Images may be for reference only
Product Details
The Turbosmart FPRF8 Black Fuel Pressure Regulator with Integrated Fuel Filter (TS-0404-1532) is a premium fuel management solution designed to deliver precise fuel pressure regulation, high-flow performance, and effective fuel filtration in one compact assembly. Featuring -8AN inlet, outlet, and return connections, an adjustable 35–80 PSI base fuel pressure range, true 1:1 manifold-referenced regulation, and an integrated washable 10-micron stainless steel fuel filter, the FPRF8 is engineered for demanding street performance and motorsport applications.
Developed for high-performance fuel systems, the Turbosmart FPRF8 combines two essential components into a single unit. By integrating the fuel pressure regulator and fuel filter, this innovative design simplifies fuel system plumbing, reduces the number of separate components required, and provides a clean installation for custom engine builds.
The FPRF8 utilizes Turbosmart's proven fuel pressure regulator technology, incorporating a stainless steel valve seat and motorsport-grade diaphragm to provide accurate and consistent pressure regulation. These components are designed to withstand the demands of high-flow fuel systems, including those using gasoline, ethanol-based fuels, methanol, and racing fuels.
One of the defining features of the TS-0404-1532 is its true 1:1 pressure reference ratio. This allows fuel pressure to increase proportionally with intake manifold boost pressure, helping maintain a consistent pressure differential across the fuel injectors.
For example, when the regulator is set to 43.5 PSI base pressure, a properly functioning system should target approximately 53.5 PSI of fuel pressure at 10 PSI of boost, provided the fuel pumps and supporting components can maintain the required pressure and flow.
This capability is particularly important for turbocharged and supercharged engines, where accurate fuel pressure control is essential for consistent injector performance and reliable engine operation.
The integrated 10-micron stainless steel mesh filter helps protect downstream fuel system components from contaminants while maintaining high fuel flow. Unlike conventional disposable fuel filters, the stainless steel cartridge is washable and serviceable, making it an excellent option for performance enthusiasts who prioritize long-term maintenance and reliability.
Designed for fuel systems supporting up to 2,000 horsepower, the FPRF8 offers the flow and bypass capacity required for many high-output engine combinations. Its -8AN connections provide a practical solution for performance builds requiring substantial fuel delivery without the larger plumbing associated with -10AN systems.
The regulator also features a 1/8-inch NPT pressure gauge or sensor port, allowing installation of a compatible mechanical gauge or electronic fuel pressure transducer. This provides convenient pressure monitoring during installation, tuning, and normal operation.
A unique locking collar design helps maintain the integrity of the regulator assembly, while the black exterior finish complements modern performance engine bays.
For Honda and Acura enthusiasts, the FPRF8 is an attractive option for custom turbocharged K20, K24, and B-Series engines utilizing upgraded fuel pumps, injectors, fuel rails, and return-style fuel systems.
Whether upgrading a high-horsepower street car, building a dedicated drag racing vehicle, or simplifying a custom motorsport fuel system, the Turbosmart FPRF8 TS-0404-1532 provides a premium combination of fuel pressure control, high-flow filtration, and durable construction.
Features
Turbosmart FPRF8 Series: High-performance fuel pressure regulator with integrated filtration.
Combined Regulator and Filter Assembly: Integrates two essential fuel system components into one unit.
-8AN Fuel Inlet: Designed for compatible high-flow fuel supply systems.
-8AN Fuel Outlet: Provides a large-diameter regulated fuel connection.
-8AN Fuel Return Connection: Supports return-style fuel pressure regulation.
35–80 PSI Adjustable Base Pressure: Allows precise adjustment for compatible fuel injection systems.
True 1:1 Pressure Reference Ratio: Maintains the intended relationship between manifold pressure and fuel pressure.
Up to 2,000 HP Fuel System Support: Designed for demanding high-performance applications.
Integrated 10-Micron Fuel Filter: Helps capture contaminants before they reach downstream components.
Washable Stainless Steel Filter Element: Provides a serviceable filtration solution.
High-Flow Filter Design: Designed to minimize restriction while providing effective filtration.
Stainless Steel Valve Seat: Provides durability and consistent regulator operation.
Mil-Spec Diaphragm: Designed for reliable pressure response and broad fuel compatibility.
1/8-Inch NPT Gauge Port: Accommodates a compatible fuel pressure gauge or electronic sensor.
Unique Locking Collar Design: Helps maintain secure regulator assembly construction.
