1984 Post 43 Sportfish for Sale – 43 ft – San Diego, CA, United States

Infinity Yacht Sales - Yacht Broker Logo
Infinity Yacht Sales

Key Features of This Yacht

Manufacturer

POST

Fuel Type

DIESEL

Length

43 ft

Year

1984

Model

43 Sportfish

Boat Type

Power

Vessel Description

1984 Post 43 Sportfish – “UN DIA”

Twin Detroit Diesel 6-71T | Fresh Rebuilds | Updated Electronics | Well-Maintained Classic Sportfish

“UN DIA” is a classic 1984 Post 43 Sportfish that blends timeless lines with the reliability and performance that made Post Yachts legendary. Known for their sturdy build, sharp entry, and efficient cruising speed, the Post 43 remains a sought-after platform for serious anglers and cruisers alike.

Powered by twin Detroit Diesel 6-71T engines, this vessel delivers the kind of dependable performance that only these proven workhorses can provide. Both engines have been professionally rebuilt—the port engine in 2020 (approx. 45 hours) and the starboard in 2024 (approx. 15 hours)—ensuring many more years of reliable service. The 6-71 series is renowned for its longevity, ease of maintenance, and worldwide parts availability, making this a power package trusted by boaters everywhere.

In June 2025, “UN DIA” was hauled out for fresh bottom paint, Props tuned,  Prop Speed, and Cutlass Bearings replaced on both props, along with miscellaneous maintenance items to keep her in prime operating condition. While she has spent the last 16 years in saltwater, the majority of her life was enjoyed in freshwater, stored safely in a covered boathouse, contributing to her overall solid condition. You'll find her Gelcoat to be in much better condition than similar boats of her age. 

At the helm, you’ll find a new Simrad multifunction display featuring Radar, Plotter, and Depth Sounder, paired with a stand-alone Simrad Autopilot for precise and effortless navigation. These modern upgrades make “UN DIA” equally ready for offshore fishing trips or comfortable coastal cruising.

The Post 43 offers a practical and spacious layout—large cockpit, wide side decks, and a well-appointed salon with galley and two staterooms—ideal for weekend adventures or extended stays aboard.

Whether you’re chasing tuna offshore, cruising the coast, or enjoying sunset runs with family and friends, “UN DIA” delivers the performance, pedigree, and comfort that define the Post Yachts legacy.

Additional Information

The Company offers the details of this vessel in good faith but cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. A buyer should instruct his agents, or his surveyors, to investigate such details as the buyer desires validated. This vessel is offered subject to prior sale, price change, or withdrawal without notice.

Yacht Specification

Vessel Name

UN DIA

Length

43 ft

Beam

15.58 ft

Manufacturer

Post

Model

43 Sportfish

Year Of Vessel

1984

Boat Type

power-sportfish

Fuel Type

Diesel

Engine Make

Detroit Diesel

Engine Model

6-71 T

Engine Hours

Engine 1: 45, Engine 2: 15

Engine Type

Inboard

No. of Fuel Tanks

0

No. of Engine

2

Other Yachts From Broker

View All
2005 Sea Ray Sundancer 280 yacht for sale in

2005 Sea Ray Sundancer 280 28 ft

Power | Pre-owned | Gasoline

$39,900

1990 Carver 3467 Santego yacht for sale in

1990 Carver 3467 Santego 42 ft

Power | Pre-owned | Gasoline

$59,900

2007 Sea Ray Sundancer 310 yacht for sale in

2007 Sea Ray Sundancer 310 33 ft

Power | Pre-owned | Gasoline

$99,500

About 1984 Post 43 Sportfish

This 1984 Post 43 Sportfish is a premium power category boat currently located in San Diego, CA, United States. It is powered by 2 Detroit Diesel engines. With a beam of 15.58 ft, it's an ideal choice for buyers seeking Diesel powered boats with efficient layouts.

Listed by

Infinity Yacht Sales

Visit Website