HPT | F5 98103 Turbocharger — 98mm Compressor / 103mm Turbine

The HPT F5 98103 Turbocharger is a serious large-frame turbo option for high-output engine combinations where airflow, turbine control and durability matter. With a 98mm compressor wheel and 103mm turbine wheel, the F5 98103 sits in the kind of turbo category suited to big-power V8, 2JZ, Barra, RB, billet block and high-capacity turbo applications.

HPT lists the F5 98103 with a 2618 forged compressor wheel, air-cooled full complement ball bearing design, aluminium bearing housing with integrated backing plate, stainless steel turbine housing options, speed sensor provision and a pre-installed Turbosmart oil feed filter. That combination makes it a strong choice for race cars and serious street/strip builds where response, durability and serviceability all matter.

The F5 98103 is available with multiple stainless turbine housing options, including

T6 inlet / V-band discharge housings in 1.12 A/R, 1.24 A/R and 1.40 A/R, plus 
V-band inlet / V-band discharge housings in 1.15 A/R and 1.28 A/R. That gives engine builders and tuners room to match the turbo to the intended engine size, boost target, exhaust energy, converter/manual setup and racing style.

For Prime Speedworks customers, this is the kind of turbo that belongs in a properly planned package — not just bolted on because the number sounds tough. Correct turbine housing selection, wastegate sizing, manifold design, fuel system, ECU strategy, intercooler sizing and oil feed/drain setup all need to be considered if the goal is a reliable, repeatable high-horsepower combination.

Key features

• HPT F5 series large-frame turbocharger
• 98mm compressor wheel
• 103mm turbine wheel
• 2618 forged compressor wheel
• Full complement ball bearing centre section
• Air-cooled design
• Aluminium bearing housing with integrated backing plate
• Stainless steel turbine housing options
• Speed sensor provision
• Pre-installed Turbosmart oil feed filter
• Available with T6 inlet or V-band inlet turbine housing options
• Built for serious drag, roll-racing, circuit and high-horsepower street/strip turbo combinations
• Racing use only / not legal for road use as noted by vendor

Technical specifications

Turbine housing options

Application / fitment notes

The HPT F5 98103 is best suited to serious high-output turbo engine combinations where the supporting package is already planned around large-frame airflow. It may suit applications such as:

• Big-power LS / LT V8 builds
• Toyota 2JZ race builds
• Ford Barra race builds
• Nissan RB high-output builds
• Billet block and aftermarket block combinations
• Drag racing, roll racing, dyno competition and dedicated motorsport use

Before ordering, confirm:

• Target horsepower and boost pressure
• Engine displacement and RPM range
• Fuel type
• Manifold flange type
• Turbine housing A/R
• Wastegate size and control strategy
• Intercooler and charge pipe sizing
• Oil feed and oil drain layout
• Speed sensor requirement
• Converter or gearbox setup
• Available engine bay space

The vendor notes that product photos show an HPT F5 88 turbocharger with a T6 housing as a close representation of the F5 98, so final appearance may vary from the images shown.

Why buy from Prime Speedworks

Prime Speedworks does not treat a turbocharger like a generic bolt-on. On a turbo this size, the result depends heavily on matching the unit to the engine, turbine housing, converter, fuel system, ECU, exhaust manifold and intended racing use.

We work with Australian workshops, racers and high-horsepower street car builders who need the correct combination, not just the largest turbo on the shelf. With HPT Turbochargers, Prime Speedworks can help customers choose the right frame, compressor size, turbine housing and supporting components so the package makes sense from the start.