Cobb 08-12 Subaru WRX / 08-12 STI / 10-12 Legacy GT MAF Block Off Plate Kit

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Cobb Tuning

COB 715070

Ships Direct from Manufacturer

The COBB Tuning MAF Block-Off Plate Kit is the perfect complement to Speed
Density tuning. Speed Density tuned vehicles use a Manifold Absolute
Pressure (MAP) sensor to monitor the mass of ingested air instead of the
OEM Mass Airflow (MAF) sensor, which means the MAF sensor can be
removed from the intake tube. Removing the MAF sensor eliminates a point
of restriction and turbulence in the intake tract, but can present
additional issues if not done properly. The COBB Tuning MAF Block-Off
Plate is the easiest way to safely delete the MAF sensor for optimal
performance and enhanced engine bay appearance.

We start with billet 6061 T6 aluminum and CNC-machine a plate/plug to
seal off the opening left when the MAF sensor is removed. The plug has
two unique features that are key to reliable performance. The first is
an O-ring that tightly seals the Block-Off Plate to the MAF sensor
opening, preventing unfiltered air from entering the intake tract. The
second feature is the shape of the plug face, which is sculpted to
exactly match the inside curve of the MAF tube. When seated, the plug
completey fills the MAF sensor opening and the face sits flush with the
inside of the MAF tube. This provides smooth, uninterrupted walls that
prevent turbulence.

The COBB MAF Block-Off Plate is hard anodized in black for a durable,
corrosion resistant finish. The Block-Off Plate then go back on the CNC
mill for a final pass to have the COBB logo machined into the top face.
The kit is finished off with stainless steel button-head screws and
black nylon washers that gives the plate a professional appearance when
installed. The COBB MAF Block-Off Plate Kit works with the stock intake,
COBB SF Intake and any direct replacement intake with an inner diameter
similar to stock.

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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