Mechanical Fuel Pump Compatible with Chevrolet 327, 409, 400, 348, 307, 305, 283, 267, 302, 350l, Replaces# M4891, 12355613, SP1321MP Item Description About this item [Compatible with] Compatible with Chevrolet 327, 409, 400, 348, 307, 305, 283, 267, 302, 350. [Replaces Part Number] M4891, SP1321MP, 12355613. [Specifications] Inlet Fitting Thread Size: 1/4" - 18 NPSF; Outlet Fitting Thread Size: 1/4" - 18 NPSF; Inlet Quantity: 1; Outlet Quantity: 1; Gasket Included: Yes; Maximum Pressure: 7.3 PS; Minimum Flow Rating: 40 GP. [Function] The advanced manufacturing technology features good plasticity and high impact resistance, effectively improving the performance and efficiency of the engine and ensuring that the oil circulates in the lubrication system. [Note] Please check the products as much as possible before purchasing to avoid incompatibility. Please feel free to contact us if you have any questions. Show more Payment We accept payment only through the Payment system. Shipping Most products are usually shipped within 1-2 business days from the date of being ordered. We do ship worldwide via the International Shipping Program. For an international shipment quote, please add add item to cart and attempt checkout. will supply the international shipping price. Return We do not accept returns except in certain, unlikely circumstances.