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Product Details
The Turbosmart FPRF10 Black Fuel Pressure Regulator with Integrated Fuel Filter (TS-0404-1542) is a high-performance fuel management solution engineered to deliver precise fuel pressure regulation and efficient fuel filtration in a single compact assembly. Featuring -10AN inlet, outlet, and return connections, an adjustable 35–80 PSI base fuel pressure range, true 1:1 boost-referenced pressure regulation, and an integrated washable 10-micron stainless steel filter, the FPRF10 is designed for demanding high-horsepower fuel systems.
Developed for performance vehicles utilizing large-diameter fuel lines, the FPRF10 combines two essential fuel system components into one convenient package. By integrating a high-flow fuel filter directly into the fuel pressure regulator assembly, Turbosmart simplifies fuel system plumbing while reducing the number of separate components required for installation.
The FPRF10 is based on Turbosmart's proven fuel pressure regulator technology, utilizing a stainless steel valve seat and motorsport-grade diaphragm to deliver responsive fuel pressure control under demanding operating conditions.
Its true 1:1 manifold pressure reference ratio is particularly beneficial for turbocharged and supercharged applications. As manifold boost pressure increases, the regulator is designed to increase fuel rail pressure by a corresponding amount, helping maintain the intended pressure differential across the fuel injectors.
For example, a properly configured system operating at 43.5 PSI base fuel pressure should target approximately 53.5 PSI rail pressure at 10 PSI of manifold boost, assuming adequate pump capacity and correct installation.
This pressure response is essential for maintaining predictable injector operation and consistent fuel delivery in high-performance forced-induction engines.
The integrated 10-micron stainless steel mesh filter provides an additional layer of protection for fuel injectors and other downstream fuel system components. Its high-flow construction is designed to capture fine contaminants while minimizing unnecessary restriction.
Unlike conventional disposable filter elements, the FPRF10's stainless steel filter cartridge is washable and reusable, helping reduce long-term maintenance costs.
The FPRF10 is engineered for fuel systems supporting up to 3,000 horsepower, making it an attractive option for high-output street cars, drag racing applications, roll-racing builds, and dedicated motorsport vehicles.
Its -10AN connections are designed for large-capacity fuel systems where maintaining sufficient fuel delivery is critical.
The regulator is compatible with a broad range of fuels, including gasoline, ethanol-based fuels, methanol, race gasoline, and aggressive leaded racing fuels, subject to proper system configuration and material compatibility throughout the complete fuel system.
A dedicated 1/8-inch NPT gauge or pressure sensor port allows the installation of a compatible fuel pressure gauge or electronic pressure transducer. This provides a convenient location for monitoring and verifying fuel pressure during setup and tuning.
The FPRF10 also incorporates Turbosmart's unique locking collar design, which helps maintain the integrity of the regulator assembly.
Finished in black, the regulator/filter combination provides a clean appearance suitable for custom engine bays and motorsport fuel system installations.
For turbocharged Honda and Acura applications, including high-horsepower K20, K24, and B-Series builds, the FPRF10 offers a premium solution for builders designing a complete aftermarket return-style fuel system.
Whether upgrading an existing fuel system, simplifying a complex motorsport installation, or building an engine requiring substantial fuel delivery, the Turbosmart FPRF10 TS-0404-1542 combines accurate fuel pressure control, efficient filtration, and high-flow capability in one integrated assembly.
Features
Turbosmart FPRF10 Series: Premium fuel pressure regulator with integrated fuel filtration.
Combined Regulator and Filter Assembly: Incorporates two essential fuel system functions into one unit.
-10AN Fuel Inlet: Designed for high-flow fuel systems utilizing -10AN connections.
-10AN Fuel Outlet: Provides a compatible large-diameter fuel connection.
-10AN Fuel Return Port: Supports return-style fuel pressure regulation.
35–80 PSI Adjustable Base Pressure: Allows fuel pressure to be configured for the intended application.
True 1:1 Pressure Reference Ratio: Designed to maintain the correct fuel pressure differential under changing manifold pressure.
Up to 3,000 HP Fuel System Support: Engineered for demanding high-output applications.
Integrated 10-Micron Fuel Filter: Helps protect downstream fuel system components from fine contaminants.
Washable Stainless Steel Filter Element: Provides a serviceable alternative to disposable filter cartridges.
High-Flow Filtration Design: Minimizes unnecessary fuel restriction.
Stainless Steel Valve Seat: Provides durability and consistent pressure regulation.
