Heavy-duty stainless steel outboard engine bracket — 140-300 HP
€2.584,95
incl. VAT 25.5%
Made in Italy
Heavy-duty stainless steel engine support bracket — auxiliary motor mount for outboards from 140 to 300 HP. Marine-grade AISI 316 stainless, designed to hold a serious second engine on the transom or swim platform.
- Rated for outboards 140-300 HP — covers most twin-engine secondary motors
- Marine AISI 316 stainless — no rust, no maintenance, lifetime construction
- Through-bolt mounting to transom — heavy stainless hardware included
- Robust frame engineered for full thrust load + heeling forces
Use cases: Twin-engine installs needing a beefier secondary mount, replacing tired aluminium brackets, fishing-boat outboard upgrades. €2585 reflects industrial-grade engineering — this isn't a generic motor mount.
In stock — ships within 1–2 business days
Free shipping on orders over 100€ · Free returns within 14 days
Use cases
Twin-engine secondary mount
For boats running twin outboards, this bracket holds the secondary motor while the main is on the transom. Stainless construction handles the higher HP loads.
Heavy outboard upgrade
Upgrading from 100 HP to 200+ HP? The old aluminium bracket is rated for the smaller motor. This stainless bracket handles the bigger engine without fatigue cracking.
Replacement of corroded brackets
Aluminium brackets corrode in saltwater (5-7 year lifespan). AISI 316 stainless lasts decades — one bracket purchase, lifetime install.
Specifications
| For outboard up to | From 140 to 300 HP |
| Brand | Osculati |
| Type | Auxiliary engine support bracket |
| Engine compatibility | Outboards 140-300 HP |
| Material | AISI 316 stainless steel |
| Hardware | Stainless steel through-bolts (included) |
| Mount | Transom or extended swim platform |
| Made in | Italy |
Installation guide
1
Confirm engine HP compatibility
Rated for 140-300 HP outboards. Smaller outboards (<140 HP) are over-bracketed and waste budget; larger (>300 HP) exceed structural rating.
2
Locate the transom mount
Bracket bolts through the transom — locate on a structural area (transom knee, stringer extension). Avoid mounting through unreinforced fibreglass.
3
Drill and bed bolt holes
Use the supplied stainless bolts. Bed each hole in marine sealant (3M 4200 or A-Tec) to prevent water ingress to transom core.
4
Mount the engine
Secure the outboard to the bracket using its standard mounting bolts. Torque to engine manufacturer spec — usually 35-50 ft-lb.
5
Wire control cables
Run throttle/shift cables and battery wiring along the bracket frame. Use protective conduit for wire passes.
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