1965 Ford Mustang Coupe K-Code 289 5-Speed

Description

The 1965 Ford Mustang K‑Code represents one of the most significant performance milestones of the Mustang’s early years. Introduced as part of the original 1965 lineup, the K‑Code option — known as the “Hi-Po” (High Performance) 289 — delivered 271 horsepower, making it the most powerful small‑block engine available in a first‑generation Mustang.

Unlike the standard 289, the K‑Code featured heavy‑duty internals including a solid‑lifter camshaft, stronger pistons, and a higher‑capacity carburetor, giving the lightweight Mustang a spirited, track‑ready character. K‑Code cars were only available with a four‑speed manual transmission and included upgraded suspension, steering, and exhaust components.

This 1965 K-Code Coupe is said to have received a multi-year refresh completed in 2017. Upgrades included fresh Rangoon Red paint, reupholstered red vinyl seats, white vinyl door trim and rear interior quarter panels, a refurbished red padded dashboard with a white-painted face, white headliner, Hi-Po-spec cylinder heads, a Holley Street Warrior carburetor, and 15” five-spoke Scott Drake wheels. Additional upgrades in 2020 included installation of a T5 five-speed manual transmission, Moser rear end (3.50:1 ratio), Wilwood front disc brakes, Flowmaster mufflers, and Sanderson headers. A Rally Pac-style 8,000-rpm tachometer and clock package was installed in September 2025.

This refreshed and upgraded ’65 K-Code Mustang is now offered with a car cover, two sets of keys, and a clean California title in the seller’s name.

Highlights

• Factory K-Code High Performance 289ci V8 engine originally rated at 271 hp and 312 lb-ft. of torque

• T5 five-speed manual transmission

• Early 1965 Mustang (often referred to as 1964.5) with generator/no alternator

• Refinished in Rangoon Red paint over reupholstered red vinyl seats

• Several performance upgrades (see below)

Factory Equipment

• High Performance 289 fender badges

• Front bucket seats

• 120-mph speedometer with fuel level and water temperature gauges

• Heater

• The chassis number (5F07K193618) decodes as:

  • 5 – 1965 model year

  • F – Dearborn (Michigan) assembly plant

  • 07 – Coupe (hardtop)

  • K – 289 hi-po V8 4bbl 271 hp

  • 193618 – Sequential production number

Modifications

• Rear dealership badge from Tasca Ford

• Rally Pac-style 8,000-rpm tachometer and clock package installed in September 2025

• Upgrades by previous owner in 2020 included:

  • T5 five-speed manual transmission

  • Moser rear end (3.50:1 ratio)

  • Wilwood front disc brakes

  • Flowmaster turbo-style mufflers

  • Sanderson stainless steel headers

• Multi-year refresh (completed in 2017) included:

  • Refinished in Rangoon Red paint

  • Refurbished red padded dash and white interior

  • Reupholstered red vinyl seats

  • White vinyl door trim and rear interior quarter panels

  • White headliner

  • Hi-Po-spec cylinder heads

  • Holley Street Warrior four-barrel carburetor

  • 15” five-spoke Scott Drake wheels

  • Radio deleted

Servicing & Documentation

• September 2025: Replaced shocks

• July 2025: Replaced battery, spark plugs, oil, and transmission fluid

• Milestar redline tires

Known Imperfections

• Cosmetic imperfections consistent with age (see photo gallery)

Ownership History

The seller of this K-Code Mustang purchased it in November 2024.

Included Items

• Two sets of keys

• Car cover

• Spare tire