The Injen 1035BLK is a black Hydro-Shield pre-filter, a slip-over sleeve that fits outside an Injen cone filter to catch splashes and debris before they reach the media. The manufacturer's listing gives it as a 5" base x 5.0" tall x 4" top part, matched to the X-1010, X-1011, X-1017, X-1020 and X-1024 filters. Owners on user forums say the treated material sheds water: one tested it under running water and found that it basically repels the water from going through, while another described it as more of a nylon like materal that allows some/most water to run off it. Buy it for wet-weather or dusty track days, not as a waterproofing solution, since it reduces splash exposure rather than preventing saturation.
Because the sleeve is sized to the filter rather than to a vehicle, the filter model is what determines fit, so confirm your filter before ordering. Owners on user forums report that the elastic opening stretches over the filter, so no tools are needed. Owners also say the pre-filter keeps larger debris off the filter, with one reporting that the filter still looks almost brand new except for a few spots. Search terms enthusiasts use include "Injen 1035BLK pre-filter X-1010," "Hydro-Shield black pre-filter 5x5x4," and "Injen water repellant pre-filter for cold air intake."
The manufacturer lists this pre-filter by filter model rather than by vehicle, so fit depends on whether your air filter is an X-1010, X-1011, X-1017, X-1020 or X-1024.
No. Owners on user forums report that it reduces splash exposure, but in one test water still soaked through, so it is not a substitute for avoiding deep water.
Details vary. Some owners on user forums say it restricts airflow, while others say they have not noticed a loss; confirm with the manufacturer if this matters for your build.
Installation is quick: there is elastic around the opening, so you stretch it over the filter by hand. Owners on user forums note that removal can be fiddly, since the sleeve can be tight on the filter, so pull it off gently before cleaning the filter element. Confirm the filter model before buying, because a mismatched size will not seat properly.
