


HKS Flange W/G Mani-side STD
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
HKS Flange W/G Mani-side STDSKU: 1499 RA094 HKS Flange Wastegate Manifold Side STD Subaru WRX STI 2004 2021 This HKS flange connects the wastegate to the manifold side in standard configuration for seamless integration on Subaru WRX STI models from 2004 to 2021. It fits HKS turbo manifolds delivering reliable exhaust flow and precise boost management for EJ25 engines. Expect consistent power gains with this direct fit component designed for high performance turbo setups. Key
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Your HKS Flange W/G Mani-side STD orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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4.3 ★★★★★
Based on 1907 reviews
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Product Reviews
★★★★★ 5
Great quality, price and fit!
Size: size for KONA/SOUL
Good quality and fit! Highly recommend
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
★★★★★ 5
2022 Outback 2.5
Size: size for ASCENT/CROSSTREK/IMPREZA/LEGACY/OUTBACK
Fits with no issues
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
★★★★★ 5
Perfect fit for 2018 grand touring
Size: size for 6 Turbo/CX5 Turbo
It fit perfectly in my 2018 Mazda 6 Grand Touring. I replaced both filters & had no issues installing them. They feel really well made. I could notice a difference in smell right away. It wasn’t bad, I just knew I had replaced them LOL. The value is great for what you get.
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Reviewed in the United States on September 23, 2025
★★★★★ 5
Good quality
Size: size for MDX/PASSPORT/PILOT/RIDGELINE
Great buy . Easy to change out and saved $60.00 by not having the dealership do it.
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Reviewed in the United States on March 10, 2026
★★★★★ 5
Bang for your buck
Size: size for ASCENT/CROSSTREK/IMPREZA/LEGACY/OUTBACK
Works like OEM
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Reviewed in the United States on May 24, 2026
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