Motorsport-Grade Diaphragm: Designed for responsive operation and compatibility with demanding fuels.
1/8-Inch NPT Gauge Port: Accommodates a compatible fuel pressure gauge or pressure sensor.
Unique Locking Collar Design: Provides secure regulator assembly construction.
Broad Fuel Compatibility: Suitable for gasoline, ethanol blends, methanol, race fuel, and leaded fuels.
Black Exterior Finish: Complements custom performance engine bays.
Reduced Plumbing Complexity: Eliminates the need for a separate filter housing in suitable installations.
Fewer Potential Connection Points: Can reduce the number of fittings required compared with separate components.
Return-Style Fuel System Compatibility: Designed for systems utilizing a dedicated fuel return line.
Boosted Engine Compatibility: Suitable for turbocharged and supercharged applications.
Naturally Aspirated Performance Applications: Can be used in appropriately configured high-flow fuel systems.
Serviceable Filter Cartridge: Supports periodic inspection and cleaning.
Universal Custom Fitment: Suitable for custom fuel systems with compatible plumbing and mounting arrangements.
Additional Information
- Manufacturer: Turbosmart
- Part Number: TS-0404-1542
- Product Series: FPRF10
- Product Type: Fuel Pressure Regulator with Integrated Fuel Filter
- Configuration: Adjustable Bypass / Return-Style Regulator
- Finish: Black
- Fuel Inlet: -10AN
- Fuel Outlet: -10AN
- Fuel Return: -10AN
- Adjustable Base Fuel Pressure: 35–80 PSI
- Pressure Reference Ratio: True 1:1
- Advertised Fuel System Capacity: Up to 3,000 HP
- Integrated Filter: Yes
- Filter Rating: 10 Microns
- Filter Element: Washable Stainless Steel Mesh Cartridge
- Valve Seat: Stainless Steel
- Diaphragm: Motorsport-Grade / Mil-Spec
- Gauge / Sensor Port: 1/8-Inch NPT
- Compatible Fuels: Gasoline, Ethanol-Based Fuels, Methanol, Race Fuel, and Leaded Fuels
- Fuel System Type: Return-Style
- Application: Universal / Custom Performance Fuel Systems
- UPC: 9329677034998
Integrated Fuel Pressure Regulation and Filtration
The Turbosmart FPRF10 combines an adjustable fuel pressure regulator with a high-flow fuel filter in one housing.
Traditional aftermarket fuel systems commonly use a separate fuel filter and regulator connected through additional fuel lines and fittings.
The FPRF10 integrates these functions to simplify plumbing and provide a cleaner installation.
Potential advantages include reduced component count, fewer external connections, and easier system packaging.
Proper fuel system design remains essential to ensure sufficient flow and correct pressure regulation.
True 1:1 Fuel Pressure Regulation
The FPRF10 uses a true 1:1 manifold-referenced pressure regulation system.
In a typical forced-induction fuel system, the regulator must compensate for changes in intake manifold pressure.
As boost pressure increases, the regulator raises fuel rail pressure by approximately the same amount.
For example:
43.5 PSI Base Pressure / 0 PSI Boost: Approximately 43.5 PSI fuel rail pressure.
43.5 PSI Base Pressure / 10 PSI Boost: Approximately 53.5 PSI fuel rail pressure.
43.5 PSI Base Pressure / 20 PSI Boost: Approximately 63.5 PSI fuel rail pressure.
43.5 PSI Base Pressure / 30 PSI Boost: Approximately 73.5 PSI fuel rail pressure.
These examples illustrate the intended relationship between fuel pressure and manifold pressure.
Actual pressure depends on regulator setup, pump capacity, system restrictions, and operating conditions.
The fuel pump must be capable of supplying the required volume at the resulting operating pressure.
35–80 PSI Adjustable Base Pressure
The TS-0404-1542 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 established according to the fuel injector specifications, engine management calibration, and intended operating requirements.
The regulator's adjustment range should not be confused with a maximum allowable rail pressure specification.
Boost-referenced rail pressure can exceed the base setting as manifold pressure increases.
Integrated 10-Micron Stainless Steel Fuel Filter
The FPRF10 includes an integrated 10-micron stainless steel mesh filter cartridge.
This filter is designed to capture fine contaminants before they reach sensitive downstream components.
Proper filtration helps protect fuel injectors and other precision fuel system components from debris that could affect operation.
The filter's high-flow design is intended to minimize restriction while providing effective filtration.
