Universal Parts Cam Tensioner Bolt O-ring $0.49 Quantity discounts available QuantityPrice SKU: 151-125 Restock: Limited Supply This item is IN STOCKCurrent Stock: 201 Quantity -+ Add to Cart Details Specs Outer Diameter: 17mm Thickness: 1.3mm Inner Diameter: 15mm Supported Models QMB139 50cc/49cc , Various unlisted makes/models DetailsSpecsSupported Models Back Universal Parts Camshaft Tensioner Bolt O-ring for 50cc 4-stroke QMB139 engines. Back Outer Diameter: 17mmThickness: 1.3mmInner Diameter: 15mm Back QMB139 50cc/49cc , Various unlisted makes/models