Broad Fuel Compatibility: Suitable for gasoline, ethanol blends, methanol, race fuel, and aggressive leaded fuels.
Black Exterior Finish: Provides a clean appearance for custom engine compartments.
Reduced Plumbing Complexity: Eliminates the need for a separate fuel filter housing in suitable installations.
Fewer External Connections: Can reduce potential leak points compared with separate regulator and filter assemblies.
Return-Style Fuel System Compatibility: Designed for applications utilizing a dedicated fuel return line.
Turbocharged Engine Compatibility: Supports boost-referenced fuel pressure regulation.
Supercharged Engine Compatibility: Suitable for appropriately configured forced-induction fuel systems.
Naturally Aspirated Performance Applications: Can be used in compatible high-flow fuel systems.
Serviceable Filtration System: Allows regular filter inspection and maintenance.
Universal Custom Fitment: Suitable for compatible aftermarket fuel system installations.
Additional Information
- Manufacturer: Turbosmart
- Part Number: TS-0404-1532
- Product Series: FPRF8
- Product Type: Fuel Pressure Regulator with Integrated Fuel Filter
- Configuration: Adjustable Bypass / Return-Style Regulator
- Finish: Black
- Fuel Inlet: -8AN
- Fuel Outlet: -8AN
- Fuel Return: -8AN
- Adjustable Base Fuel Pressure: 35–80 PSI
- Pressure Reference Ratio: True 1:1
- Advertised Fuel System Capacity: Up to 2,000 HP
- Integrated Filter: Yes
- Filter Rating: 10 Microns
- Filter Element: Washable Stainless Steel Mesh Cartridge
- Valve Seat: Stainless Steel
- Diaphragm: Mil-Spec
- Gauge / Sensor Port: 1/8-Inch NPT
- Compatible Fuels: Gasoline, Ethanol-Based Fuels, Methanol, Racing Fuels, and Leaded Fuels
- Fuel System Type: Return-Style
- Application: Universal / Custom Performance Fuel Systems
- UPC: 9329677034974
Integrated Fuel Pressure Regulation and Filtration
The FPRF8 combines an adjustable fuel pressure regulator and high-flow fuel filter in one assembly.
Traditional aftermarket fuel systems often use separate regulators and fuel filters connected through additional hoses and fittings.
By integrating both components, Turbosmart simplifies the plumbing required for compatible installations.
This design can reduce the number of external connections, improve component packaging, and provide a cleaner appearance.
It is especially beneficial in engine compartments where space is limited or where a streamlined fuel system is desired.
True 1:1 Fuel Pressure Regulation
The Turbosmart FPRF8 uses a true 1:1 manifold pressure reference ratio.
This means that fuel rail pressure is designed to increase by approximately 1 PSI for every 1 PSI increase in manifold boost pressure.
For example, with a base pressure of 43.5 PSI:
0 PSI Boost: Approximately 43.5 PSI fuel pressure.
10 PSI Boost: Approximately 53.5 PSI fuel pressure.
20 PSI Boost: Approximately 63.5 PSI fuel pressure.
30 PSI Boost: Approximately 73.5 PSI fuel pressure.
These examples assume sufficient fuel pump capacity, correct regulator setup, and properly configured pressure reference plumbing.
Maintaining the correct pressure differential across the fuel injectors helps ensure predictable fuel delivery.
Adjustable 35–80 PSI Base Pressure
The FPRF8 features an adjustable base fuel pressure range of 35–80 PSI.
This allows the regulator to be configured for a wide range of performance fuel injection systems.
Base pressure should be selected according to the fuel injector specifications and engine management calibration.
The 35–80 PSI adjustment range refers to the base pressure setting, not the maximum possible rail pressure during boosted operation.
Integrated 10-Micron Fuel Filter
The TS-0404-1532 includes a high-flow 10-micron stainless steel mesh filter.
This filter helps capture fine particles that could otherwise reach sensitive fuel system components.
Fuel injectors contain precision internal components that can be affected by contamination.
Proper filtration helps maintain reliable injector operation and reduces the risk of fuel delivery problems caused by debris.
The integrated design also eliminates the need for a separate filter housing in compatible installations.
Washable Stainless Steel Filter Cartridge
Unlike disposable paper-style filters, the FPRF8 uses a washable stainless steel filter element.
This allows the filter to be serviced during routine maintenance.
Regular cleaning and inspection help maintain fuel flow and prevent excessive restriction caused by accumulated contaminants.
The filter should be serviced according to Turbosmart's recommended maintenance intervals.