Washable and Reusable Filter Element
Unlike disposable paper-style filter elements, the FPRF10 uses a washable stainless steel mesh cartridge.
The element can be serviced according to Turbosmart's maintenance instructions.
Regular filter inspection and cleaning help maintain fuel flow and reduce the risk of restriction caused by accumulated contamination.
Turbosmart recommends servicing the filter at appropriate fuel filter maintenance intervals.
Up to 3,000 Horsepower Support
Turbosmart advertises the FPRF10 for fuel systems supporting up to 3,000 horsepower.
This rating reflects the regulator's intended high-flow capability.
It does not mean the regulator alone can supply enough fuel for a 3,000-horsepower engine.
Actual horsepower support depends on the fuel pumps, fuel type, injector capacity, line sizing, electrical supply, operating pressure, and complete system design.
Ethanol and methanol applications typically require different fuel volumes than gasoline applications at comparable power levels.
-10AN Fuel Connections
The FPRF10 features -10AN inlet, outlet, and return connections.
These large-diameter connections are intended for high-flow fuel systems.
Correct fittings must be selected according to the regulator's actual port interface and the fuel hose or hard-line configuration.
Do not assume that every fitting marketed as -10AN uses the same sealing method.
Verify the required adapter and sealing arrangement before installation.
Broad Fuel Compatibility
The FPRF10 is designed for a wide range of automotive fuels.
Turbosmart identifies compatibility with gasoline, ethanol-based fuels, methanol, racing fuels, and aggressive leaded fuel blends.
The stainless steel valve seat and motorsport-grade diaphragm contribute to the regulator's broad fuel compatibility.
All other fuel system components must also be compatible with the selected fuel.
Stainless Steel Valve Seat
The regulator incorporates a stainless steel valve seat.
This component is important for accurate fuel pressure control and long-term durability.
The valve seat works with the regulator's internal pressure-control mechanism to manage fuel returning to the tank.
Consistent valve operation helps maintain predictable fuel pressure across changing operating conditions.
Motorsport-Grade Diaphragm
The FPRF10 utilizes a motorsport-grade diaphragm designed for demanding fuel system applications.
The diaphragm responds to pressure changes and works with the regulator's internal spring and valve mechanism.
This design supports accurate manifold-referenced pressure regulation.
A properly functioning diaphragm is essential for consistent fuel pressure behavior.
1/8-Inch NPT Gauge and Sensor Port
The TS-0404-1542 includes a 1/8-inch NPT port for a compatible fuel pressure gauge or sensor.
This port allows fuel pressure to be monitored during initial setup, tuning, and ongoing operation.
An electronic fuel pressure sensor can also be useful for ECU data logging and engine protection strategies.
Use fittings and thread sealants approved for the selected fuel and pressure conditions.
Return-Style Fuel System Requirements
The FPRF10 is designed for return-style fuel systems.
In this configuration, the regulator controls pressure by allowing excess fuel to return to the tank.
A properly designed system generally includes compatible fuel pumps, feed lines, fuel rails, regulator plumbing, return lines, and appropriate electrical controls.
Vehicles originally equipped with returnless fuel systems may require additional modifications.
Fuel System Tuning Considerations
Changing fuel pressure can affect injector flow characteristics and engine fueling.
For this reason, installation should be coordinated with the engine management calibration.
When upgrading to a larger fuel system, verify injector data, base pressure, boost reference plumbing, and fuel pump performance.
Professional tuning is strongly recommended for high-output forced-induction applications.
FPRF6 vs. FPRF8 vs. FPRF10
Turbosmart offers the integrated regulator and filter assembly in multiple sizes.
FPRF6 – TS-0404-1522: Designed for compatible -6AN fuel systems.
FPRF8 – TS-0404-1532: Designed for compatible -8AN fuel systems.
FPRF10 – TS-0404-1542: Designed for compatible -10AN fuel systems and advertised for systems supporting up to 3,000 horsepower.
The correct model should be selected according to the complete fuel system's flow requirements and plumbing configuration.
Common Reasons for Replacement
Inadequate Factory Fuel Pressure Regulation: Upgrades a fuel system requiring greater flow capacity.
High-Horsepower Engine Builds: Supports large-capacity performance fuel systems.
Turbocharger Upgrades: Provides boost-referenced pressure regulation for suitable forced-induction applications.
Supercharger Installations: Supports compatible return-style fuel systems.
Fuel System Plumbing Simplification: Combines the regulator and filter into one assembly.
Separate Regulator and Filter Replacement: Reduces the need for multiple standalone components.
