Attwood Marine Keel Roller Bracket, For 5/8 in Roller Shaft

Overview

This Attwood Marine keel mounting bracket is a one-piece roller bracket for boat trailers that need a secure keel roller support with vertical adjustment. It works with a 5/8 inch roller shaft, mounts with a 1/2 inch bolt, and uses a 5 inch slot so the roller height can be set to match the boat's keel line and trailer geometry.

This bracket range is useful when replacing a worn keel roller bracket, rebuilding a trailer support point, or setting up a roller position for smoother launching and retrieval. Match the size and slot-center measurement to the trailer crossmember, existing roller shaft, and keel roller location before installation.

Key features

• One-piece roller bracket construction for keel roller support on boat trailers.
• 5 inch vertical adjustment slot helps set the roller height against the hull's keel line.
• Accepts a 5/8 inch roller shaft for standard keel roller setups.
• Mounts with a 1/2 inch bolt, so the bracket can be fitted to a suitable trailer crossmember or mounting point.
• Available in 5 inch, 10 inch, and 12 inch bracket sizes to match different trailer layouts.

Variants

The Attwood Marine keel mounting bracket is offered in three configurations. The bracket size and slot-center measurement vary, while the 5 inch vertical adjustment slot, 1/2 inch mounting bolt requirement, and 5/8 inch roller shaft fitment remain consistent across the range.

Use the slot-center measurement to compare against the trailer's existing bracket position or planned roller location.

• 11370-1: 5 inch bracket with 2-3/4 inch slot center. This shorter bracket fits compact keel roller positions where the roller sits closer to the mounting point.
• 11371-1: 10 inch bracket with 8-3/16 inch slot center. This mid-length version gives more reach for trailer setups that place the keel roller farther from the crossmember.
• 11372-1: 12 inch bracket with 10-1/8 inch slot center. This longer version supports layouts that need additional spacing between the mounting point and roller location.

Installation and fit

Before fitting the bracket, confirm the roller shaft diameter, bracket size, slot-center measurement, and available mounting surface on the trailer. The 5 inch slot allows vertical adjustment, which is important for keeping the roller aligned with the keel rather than letting the hull load unevenly on one side of the trailer.

After installation, check that the roller turns freely on the shaft and that the bracket is tightened securely before launching or towing. Recheck the hardware after the first few trips, especially on trailers used for ramp launching, fishing trips, or frequent coastal towing.

Use on board and around the trailer

This bracket is a practical replacement part for trailer owners maintaining keel roller supports on small boats, fishing boats, runabouts, and other trailered vessels. It is most relevant when the boat needs better keel support during retrieval, storage, and road transport.