Universal Parts Valve Guide O-ring $0.79 Quantity discounts available QuantityPrice SKU: 151-113 Restock: Limited Supply This item is IN STOCKCurrent Stock: 529 Quantity -+ Add to Cart Details Specs Supported Models QMB139 50cc/49cc , Various unlisted makes/models DetailsSpecsSupported Models Back Universal Parts Valve Guide O-ring for 50cc 4-stroke QMB139 engines. Back Back QMB139 50cc/49cc , Various unlisted makes/models