One of the finest 510 Sundancers on the market — freshwater kept from 2018 until just recently, professionally captain maintained, and owned by experienced boaters its entire life. The condition reflects it. Extensive pod and engine work completed in 2026 makes this a true turnkey boat, and the upgrades/services set it apart.
The Platform
Sea Ray's "Depart the Cave" design philosophy is executed exceptionally well on the 510 — a bright, open, climate-controlled helm and salon that keeps you connected to the water without the hassle of canvas. Sliding salon doors open fully to port, blurring the line between cockpit and interior. Hardwood walnut floors, raised ultraleather seating, and a swiveling double-wide helm seat that converts the upper salon into a social space. Below, an atrium design keeps the lower salon open and airy — galley forward, day head accessible from both the VIP and lower salon, and a master aft with split head and vanity for simultaneous use.
The Drive
Powered by Cummins QSC 8.3L 600s with Zeus pods, the 510 reaches approximately 34 knots at WOT and handles with precision. The Zeus system fully articulates — no propeller-to-rudder lag, just immediate response, tight turning radius, and a sport-boat feel. In hard turns the boat banks confidently while the hardtop skylights keep the horizon in view. Automatic trim tabs, BoatMate wireless joystick, Skyhook, and autopilot round out one of the most capable docking and maneuvering systems in the class.
Recent Services
Pod and engine work (04/2026): starboard pod steering actuator, reseal port pod gearcase, new vertical and horizontal pod coolers, pod anodes, generator cooling system de-scaled and flushed, reseal turbo waste gates, replace port hydraulic steering pump, port drive shaft, exhaust seals
Pod and engine work (09/2024): skegs, steering actuator seal (port), input shaft, fluid level sensor (starboard), transmission seal, resealed pod drive shafts, reverse shift solenoid (starboard), exhaust temp sensor, aftercooler service, thermostats, engine zincs
Engine, generator, and transmission oil services and filters (2026)
Bottom paint (04/2026)
Full detail, buff, and wax (02/2025)
Equipment & Upgrades
New AC units — master and lower salon (2020)
New stove (2024)
New cockpit table finish and custom solid oak salon table
Upgraded smart TVs — salon, sunroom, and master
Bose soundbar and upgraded Polk speakers
Upgraded Portland mattress (master)
Raymarine electronics — dual E125W displays and radar
Fish finder
Fusion Bluetooth stereo (2019)
WiFi access point
DSS satellite TV system
Cockpit teak decking (2019)
Blue LED courtesy lighting and multi-color transom lighting
Underwater transom lighting
Electric cockpit sunshade
Cockpit ice maker and grill
Hydraulic swim platform
Shore power isolation transformer
Washer/dryer combo
Spare prop set (one pod)
Flushing seacocks — engines, generator, and AC
Walnut interior cabinetry
Below Deck
The aft master features a split head and vanity, lift-up berth with substantial storage, and a large TV with soundbar. The forward VIP has an electrically actuated bed, TV, and ensuite day head access. The engine room is impressively spacious for this class — organized plumbing, oil change system, battery management, and full DC breaker panel.
The 510 Sundancer is a proven platform. This one is ready to go.
Specifications
Build
Condition
Used
Category
Power
Hull material
Fiberglass
Drive type
Other
Dimensions
Length overall
51'
Beam
14'
Accommodations
Cabins
2
Heads
2
Performance
Total power
1,148 hp
Tanks
Fuel
400 gal
Water
110 gal
Holding
60 gal
Engines
2 × Cummins QSC 8.3L 600
574 hp each · Diesel · 1,200 hrs
All Photos
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