1978 Mercury 650XS Racing Outboard Motor – Rare Vintage High-Performance Boat Engine (Used)

Own a true piece of Mercury racing history with this 1978 Mercury 650XS Racing Outboard Motor, one of the most sought-after vintage performance outboards ever produced by Mercury Marine. Built for speed, competition, and exceptional on-water performance, the legendary 650XS remains highly desirable among collectors, restorers, vintage racing enthusiasts, and classic boat owners.

Designed specifically for high-performance boating, the Mercury 650XS combines lightweight construction with Mercury’s proven engineering to deliver rapid acceleration, impressive top-end speed, and dependable performance. Whether you’re restoring a classic racing boat, expanding a vintage marine collection, or searching for an authentic Mercury racing engine, this rare outboard represents an outstanding investment.

This engine retains its original identification numbers:

• Clamp Number: 4304433
• Block Number: 69527

Its originality makes it an attractive option for collectors seeking authentic Mercury racing components.

The Mercury 650XS became well known for its competitive success in tunnel boat racing and other high-performance marine applications during the late 1970s. Even decades later, these engines continue to command attention due to their rarity, historical significance, and outstanding engineering.

At EZ Boats Marine, we specialize in sourcing unique, collectible, and high-performance outboard motors alongside modern marine engines. Our team can provide additional information, assist with shipping arrangements, and answer compatibility questions before purchase.

Key Features

• Genuine Mercury 650XS Racing Outboard
• Rare 1978 vintage model
• High-performance racing engine
• Ideal for collectors and restorers
• Excellent for classic racing boats
• Authentic Mercury Marine engine
• Original clamp number included
• Original block number included
• Highly desirable collector’s item
• Suitable for vintage marine restoration projects

Technical Specifications

• Brand: Mercury Marine
• Model: 650XS
• Model Year: 1978
• Engine Type: Racing Outboard
• Application: High-Performance / Vintage Racing
• Condition: Used
• Clamp Number: 4304433
• Block Number: 69527

Why Buy from EZ Boats Marine?

When you purchase from EZ Boats Marine, you’re buying from experienced marine professionals committed to supplying quality outboard motors for every application—from collectible vintage racing engines to modern offshore power. We provide expert customer support, secure worldwide shipping, and assistance throughout the buying process.