GrimmSpeed Dry-Con Performance Panel Air Filter – Subaru STI 2019–2020 | 060089

GrimmSpeed 060089 Dry-Con performance panel air filter for the 2019–2020 Subaru WRX STI (EJ257, VA chassis). A drop-in replacement for the OEM paper panel filter in the factory airbox — no intake system modifications required. GrimmSpeed’s Dry-Con technology uses dry cotton gauze filtration media: lower restriction than OEM paper, washable and reusable, and free from the MAF sensor oil contamination risk associated with oil-wetted gauze filters. Ships fast across Canada and the US.

Dry-Con — Dry Cotton Gauze, No Oil Required

GrimmSpeed’s Dry-Con filtration media is the defining feature of this filter. Unlike oil-wetted cotton gauze filters (such as K&N’s standard oiled gauze line), Dry-Con uses a dry cotton gauze construction that requires no oil application after cleaning. This matters on a MAF-equipped engine like the EJ257 STI: oil-wetted filters that are over-oiled or re-oiled improperly can transfer filter oil to the mass airflow sensor element, coating the sensing wire and causing inaccurate airflow readings — resulting in fuelling irregularities, rough idle, and potentially triggering check engine codes. Dry-Con eliminates this risk entirely by removing oil from the filtration equation. Clean with water and mild detergent, dry, and reinstall — no re-oiling step.

Drop-In Panel Filter — OEM Airbox Fit

The 060089 is designed as a direct drop-in replacement for the OEM paper panel filter element in the stock 2019–2020 STI airbox. No modifications to the intake system, airbox, or intake tubing are required. The factory airbox is retained in full, preserving its heatsoak protection (the OEM airbox draws cooler air from the front of the engine bay rather than hot underhood air), OEM intake routing, and noise insulation. This is the correct choice for STI owners who want improved filtration performance and reusability without the heat exposure and warranty implications of a short ram or cold air intake.

Performance vs OEM Paper

The OEM paper panel filter in the STI airbox is a single-use disposable element with a fixed service life — as it accumulates dirt, restriction increases and airflow decreases. GrimmSpeed’s Dry-Con cotton gauze media provides lower initial restriction than OEM paper and maintains consistent performance through its service life because it is washable and reusable. Modest airflow improvement over a new OEM paper filter; more meaningful improvement over a dirty or overdue OEM paper filter. Power gains from a panel filter alone on a stock or mildly modified STI are minimal — the primary benefits are sustained low restriction, long service life, and elimination of recurring OEM filter replacement costs.

2019–2020 STI Fitment

Fits the 2019 and 2020 Subaru WRX STI with the EJ257 engine (VA chassis, GVB). Year-specific to the 2019–2020 revised airbox configuration. Not confirmed for earlier VA STI model years (2015–2018) — confirm fitment for those years separately.

2019–2020 Subaru STI only — confirm model year before ordering. Drop-in OEM airbox fit — no modifications required. Washable and reusable — no re-oiling needed.

Specifications

• Brand: GrimmSpeed
• Part Number: 060089
• Type: Dry-Con performance panel air filter
• Media: Dry cotton gauze
• Fitment: Drop-in OEM airbox replacement
• Application: 2019–2020 Subaru WRX STI — EJ257
• Washable: Yes — no re-oiling required
• Weight: 1.6 lbs