Injen 18-21 Subaru WRX STI H4 2.5L Turbo SP Aluminum Series Cold Air Intake - Polished

Injen 18-21 Subaru WRX STI H4 2.5L Turbo SP Aluminum Series Cold Air Intake - Polished

Marsoni

M251S

$184.55

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

Injen 18-21 Subaru WRX STI H4 2.5L Turbo SP Aluminum Series Cold Air Intake - PolishedSKU: SP1208P UPC: 843115029739 Injen 18 21 Subaru WRX STI H4 2. 5L Turbo SP Aluminum Series Cold Air Intake Polished Transform airflow in your 2018 2021 Subaru WRX STI with the Injen SP1208P SP Aluminum Series Cold Air Intake in polished finish. Engineered for the H4 2. 5L Turbo, it replaces stock airbox for dyno proven gains of 12 HP and 13 lb ft torque. Hear the aggressive throaty tone while enjoying reliable filtration and power delivery. Key

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We offer a 30-day return/exchange service after receiving.
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These were great for what I wanted them for. I like the look of having a card slabbed with a label but sending to the big grading companies is expensive. I was able to Slab wrestling cards, and sports cards. I even did one of my garbage pail kids. These are not designed to just snap together and do require some plastic adhesive or glue. Not a bad price for what I needed them for.

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Reviewed in the United States on December 26, 2021

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Mackenzie Risen

Phoenix, US

★★★★★ 3

Don’t get this

Item Package Quantity: 6

The two sides don’t fit together properly and pop open with the slightest of uneven pressure. There’s practically no clips to keep them together so cards just slide right out of them when picked up vertically. Don’t get this if you are looking for something to keep very expensive items in as they will just get ruined or lost. You get what you pay for.

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Reviewed in the United States on November 14, 2022

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Karen Kay Gallagher

Boise, US

★★★★★ 5

My son loved them

Item Package Quantity: 6

Perfect for trading graded baseball cards

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Reviewed in the United States on December 18, 2025

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NomeByFace

Lowell, US

★★★★★ 5

GREAT!

Item Package Quantity: 12

I was a little unsure at first, but this product turned out to be a great choice. It does exactly what I needed, and I’ve been using it without any issues.

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Reviewed in the United States on December 2, 2024

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Christopher Kline

Battle Creek, US

★★★★★ 5

Great for whatnot auctions or any auctions!

Color: Black

I love it it’s perfect!

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Reviewed in the United States on March 21, 2026