The bolt patterns are universal.Fit top bolt pattern of outboard. Fits great and adds strength to your transom. Helps balance and distribute stress of your outboard engine bolts. This support plate should be standard on all outboards for adding transom support. Simple Installation:Directly install to the top bolt holes of outboard engines. Specification:-1 [Application]Universal for most outboards engines with the same bolt mounting patterns. [High Performance]Designed to distributes stress of outboard engine bolts for added transom support, protecting the transom from damage. [Product Features]Fit top bolt pattern of outboard. The 13inch bolt hole pattern fits standard top bolt holes. [Superior Material]Made of highest quality cast Aluminum, prevent and rust, ensures construction and long-lasting performance. Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Colour:As Shown Material:aluminum Package Contents: 1 x Engine Transom Support Plate Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.