Spectre HPR4309 – High-Performance Panel Air Filter (Washable & Reusable)

Description:

The Spectre HPR4309 is a high-flow drop-in replacement air filter designed to improve airflow and boost engine performance. Featuring pre-oiled synthetic media supported by a durable steel mesh, it offers a perfect balance of filtration and flow. Ideal for select Nissan, Infiniti, and Subaru vehicles, this filter enhances acceleration and fuel efficiency without requiring modifications.

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Specifications:

Filter Type: Panel

Dimensions: 11″ (L) x 6.5″ (W) x 1.31″ (H)

Filter Media: Pre-oiled synthetic with chrome-treated mesh

Washable & Reusable: Yes – compatible with Spectre cleaning kits

Filtration Efficiency: 99.6% (per ISO 5011 standard)

Weight: Approx. 1.1 lb (0.5 kg)

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Features & Benefits:

Improves airflow for enhanced horsepower and acceleration

Reusable design reduces long-term maintenance costs

Drop-in fit – installs in the factory air box with no modifications

Durable construction resists heat and deformation

Designed to protect engine components while maximizing air intake

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Vehicle Compatibility:

The HPR4309 fits a wide range of models from Nissan, Infiniti, and Subaru, including:

Nissan Altima (1993–2018)

Nissan Maxima (2004–2022)

Nissan Murano (2003–2022)

Nissan Pathfinder (2013–2018)

Infiniti G35, G20, I30, I35 (1991–2007)

Infiniti FX35 (2003–2008)

Infiniti QX60 (2014–2020)

Subaru Legacy / Outback (specific years and trims)

Always check fitment with your vehicle’s airbox design for confirmation.

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How to Use:

1. Remove your stock paper filter from the airbox.

2. Insert the Spectre HPR4309 in the same position and ensure a snug fit.

3. Clean and re-oil every 50,000 miles (~80,000 km), or as needed using 40 ml of Spectre oil.