CorkSport 2007-2013 Mazdaspeed 3 51r Battery Box

CorkSport is proud to offer the first complete solution for your (up to) 4” intake, 51R battery, and ECU all in one clean enclosed package. Don’t settle for an engine bay full of loose wires, unprotected battery terminals and increased chance for corrosion. The CorkSport 51R ECU Relocation Box provides a clean setup relocating your ECU inside the box while providing ample clearance for your 51R battery and (up to) 4” intake. Manufactured from ABS plastic for an OEM fit, finish, and durability.