Fuel Pressure Instability: Provides an upgraded regulator when existing hardware is insufficient or damaged.
Ethanol Fuel System Upgrades: Suitable for properly designed ethanol-compatible fuel systems.
Motorsport Fuel System Construction: Provides a high-flow regulator and filter for competition applications.
Damaged Existing Regulator: Replaces a worn or malfunctioning pressure-control component.
Fuel Filter Maintenance Upgrades: Provides a serviceable stainless steel filter element.
Custom K-Series Turbo Builds: Supports large-capacity fuel systems for high-output Honda and Acura applications.
Installation Notes
Verify Fuel System Compatibility: Confirm that the FPRF10 is appropriate for the intended return-style fuel system.
Review Turbosmart Instructions: Read the complete installation and maintenance documentation.
Confirm Fuel Requirements: Ensure the regulator, hoses, fittings, and seals are compatible with the selected fuel.
Disconnect the Battery: Follow appropriate electrical safety procedures.
Relieve Fuel System Pressure: Depressurize the system before disconnecting any fuel components.
Work in a Ventilated Area: Keep flames, sparks, and ignition sources away from fuel.
Plan the Mounting Location: Select an accessible location away from excessive heat.
Maintain Heat Clearance: Follow Turbosmart's minimum separation requirements from significant heat sources.
Confirm Port Identification: Identify the inlet, outlet, return, gauge, and reference connections.
Select Correct Fittings: Use fittings designed for the regulator's port interfaces.
Install the Regulator Assembly: Secure the unit using an appropriate mounting arrangement.
Connect the Fuel Feed: Route the supply line to the designated inlet.
Connect the Fuel Outlet: Route the regulated fuel supply according to the intended system configuration.
Connect the Return Line: Ensure the return path is correctly sized and unrestricted.
Install a Fuel Pressure Gauge or Sensor: Use the 1/8-inch NPT port if required.
Connect the Manifold Reference: Use a suitable reference source for boost-referenced pressure control.
Secure All Fuel Lines: Protect hoses from abrasion, vibration, heat, and moving components.
Inspect the Filter Assembly: Confirm that the integrated filter is correctly installed.
Prime the Fuel System: Activate the fuel pumps according to the vehicle's service procedure.
Check for Fuel Leaks: Inspect every fitting and connection before starting the engine.
Set Base Fuel Pressure: Adjust the regulator according to Turbosmart's instructions and the engine's 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 Fuel Pump Performance: Confirm adequate fuel delivery at the intended operating pressure.
Verify ECU Calibration: Ensure injector data and fuel pressure settings are correctly configured.
Perform Controlled Testing: Monitor fuel pressure under increasing engine load.
Inspect for Pressure Drop: Confirm that the fuel system maintains the required pressure during high-load operation.
Service the Filter Regularly: Clean or replace the filter element at the appropriate maintenance intervals.
Reinspect 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: Turbosmart specifically warns against removing or adjusting the regulator's locking collar. Incorrect installation, fuel leaks, or improper pressure settings can cause engine damage, fire, or personal injury.
What's Included
(1) Turbosmart FPRF10 Black Fuel Pressure Regulator and Filter Assembly (TS-0404-1542)
(1) Integrated Washable 10-Micron Stainless Steel Mesh Filter Element
Note: This listing is for one combined regulator/filter assembly. Fuel hoses, -10AN adapters, mounting hardware, fuel pressure gauges, electronic sensors, and additional installation components should be purchased separately unless specifically confirmed as included in the manufacturer's package.
Take control of your high-performance fuel system with the Turbosmart FPRF10 Black Fuel Pressure Regulator and Integrated Fuel Filter (TS-0404-1542), engineered to deliver precise pressure regulation, high-flow fuel delivery, and effective filtration in one compact assembly.
Featuring -10AN inlet, outlet, and return connections, adjustable 35–80 PSI base pressure, true 1:1 boost-referenced regulation, a stainless steel valve seat, motorsport-grade diaphragm, and a washable 10-micron filter, the FPRF10 provides the performance-focused features required for demanding fuel system applications.
Whether building a high-horsepower turbocharged K-Series Honda, upgrading a dedicated drag racing vehicle, or simplifying a custom motorsport fuel system, the Turbosmart TS-0404-1542 delivers the precision, durability, and advanced fuel management technology expected from Turbosmart.
| Part Number: | TS-0404-1542 |
| Brand: | Turbosmart |
| Color: | Black |
| Size: | -10AN |
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.
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