Features: 1.Part Number: According to the original factory specifications, replacing reference part number is FSM051 HC5345 HS5167. 2.Strong Compatibility: Fits for mount cylinder parts HC5340, HC5341, HC5342, HC5343, HC5344, HC5345, HC5346, HC5347, HC5348, HC5358, HC5365, HC5375, HC5394, HC5445, HC6750 etc. 3.High Performance: This hydraulic seals kit is specially designed for the trim cap of the pivot/front mounted hydraulic steering cylinder on outboard engine to repair leaking or weeping cylinder seals. 4.Application: Seal kit fits most outboard boats with single or twin engines. Used to replaces damaged or old parts on your boat and the caps can be resealed without any issues. 5.Long Durability: Made of top quality rubber, will not rust, wear resistant, high precision, ensures long term reliable service. Specification: Item Type: Steering Cylinder Seal Kit Material: Rubber Part Number: FSM051 HC5345 HS5167. Great Compatibility: Fits for mount cylinder parts HC5340, HC5341, HC5342, HC5343, HC5344, HC5345, HC5346, HC5347, HC5348, HC5358, HC5365, HC5375, HC5394, HC5445, HC6750, HC6751, HC6752, HC6753, HC6754, HC6755. Seal Kit for HC5345, HC5340 and HC5342 (threaded end gland), HC5347 (for Pivot Cylinder, for 115-130 specific), HC5348 (for Pivot Cylinder, for OMC 77-90 specific), HC5365 (for Compact Cylinder (threaded end gland))and HC5394 (for Searay Compact Cylinder (obsolete) (threaded gland)). Application: Suitable for pivot/front hydraulic steering cylinders on outboard engines, most outboard boats with single or twin engines. PackageList: 8 x Seal Ring Note: 1. Please double check the part number of your item, matching information is for reference only. 2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!