Radium Engineering 18-0046 FPR Spring – Wide Range for MPR, DMR, and FST-R

improves linear pressure adjustment from 60psi to 80psi

The Radium Engineering 18-0046 FPR Spring is a wide-range fuel pressure regulator spring designed for use with Radium MPR, DMR, and FST-R fuel system components. It improves linear fuel pressure adjustment across a range from 60 to 80 psi, helping provide greater tuning flexibility for performance-oriented fuel systems.

Designed as a direct-use replacement or upgrade component for compatible Radium Engineering regulators, this spring supports accurate fuel pressure setup and consistent regulator operation. Its application-specific design makes it a practical choice when adjusting fuel delivery to match injector sizing, engine modifications, or other fuel system requirements.

Key Product Specifications & Technical Data

• Brand: Radium Engineering
• Part Number: 18-0046
• Product Type: Fuel pressure regulator spring
• Adjustment Range: 60 to 80 psi
• Application: Radium MPR, DMR, and FST-R systems
• Intended Use: Automotive fuel system tuning
• Quantity: One spring
• Regulatory Status: Not CARB approved; acknowledgement required where applicable

What's Included

One Radium Engineering 18-0046 wide-range FPR spring.

Fitment

This spring is designed for use with Radium Engineering MPR, DMR, and FST-R fuel pressure regulator systems. Confirm compatibility with the specific regulator configuration before installation.

Features:

• Wide-range pressure adjustment: Improves linear fuel pressure adjustment from 60 to 80 psi for greater tuning flexibility.
• Compatible Radium Engineering applications: Designed for use with MPR, DMR, and FST-R fuel pressure regulator systems.
• Fuel system tuning support: Helps match fuel pressure settings to injector, engine, and fuel system requirements.
• Application-specific replacement component: Provides a purpose-built spring for compatible Radium Engineering regulator assemblies.

Air Freight Prohibited: false
Not Carb Approved: true
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Unknown
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1