Up to 2,000 Horsepower Fuel System Support
Turbosmart rates the FPRF8 for fuel systems supporting up to 2,000 horsepower.
This reflects the regulator's intended flow and bypass capacity.
Actual horsepower support depends on the complete fuel system, including:
Fuel pump capacity.
Fuel type.
Fuel injector sizing.
Fuel rail configuration.
Fuel line diameter.
Electrical supply.
Operating fuel pressure.
Return line capacity.
The regulator does not generate fuel pressure or supply fuel independently.
The complete system must be designed to meet the engine's fuel requirements.
-8AN Fuel Connections
The FPRF8 is designed for fuel systems utilizing -8AN connections.
This size is commonly used in upgraded performance fuel systems requiring increased flow capacity.
The regulator features -8AN inlet, outlet, and return interfaces.
Correct fittings must be selected according to the manufacturer's port specifications.
Use fuel-compatible fittings and hoses rated for the intended operating pressure.
Broad Fuel Compatibility
The Turbosmart FPRF8 is designed for use with a broad range of fuels.
These include conventional gasoline, ethanol blends, methanol, racing fuels, and aggressive leaded fuels.
Its stainless steel valve seat and Mil-Spec diaphragm contribute to durability and compatibility with demanding fuel formulations.
All supporting components must also be compatible with the selected fuel.
Stainless Steel Valve Seat
The FPRF8 incorporates a stainless steel valve seat.
This component is essential to the regulator's ability to control fuel returning to the tank.
Durable valve seat construction helps maintain consistent operation under changing fuel pressure and flow conditions.
Mil-Spec Diaphragm
The regulator features a Mil-Spec diaphragm designed for responsive pressure regulation.
The diaphragm works with the internal spring and valve assembly to respond to changes in manifold pressure.
Accurate diaphragm response helps maintain the intended fuel pressure differential across the injectors.
1/8-Inch NPT Gauge and Sensor Port
The TS-0404-1532 includes a 1/8-inch NPT port for a compatible fuel pressure gauge or sensor.
This allows fuel pressure to be monitored during setup, tuning, and ongoing operation.
An electronic pressure sensor can also provide data to compatible aftermarket engine management systems.
When properly configured, ECU fuel pressure monitoring can help identify fuel delivery problems before they cause severe engine damage.
Return-Style Fuel System Requirements
The FPRF8 is designed for return-style fuel systems.
In this configuration, the regulator controls pressure by bypassing excess fuel back to the tank.
A complete installation may require upgraded fuel pumps, fuel rails, supply lines, return lines, fittings, and pressure monitoring equipment.
Vehicles originally equipped with returnless fuel systems may require additional modifications.
Fuel System Tuning Considerations
Changing fuel pressure can affect injector flow and engine fueling.
For this reason, the regulator should be installed and adjusted according to the requirements of the engine management system.
When upgrading a turbocharged engine, verify fuel injector calibration, fuel pump capacity, and pressure response under boost.
Professional tuning is recommended for high-output applications.
Turbosmart FPRF Series Comparison
FPRF6 – TS-0404-1522: Integrated fuel pressure regulator and filter for compatible -6AN fuel systems.
FPRF8 – TS-0404-1532: Integrated fuel pressure regulator and filter for compatible -8AN fuel systems, rated for applications up to 2,000 HP.
FPRF10 – TS-0404-1542: Integrated fuel pressure regulator and filter for compatible -10AN fuel systems, rated for applications up to 3,000 HP.
The correct model should be selected according to the fuel system's required flow capacity, plumbing dimensions, and operating conditions.
Common Reasons for Replacement
Inadequate Factory Fuel Pressure Regulation: Upgrades fuel systems requiring greater flow capacity.
High-Horsepower Engine Builds: Supports demanding fuel delivery requirements.
Turbocharger Upgrades: Provides boost-referenced pressure regulation for compatible forced-induction systems.
Supercharger Installations: Supports properly configured return-style fuel systems.
Fuel System Plumbing Simplification: Combines the regulator and filter into one assembly.
Replacing Separate Fuel System Components: Reduces the need for multiple standalone housings.
Fuel Pressure Instability: Provides an upgraded regulator when existing hardware is inadequate.
E85 Fuel System Upgrades: Suitable for properly configured ethanol-compatible systems.
Motorsport Fuel System Construction: Provides high-flow pressure regulation and filtration.
Damaged Existing Regulator: Replaces a worn or malfunctioning fuel pressure regulator.
