The HK Holden was first introduced by General Motors Holden’s in Australia during January of 1968, as a replacement to the Holden HR series that had started production two years prior. The HK series brought about a wide range of options and mechanical features, making it the most influential Holden model thus far. The HK Holden was in fact larger, heavier and lower than the previous model series, as well as included thirteen models as opposed to the HR series’ eight models. However, the HK series was only in production for a year, after producing 199,039 units. It was replaced by The Holden Ht is 1969.

At first, the HK Holden series was offered in three trim levels. Each stage had the four-door sedan and the five-door station wagon body styles as options. These levels were the Belmont, The Kingswood and the Premier. The first two were knew names given to replace the old monikers “Standard” and “Special” that have been used by the car company ever since the year 1953. However, the name “Premier” was kept to mean the more luxurious top of the line models that had decidedly a little more added features than the other two.

On the whole, the HK Holden series were identifiable through several features. For instance, there was the all new body that had a distinct flare over the wheel arches. There was also the “HOLDEN” badge that was emblazoned at the lower right of the front grille. As well as the grill that did not have any inset turn signal indicators akin to the HR Holden (they held out their hands from the window to indicate direction if they needed to turn), the slime–line wrap–around rear light and the wrap–around front indicators that were mounted under the front bumper.

The HK Holden was also amass with different gadgets and devices, such as the turn signal lamps, high beam warning lamp, the petrol gauge, generator charge warning lamp, speedometer, water temperature warning lamp and an oil pressure warning lamp. All the models in the HK Holden series also had the option to add the gadget cluster incorporating the oil pressure, ammeter and water temperature gauge.

The HK Holden had several kinds of engines with different capacities. There was the 161 engine (2.64 L) with the 2638cc capacity, the 186 engine (3.07 L) with the 3048cc capacity, the 186s engine (3.07 L) with the 3048cc capacity, the 307 V8 engine (5.04 L) with 307 cubic inch capacity and the 327 V8 engine (5.36 L) with 327 cubic inch capacity. Vehicle consisted of the manual transmissions: 3-speed Holden standard gearbox, 3-speed M15 L-6 gearbox, 3-speed M15 V8 gearbox, 4-speed Opel gearbox, 4-speed Chev M21 gearbox, 4-speed Chev M22 gearbox. There was also the 2–speed Powerglide automatic transmission.

In addition, the HK Holden also saw the release of another variety of commercial vehicles, far from the utility and panel van. In July 1968, the HK sedan and three coupe models were released. These were the Brougham sedan, the Monaro coupe, Monaro GTS coupe and the Monaro GTS 327 coupe.