Polaris 1017465-458 - Replacement MPN: 1017465-458 OEM Polaris Product, Part Number: 1017465-458 Trail Arm Weld, Left, Part 1017465-458, and all other Polaris Engineered service parts, deliver unmatched performance and fit for your vehicle. Each one is extensively tested in the field and meticulously crafted to match your machine. Getting Polaris Engineered parts is a decision that pays off in the long run, because it ensures there is a long run. Trail Arm Weld, Left, Bright White, Part 1017465-133 is a structural suspension member that helps support the vehicle. It is designed and tested by Polaris Engineers to ensure durability, high quality, and performance through rigorous.