This used brake master cylinder is a direct replacement for your Chevrolet B60 83-86 88-91 C4500 Kodiak 03-09 M630274. It comes with a master cylinder cap and has a bore diameter of 2 inches. This factory/OEM part has been manufactured in Taiwan and has OE/OEM part numbers 130.82007, M630274, MC390565, F141605, F140746, 15142243, 15500481, 15007799, 15142243, 815142230, 19301987, 108041, 108041, 138041, 13-8041, 15007799, 19301986, 1514224. Any questions please

Ask. Thanks!