I have a ECU off a 2012 Polaris Switchback 800. It is in good working condition with lower miles with only 3089 miles on this ECU and the clips are good. This box works with the blue fuel injectors. It worked well when removed, tested good.  Please see all pictures. Both your part number and mapping number must match yours then it is plug and play. These boxes can not be reprogrammed. See all pictures.

This will fit 2011-2012 Polaris Switchback Adventure Rush RMK Pro Ride Pro R 800 with yellow injectors. 

Part # 4012998

Mapping # 4013515  works with the Blue fuel injectors.

Please check your part # for compatibility

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inventory note:2nd

Alaska Please contact me before purchasing to get the actual shipping rates due to weight and size. Thank You.