Verus Engineering Windshield Washer Fluid Reservoir Cap for 2017+ Honda Civic Type R [FK8] Read reviews

Note: For FK8 owners, this is likely a 5-star product. My rating reflects the lack of FC1 fitment and the missing compatibility information, not the quality of the part itself.

First, the positives: the product arrived quickly and was very well packaged. The Verus Engineering cap itself looks and feels like a high-quality piece, and I have no complaints about the buying experience or the shipping speed.

However, the product does not fit my 2017 Honda Civic Si Sedan (FC1). I purchased it knowing there was a risk, because the listing only mentions the 2017+ Civic Type R (FK8) and does not explicitly state that it won't work on the FC1. After attempting the install, I confirmed the cap diameter is too small — approximately 5.7–5.8 cm versus the ~5.9–6 cm needed for the FC1 reservoir. It simply will not seal or stay in place.

I want to be clear: I'm not blaming Two Step Performance for my gamble, and I'm not asking for a refund based on fitment. My goal with this review is constructive. The OEM plastic cap on the FC1 is a known weak point — it discolors from sun exposure and becomes brittle and breaks every 2–3 years. A durable billet aluminum replacement like this would be a fantastic solution for Civic Si owners.

My request/suggestion: Please consider developing a version of this cap specifically for the 2017+ Civic Si (FC1). There is clearly a market for it, and Verus Engineering's quality would be a welcome upgrade over the failing OEM part. I'd gladly buy an FC1 version the moment it's available.

Bottom line: Excellent quality and fast shipping. If you own a Type R (FK8), this is likely a solid buy. If you own a Civic Si (FC1), wait until a proper fitment is released.

Love how this looks under the hood of my civic type r. The blue cap was very out of place and this jazzed up under the hood that much more. Made very well, with high quality material!