Radium 20-0932-03 BMW E46 M3 Fuel Filter & FPR Kit Stainless 2001-06

Vehicle Fitment

• 2001-2006 BMW E46 M3 (3.2L S54 I6 - all variants: Coupe, Convertible, CSL)

Fitment Notes

• Replaces the OEM combined fuel filter and fuel pressure regulator assembly located on the underside of the E46 M3 - direct bolt-on replacement using factory fuel line connections
• Stainless steel 10-micron filter element (suffix -03) - cleanable and reusable; for the microglass filter version (better filtration efficiency, single-use), see 20-0932-05
• No cutting, drilling, or permanent modifications required - accepts the original factory fuel lines
• E85 compatible - all materials and seals are suitable for alcohol-based fuels
• Ideal for tuned E46 M3 builds with upgraded fuel pumps or flex fuel conversions where the OEM regulator's fixed pressure setting and restrictive filter are insufficient

Features

• High-flow serviceable Radium in-line fuel filter - significantly less restrictive than the OEM filter; stainless steel element can be removed, cleaned, and reinstalled rather than replacing the entire filter
• Adjustable Radium fuel pressure regulator replaces OEM fixed-pressure unit - allows precise fuel pressure tuning for naturally aspirated, boosted, and E85 fuel system builds
• Liquid-filled fuel pressure gauge included - allows accurate real-time fuel pressure monitoring and regulator setting
• E85-compatible materials throughout - all seals, fittings, and filter media are resistant to ethanol and alcohol fuel blends
• All fittings and hardware included - complete kit, no additional parts required for installation
• Billet aluminum construction with anodized finish for corrosion resistance and clean appearance

Specifications

• Part Number: 20-0932-03
• Vehicle: 2001-2006 BMW E46 M3 (S54)
• Filter Type: Stainless steel 10-micron - cleanable & reusable
• Regulator Type: Adjustable Radium FPR
• Gauge: Liquid-filled fuel pressure gauge (included)
• Fuel Compatibility: Gasoline, E85, methanol, alcohol blends
• Installation: Direct bolt-on - no cutting or drilling; accepts factory fuel lines
• Warranty: 1 Year Limited

Included Components

• 1x Radium High-Flow In-Line Fuel Filter (stainless steel 10-micron element, serviceable)
• 1x Radium Adjustable Fuel Pressure Regulator
• 1x Liquid-Filled Fuel Pressure Gauge
• All AN Fittings and Mounting Hardware

Product Description

The Radium Engineering 20-0932-03 is a complete fuel filter and adjustable fuel pressure regulator kit for the 2001-2006 BMW E46 M3. It replaces the OEM combined fuel filter/regulator assembly on the underside of the vehicle with a high-flow serviceable Radium filter (cleanable stainless steel 10-micron element) and an adjustable Radium fuel pressure regulator - a critical upgrade for tuned S54 builds running higher-capacity fuel pumps or E85. The kit includes a liquid-filled fuel pressure gauge for precise setting, bolts directly onto the factory fuel line connections without cutting or modification, and is fully E85 compatible.

Stainless filter (suffix -03) is cleanable and reusable. For microglass filtration (non-reusable), see 20-0932-05. Installation instructions available at radiumauto.com.