It is common to use generic fuel/oil hose 1/8 inch ID (inside diameter) when replacing old oil hoses. That said, the Polaris OEM hoses are of good quality.
Note: The Polaris OEM oil hose clamps 7080603 (Clamp, 7 mm) are sized to be snug on the 7mm OD of the OEM hose. If you use a substitute oil hose, be sure the clamps are snug enough to prevent the hose from working off the nipples or leaking.
Pro 785 engine - O-rings for the exhaust pipes
McMaster 9464K56 The size is 2-333 Viton.
PRO785 Lord Mounts for triple exhaust pipes
Mine broke.and after looking at them ..Well they're glued together which is junk for surf riding...
I bought these;
5823K21 Natural Rubber Sandwich Mount W/304 SS Stud Cylindrical, Male/Male, 3/8"-16 Thread, 3/4" Height
The original mounts are 1 1/4 inch thick rubber.. I used washers to make up the 1/2 inch difference....the diameter of the rubber was bigger also...BUT I didn't have any issues with clearances... these mounts are 11 bucks and are a TON stronger than the 48 dollar mounts that Polaris sells. These screw right into the hull mounts...same size and are stainless steel.