Fuel Filtration Upgrades: Provides a washable stainless steel filter element.
Custom K-Series Turbo Builds: Supports high-output Honda and Acura fuel systems.
Return-Style Fuel System Conversions: Provides pressure regulation for compatible aftermarket conversions.
Installation Notes
Verify Fuel System Compatibility: Confirm that the FPRF8 is appropriate for the intended return-style fuel system.
Review Turbosmart Instructions: Read the manufacturer's installation and maintenance documentation.
Confirm Fuel Compatibility: Ensure all hoses, fittings, and seals are suitable for the selected fuel.
Disconnect the Battery: Follow proper electrical safety procedures.
Relieve Fuel System Pressure: Depressurize the system before disconnecting fuel lines.
Work in a Ventilated Area: Keep ignition sources away from fuel.
Select the Mounting Location: Choose an accessible position away from excessive heat.
Maintain Heat Clearance: Turbosmart recommends mounting the regulator at least 100mm from significant heat sources.
Identify Fuel Ports: Confirm the inlet, outlet, return, gauge, and pressure reference connections.
Select Correct Fittings: Use fittings compatible with the regulator's port interfaces.
Mount the Assembly: Secure the regulator and filter using an appropriate mounting arrangement.
Connect the Fuel Supply: Route the feed line to the designated inlet.
Connect the Regulated Outlet: Route the outlet according to the fuel system design.
Connect the Return Line: Ensure the return line is correctly sized and unrestricted.
Install a Pressure Gauge or Sensor: Use the 1/8-inch NPT port if required.
Connect the Manifold Reference: Use an appropriate pressure reference source.
Secure Fuel Plumbing: Protect hoses from heat, abrasion, vibration, and moving components.
Inspect the Filter Assembly: Confirm the filter cartridge is correctly installed.
Prime the Fuel System: Activate the fuel pumps according to the vehicle's service procedure.
Check for Leaks: Inspect every fitting before starting the engine.
Set Base Fuel Pressure: Adjust the regulator according to the intended fuel system requirements.
Verify Reference Operation: Confirm that fuel pressure responds correctly to manifold pressure changes.
Start the Engine: Monitor fuel pressure and inspect for leaks.
Check Pump Performance: Verify adequate fuel flow at the required operating pressure.
Confirm ECU Calibration: Ensure injector data and pressure settings are correctly configured.
Perform Controlled Testing: Monitor fuel pressure as engine load increases.
Check for Pressure Drop: Verify that fuel pressure remains stable under high-load conditions.
Service the Filter Regularly: Inspect and clean the filter element at appropriate intervals.
Reinspect All Connections: Check fittings, mounting hardware, and hoses after initial operation.
Use Professional Installation When Necessary: High-pressure fuel system modifications should be performed by qualified personnel.
Important: Do not remove or adjust the regulator's locking collar. Incorrect installation, improper pressure adjustment, or fuel leaks can cause engine damage, fire, or personal injury.
What's Included
(1) Turbosmart FPRF8 Black Fuel Pressure Regulator and Filter Assembly (TS-0404-1532)
(1) Integrated Washable 10-Micron Stainless Steel Mesh Filter Element
Note: This product includes one combined regulator/filter assembly. Fuel hoses, -8AN fittings, mounting brackets, fuel pressure gauges, sensors, and additional installation hardware are not confirmed as included and may need to be purchased separately.
Upgrade your performance fuel system with the Turbosmart FPRF8 Black Fuel Pressure Regulator with Integrated Fuel Filter (TS-0404-1532), engineered to deliver precise pressure regulation, high-flow capability, and effective filtration in one convenient assembly.
Featuring -8AN inlet, outlet, and return connections, adjustable 35–80 PSI base pressure, true 1:1 boost-referenced regulation, a stainless steel valve seat, Mil-Spec diaphragm, and washable 10-micron filter, the FPRF8 provides the performance-focused features required for demanding fuel system applications.
Whether building a turbocharged K20 or K24 Honda, upgrading an E85 fuel system, or completing a high-horsepower motorsport project, the Turbosmart TS-0404-1532 delivers the precision, durability, and advanced fuel management technology expected from Turbosmart.
| Part Number: | TS-0404-1532 |
| Brand: | Turbosmart |
| Color: | Black |
| Size: | -8AN |
WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. www.P65Warnings.ca.gov.
Vehicle Fitment
This part does not have vehicle specific fitment. Please contact us if you need assistance.
Reviews
No Reviews Yet!
Write a Review