Universal Parts Oil Filter Cover Bolt - QMB139 50cc $3.49 Quantity discounts available QuantityPrice SKU: 151-28 This item is IN STOCKCurrent Stock: 16 Quantity -+ Add to Cart Details Specs Diameter: 39.5 mm Thread Length: 9 mm Bolt Head Diameter: 17 mm Supported Models QMB139 50cc/49cc , Various unlisted makes/models DetailsSpecsSupported Models Back Universal Parts Oil Filter Cover Bolt for 50cc 4-stroke QMB139 engines. Back Diameter: 39.5 mmThread Length: 9 mmBolt Head Diameter: 17 mm Back QMB139 50cc/49cc , Various unlisted makes/models