Generic 4Runner Rear AC Vent Extenders for Toyota 5th Gen (2010–2024) — Black PETG 2-Piece Under-Seat Air Deflectors

If the rear seats in your 4Runner feel noticeably colder or warmer than the front, the problem is often that under-seat floor vents push most air into the carpet instead of into the cabin. These snap-on extenders are custom-shaped for the 5th Generation Toyota 4Runner so they attach directly to the factory under-seat vents and deflect the air upward where people actually sit. Made from heat-resistant black PETG, the pair blends discreetly with the interior while standing up to temperature changes inside the vehicle.

How do these vent extenders improve rear passenger comfort?

By changing the direction of airflow from downwards into the floor to upwards into the cabin, these deflectors deliver more conditioned air to second and third-row passengers. That helps balance temperature between front and rear seats and reduces the need to crank the HVAC.

• Redirects under-seat vent flow upward where occupants can feel it.
• Improves cooling and heating efficiency for rear rows.
• Even distribution reduces hot or cold spots in the cabin.

Will they fit my Toyota 4Runner and how easy is installation?

These extenders are tailored specifically for 5th Generation Toyota 4Runners produced from 2010 through 2024 and will not fit other models or generations. Installation requires no tools: each piece snaps onto the existing under-seat vent housing, securing quickly and cleanly.

• Vehicle fit: only 5th Gen 4Runner (2010–2024).
• Tool-free snap-on installation in seconds.
• Includes both driver and passenger side extenders in one kit.

What are they made of and will they match my interior?

The extenders are molded from durable, heat-resistant PETG plastic with a black finish designed to blend with most 4Runner interiors. PETG resists cracking and warping under typical vehicle temperature swings, and the matte black complements factory trim for a near-factory appearance.

• Material: black PETG for temperature durability.
• Finish: interior-matching matte black for a discreet look.
• Two-piece set covers both under-seat vents for symmetry.

Do these affect airflow volume or HVAC performance?

The extenders are engineered to redirect air rather than block it, so they do not significantly restrict airflow volume. Instead, they guide existing HVAC output into higher cabin levels where passengers benefit without causing undue backpressure on the system.

• Designed to redirect, not obstruct, vent airflow.
• Helps occupants feel HVAC output more efficiently.
• No modifications to the vehicle HVAC are required.

Who is this product for? These vent extenders are ideal for 5th Gen Toyota 4Runner owners who routinely carry rear-seat passengers — families with children, pet owners, or overlanders who use second and third-row seating. If your 4Runner’s rear cabin tends to lag behind the front in comfort, or you want a simple, reversible, tool-free upgrade that looks factory-installed, this two-piece PETG set offers a low-cost, durable solution.