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GrimmSpeed Phenolic Thermal Manifold Spacer 3mm For 02-14 WRX 04-21 STI EJ LGT/FXT GrimmSpeed
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Engine and Components > Performance > Engine > Engine Intake Manifold|Engine and Components > Performance > Engine > Engine Intake Manifold
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Do you know what your intake manifold sits on?. . . a superheated boxer engine. If you don't know already, the cooler your intake...