Merits Pioneer 9 (S331/S337/S3371) Scooter Parts

This page covers replacement parts for the Merits Pioneer 9 (S331/S337/S3371) mobility scooter. Parts include Group 24 battery packs, 24V chargers, 4.00-5 and 3.00-4 tires and inner tubes, 12" drive and flat-free front wheel assemblies, the motor, transaxle and brake, a controller, a headlight, throttle and speed pots, key switches and keys, a charging port, a basket, a seat post and armrest pads.

The Pioneer 9 requires two 12V Group 24 batteries (we list a 75 Ah pack) and a 24V 8.0 amp off-board charger. Listed tire sizes are 4.00-5 (13"x4", 330x100) and 3.00-4 (10"x3", 260x85). The motor, transaxle, brake and controller are shared with the Pioneer 10 (S341). The model number is on a label on the frame, usually under the seat. As an authorized Merits dealer, we supply genuine OEM Merits parts, with compatible alternatives on select items. Can't find your part? Contact us with your model number and a photo of the old part, and our team will help track it down.