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Description
STI RADIATOR CAP For IMPREZA 5DooR (GP) ST4511355010Brand STI Product RADIATOR CAP Product Number ST4511355010 Description Opening valve pressure changed from 1. 1 bar (standard) to 1. 3 bar This product prevents overflow caused by the thermal expansion of coolant water even under severe conditions such as sports driving and circuit racing Opening valve pressure: .. 1. 3 bar. Compatible Vehicle IMPREZA 5DooR (GP) Compatible Models Model adaptation symbol: A 2011 December to 2012 October 1. 6i (FWD CVT)
| Brand | STI |
| Product | RADIATOR CAP |
| Product Number | ST4511355010 |
| Description | Opening valve pressure changed from 1.1 bar (standard) to 1.3 bar This product prevents overflow caused by the thermal expansion of coolant water even under severe conditions such as sports driving and circuit racing Opening valve pressure: .. 1.3 bar. |
| Compatible Vehicle | IMPREZA 5DooR (GP) |
| Compatible Models |
Model adaptation symbol: A 2011 December to 2012 October 1.6i (FWD / CVT) ___ 1.6i (AWD / 5MT) ___ 1.6i (AWD / CVT) ___ 1.6iL (FWD / CVT) ___ 1.6iL (AWD / 5MT) ___ 1.6iL (AWD / CVT) ___ 2.0i (FWD / CVT) ___ 2.0i (AWD / CVT) ___ 2.0i ES (AWD / CVT) ___ 2.0iS (FWD / CVT) ___ 2.0iS (AWD / CVT) ___ 2.0 iS ES (AWD / CVT) ___ model adaptation symbol: B 2012 November 2013 October 1.6i (FWD / CVT) ___ 1.6i (AWD / 5MT) ___ 1.6i (AWD / CVT) ___ 1.6iL (FWD / CVT) ___ 1.6 iL (AWD / 5MT) ___ 1.6iL (AWD / CVT) ___ 2.0i (FWD / CVT) ___ 2.0i (AWD / CVT) ___ 2.0i ES (AWD / CVT) ___ 2.0 iS (FWD / CVT) ___ 2.0iS (AWD / CVT) ___ 2.0iS ES (AWD / CVT) ___ model adaptation symbol: C 2012 November 2013 October 1.6i (FWD / CVT) ___ 1.6i (AWD / 5MT) ___ 1.6i (AWD / CVT) ___ 1.6iL (FWD / CVT) ___ 1.6iL (AWD / 5MT) ___ 1.6iL (AWD / CVT) ___ 2.0i (FWD / CVT) ___ 2.0i (AWD / CVT) ___ 2.0i ES (AWD / CVT) ___ 2.0iS ( FWD / CVT) ___ 2.0i-S (AWD / CVT) ___ 2.0iS ES (AWD / CVT) ___ model adaptation symbol: D 2014 November 2014 October 1.6i (FWD / CVT) ___ 1.6i (AWD / 5MT) ___ 1.6i (AWD / CVT) ___ 1.6iL (FWD / CVT) ___ 1.6iL (AWD / 5MT) ___ 1.6iL (AWD / CVT) ___ 1.6iS (FWD / CVT) ___ 1.6iS (AWD / CVT) ___ 2.0i (FWD / CVT) ___ 2.0 i (AWD / CVT) ___ 2.0i ES (AWD / CVT) ___ 2.0iS (FWD / CVT) ___ 2.0iS (AWD / CVT) ___ 2.0iS ES (AWD / CVT) ___ 2.0iS ES ACTIVE STYLE (AWD / CVT ) ___ HYBRID 2.0i ES (AWD / CVT) ___ HYBRID 2.0iS ES (AWD / CVT) ___ model adaptation symbol: E 2015 November - 2016 09 May 1.6i (FWD / CVT) ___ 1.6 i (AWD / 5MT) ___ 1.6 i (AWD / CVT) ___ 1.6iL (AWD / 5MT) ___ 1.6iL (AWD / CVT) ___ 1.6iL (FWD / CVT) ___ 1.6iL Proud Edition (FWD / CVT) ___ 1.6 iL ES (AWD / CVT) ___ 1.6iL ES Proud Edition (AWD / CVT) ___ 1.6iS (FWD / CVT) ___ 1.6iS ES (AWD / CVT) ___ 2.0i (AWD / CVT) ___ 2.0i (FWD / CVT) ___ 2.0i Proud Edition (FWD / CVT) ___ 2.0i ES (AWD / CVT) ___ 2.0i ES Proud Edition (AWD / CVT) ___ 2.0iS (FWD / CVT) ___ 2.0iS ES (AWD / CVT) ___ 2.0iS ES Active Style (AWD / CVT) ___ HYBRID 2.0i ES (AWD / CVT) ___ HYBRID 2.0iS ES (AWD / CVT) ___
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| Remarks | * When replacing this product, pay careful attention to leakage of water from the piping, and be sure to inspect the coolant water at the start of work. * The explanation of this product is for Japanese specification. |
| Notes | Images are for illustration purpose only. Actual product may vary. |
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4.1 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 5
Excellent air quality and value
Size: 1 Count (Pack of 1)
Much better than the standard filter for air quality. Similar price to the ones that are thrown away 2-3 times per year.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 6, 2025
★★★★★ 5
Great Air Filter
Size: 9.6" x 11.1" x 2.2"
Some review’s will say “it’s an air filter, blah, blah, blah”. These reviews are written by the same people that think “water is water”. I’m not one of those people. I’ve noticed that the air smells better, cleaner. I’ve also noticed that the air blows a little stronger. It’s very easy to install, fits perfectly and it’s reusable so it saves you money over the long term and it reduces landfill waste.
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Reviewed in the United States on July 4, 2024
★★★★★ 5
THE cabin air filter to use!
Size: 9.6" x 11.1" x 2.2"
I replaced the OEM cabin air filter when I bought my truck, like I always do. 2019 & 2020 Ram 1500's suffer from an underperforming AC system in the summer due to a blend door in the dash not closing completely. Having any kind of restrictive cabin air filter only exacerbates the problem. I bought this filter on the recommendation of many owners who had done the same with great results. I was presently surprised at the increase in air flow coming out of the vents. I also like that in K7N fashion, it is washable and reusable, effectively making it a lifetime filter. Don't overthink it. Yes it costs more, but you will save $$ in the long run with this filter. I am sure this filter fits many other makes & models of vehicles and will improve the airflow of any vehicle it is installed in.
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Reviewed in the United States on July 31, 2024
★★★★★ 5
Easy to install and fits great
Size: 9.6" x 11.1" x 2.2"
Fits great and seems better quality than any paper filter. Nice rubber edge makes a good seal and the airflow is good. Used in a 2023 Ram 3500. Installation was easy. So far it appears to filter out all the dust and odors.
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Reviewed in the United States on December 16, 2025
★★★★★ 5
Best replacement filter
Size: 9.6" x 11.1" x 2.2"
Great quality replacement for factory filter, fits snug, very easy installation, and the performance is on par.
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Reviewed in the United States on February 11, 2026