Universal Parts Spring Seat O-Ring $0.99 Quantity discounts available QuantityPrice SKU: 151-146 This item is IN STOCKCurrent Stock: 6 Quantity -+ Add to Cart Details Specs Inner Diameter: 35mm Outer Diameter: 38mm Thickness: 1.5mm Supported Models Baja SC50, Kymco, Panterra, QMB139 50cc/49cc , Roketa, Schwinn, SUNL, Tank, Various unlisted makes/models DetailsSpecsSupported Models Back Universal Parts QMB139 Clutch Spring Seat O-ring for 50cc 4-stroke QMB139 engines. Back Inner Diameter: 35mmOuter Diameter: 38mmThickness: 1.5mm Back Baja SC50, Kymco, Panterra, QMB139 50cc/49cc , Roketa, Schwinn, SUNL, Tank, Various unlisted makes/models