COBB Tuning MAF Block-Off Plate - Subaru / Mazda

Cobb Tuning
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COBB MAF Block-Off Plate starts with billet 6061 T6 aluminum and CNC-machine a plate/plug to seal o 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 unaltered 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 complete llst 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-O Plates are hard anodized in black for a durable, corrosion resistant finish. The Block-Off Plates then go back on the CNC mill for a final pass to have the COBB logo machined into their top faces. The kits are finished off with stainless steel button-head screws and black nylon washers that give the plates a professional appearance when installed. The COBB MAF Block- Off Plate Kits work with stock intakes, COBB SF Intakes and any direct replacement intake with an inner diameter similar to stock. 

Applications: - Subaru WRX 02-14 Subaru STI 04-14, Subaru Legacy GT 05-09, Subaru Legacy GT SpecB 06-09, Subaru Outback XT 05-09 and Subaru Forester XT 04-08


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