OEM corrrect fit part.  We only offer the OEM part. Cushman has used this Master Cylinder on many models from the 1980's to Present. Part numbers that may be in your parts book are 887844. This is the correct bore and was the primary Master Cylinder used on certain Cushman vehicles. Directparts produces and distributes all of the parts you need for your Cushman vehicles. Visit our ebay store for special prices on other parts including New Long Blocks and rebuild kits for your twin cylinder Cushman OMC engines.