★★★★★ 5
Just as good as OEM
Exactly what I expected...
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Reviewed in the United States on August 9, 2025
GSC P-D 2015+ Subaru Impreza WRX +1mm (35mm) Intake Valve Set Stainless Alloy 21-4N Chrome Polished
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
GSC P-D 2015+ Subaru Impreza WRX +1mm (35mm) Intake Valve Set Stainless Alloy 21-4N Chrome PolishedSKU: 2284 8 GSC P D 2015 2021 Subaru Impreza WRX +1mm (35mm) Intake Valve Set Stainless Alloy 21 4N Chrome Polished Enhance engine breathing on your 2015 2021 Subaru WRX with this GSC Power Division +1mm intake valve set designed for the FA20 engine. These 35mm oversized valves deliver higher airflow for more power in turbocharged setups. Crafted for reliability under boost and high RPM this set replaces stock valves with precision components. Key
Quick Dispatch:
Your GSC P-D 2015+ Subaru Impreza WRX +1mm (35mm) Intake Valve Set Stainless Alloy 21-4N Chrome Polished 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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- We offer a 30-day return/exchange service after receiving.
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4.7 ★★★★★
Based on 486 reviews
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Product Reviews
★★★★★ 5
Fit perfectly
Truly impressive, bought these and a set from a us boat supplier a thermostat made in the USA . They came with the gasket separate . I could not figure out how to put it together . I used these in my mercury optimax 135 hp . They fit perfectly and appear to be working great at a quarter the cost .
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 29, 2024
★★★★★ 5
Handles the power
Size: 5FT, Style: 8AWG
Used for leads to handle high Amperage. Replaced cheesy 12 gauge leads that came with
the unit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 28, 2026
★★★★★ 5
Good stuff!
Size: 5FT, Style: 8AWG
Good quality silicone insulated wire. It’s very flexible and solders really well. The silicone insulation can’t be beat for heat resistance. I will definitely purchase again.
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Reviewed in the United States on January 12, 2026
★★★★★ 5
Awesome Wire
Size: 15FT, Style: 8AWG
These work great! I purchased these for my subwoofer and they do a great job! Super flexible! They have no weird smells either! Would buy again!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 7, 2025
