Universal Parts QMB139 39mm Cylinder Head Gasket $2.99 Quantity discounts available QuantityPrice SKU: 151-83 This item is IN STOCKCurrent Stock: 88 Quantity -+ Add to Cart Details Specs Inner Diameter: 39mm Supported Models QMB139 50cc/49cc , Various unlisted makes/models DetailsSpecsSupported Models Back Universal Parts Stock 39mm Cylinder Head Gasket for 50cc 4-stroke QMB139 engines. Back Inner Diameter: 39mm Back QMB139 50cc/49cc , Various unlisted makes/models