Marine Engine Repair & Rebuilding
Specialize in marine engine repair, rebuilding, and performance
Overview
Marine engine specialists charge $2,000-$15,000 for engine rebuilds plus hourly labor ($100-$150).
Rebuilding 30-80 engines annually generates $150,000-$600,000 with 50-70% margins.
In 2025, boat owners maintain expensive engines rather than replacing.
Services include inboard engine rebuilds ($3,000-$12,000), outboard motor service and rebuilds ($2,000-$8,000), diesel marine engine work ($4,000-$15,000), performance upgrades ($1,500-$6,000), engine diagnostics ($150-$400), and winterization/storage prep ($200-$600).
Successful specialists master marine engine systems, maintain parts for popular brands, offer warranty on rebuilds, provide pickup/delivery, and build reputation for quality work.
Can work from shop.
Marketing through marinas, boat dealers, marine surveyors, and boating community.
Required Skills
- Marine Engine Rebuilding
- Engine Diagnostics
- Marine Diesel
- Parts Sourcing
- Shop Management
- Quality Control
Pros and Cons
Pros
- High-value service work
- Boat owners maintain vs replace engines
- Specialized expertise in demand
- Can focus on specific engine types
- Strong margins on rebuilds
Cons
- Need extensive engine rebuilding skills
- High parts inventory investment
- Seasonal demand patterns
- Long rebuild timelines
- Warranty liability on engine work
How to Get Started
- Master marine engine rebuilding
- Set up engine shop with tools
- Establish marine parts suppliers
- Market to marinas and boat owners
- Offer engine pickup and delivery
- Provide warranty on rebuilds
- Build reputation through quality work
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