This is a high-quality Ski-Doo Regulator Rectifier for your Ski-Doo Formula Plus XTC 521 537. This unit is an excellent money-saving choice when replacing your damaged regulator. This unit is a direct replacement unit for easy installation and no assembly is required.

Apps:

1991 Ski-Doo Formula Plus XTC 521
1991 Ski Doo Forumula Plus XTC 537

OE #(s): 515175546, 410909000, 410910300, 410910700, 410911300, 410918400, 420866080, 515163900