandon. Here’s to believing!

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on January 2, 2026

Verified Purchase

Chelsea, US

★★★★★ 4

Wasn’t green but confirmed with Ecogard that it’s the correct filter

Size: 8" x 10" x 2", Size: 8" x 10" x 2"

As the title says the filter wasn’t green this time (purchased 3 other times). I read off the numbers to Ecogard technical support and they said it was their filter and by the date code manufactured by a different factory. This one was grey/black with blue edge and you could tell there was charcoal embedded in it. Not sure if it will perform the same and smell the same, as I preferred the scent of the green one. The listing needs to be updated with the correct picture if the green isn’t made anymore.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on March 11, 2026