SeaStar Wheel Shaft Bushing Adapter, 3/4 Inch to 1 Inch Taper, HB0572

The SeaStar HB0572 is a wheel shaft bushing adapter that lets a boat owner mount a 1 inch taper steering wheel onto a 3/4 inch tapered steering shaft. It is a tapered adapter, meaning it steps the shaft diameter up so that wheels bored for the larger 1 inch taper standard can be fitted securely to helms built around the smaller 3/4 inch taper shaft. This type of bushing is a common accessory item stocked alongside SeaStar and BayStar helm pumps and steering wheel hardware kits, since wheel bore size and helm shaft size do not always match between different equipment generations and brands. The adapter is a simple, purpose-built machined part with no moving components, so installation follows the same wheel-mounting procedure as a direct-fit tapered wheel: the bushing seats between the shaft and the wheel hub before the retaining nut and hardware are tightened down. Because it is a genuine SeaStar part identified by number HB0572, it is manufactured to match SeaStar's own taper specifications, giving a predictable fit compared to a generic aftermarket bushing. At 0.06 pounds, the HB0572 is a small, lightweight hardware item intended to be paired with a compatible steering wheel and the appropriate wheel hardware kit at installation.

Specifications

• Brand: SeaStar
• Manufacturer Part Number: HB0572
• Product Type: Wheel Shaft Bushing Adapter
• Bushing Size & Type: 3/4 inch to 1 inch Taper
• Weight: 0.06 pounds
• UPC: 731957801425

Frequently Asked Questions

What does the SeaStar HB0572 bushing adapter do? It adapts a 3/4 inch tapered steering shaft so that a steering wheel bored for a 1 inch taper can be mounted on it, letting mismatched shaft and wheel taper sizes fit together.

What size shaft and wheel bore does HB0572 work with? HB0572 is sized for a 3/4 inch taper shaft on one side and a 1 inch taper wheel bore on the other, so it bridges those two common taper sizes.

Is HB0572 a genuine SeaStar part? Yes, HB0572 is the SeaStar manufacturer part number for this wheel shaft bushing adapter, not a generic aftermarket substitute.

How much does the HB0572 bushing weigh? The SeaStar HB0572 wheel shaft bushing adapter weighs 0.06 pounds.

Do I need any other hardware to install the HB0572 adapter? The HB0572 bushing installs between the steering shaft and the wheel hub as part of the standard wheel-mounting hardware, so it should be paired with a compatible steering wheel and the wheel hardware kit for your installation.

Is there a version of this adapter for a straight 1 inch shaft instead of a taper? Yes, SeaStar's related part HB0573 is a 3/4 inch taper to 1 inch straight adapter, which is a different part number from the HB0572 taper-to-taper version.

Will HB0572 fit any steering wheel with a 1 inch taper bore? The HB0572 adapter is built to SeaStar's 1 inch taper specification, so it is intended for wheels bored to that same 1 inch taper standard.

What is the difference between HB0572 and a wheel hardware kit like SA27454P? HB0572 is only the shaft bushing adapter itself, while SA27454P is a separate wheel hardware kit (mechanical) used to secure the wheel to the shaft; they are distinct part numbers that may be used together.

Is the HB0572 adapter compatible with BayStar helms as well as SeaStar helms? HB0572 is listed as a SeaStar part; BayStar and SeaStar share a common helm pump service kit (HP6032), but buyers should match HB0572's 3/4 inch to 1 inch taper sizing to their specific helm shaft and wheel bore.

What material is the HB0572 bushing made of? The dossier for the SeaStar HB0572 does not specify the bushing material.