Radium Fuel Filter Kit - Ford Focus RS LZ (2016-2017)

Suits:

• 2016-2017 Ford Focus RS — LZ (2.3L EcoBoost)

Note: Not compatible with the Ford Focus ST.

The Radium Engineering Fuel Filter Kit is a direct replacement for the OEM fuel filter on the Ford Focus RS LZ, plumbed between the electric and mechanical fuel pump. The Radium filter is less restrictive than the OEM Ford unit, reducing pre-filter pressure by 3-5.5 PSI — resulting in lower current draw, reduced fuel temperature, and increased fuel flow. Installation requires only a couple of wrenches with no cutting or drilling required.

Flow improvement data:

• With 1 aftermarket pump: approximately 2% flow increase
• With 2 aftermarket pumps: approximately 4.5% flow increase

Filter Selection Guide

20-0332-03 — Stainless Steel Element

• Reusable and cleanable 10 micron stainless steel mesh element
• Ideal for: E85, methanol, and applications requiring a serviceable element

20-0332-05 — Microglass Element

• 6 micron microglass element with 99.9% capture efficiency
• Ideal for: Maximum filtration efficiency and injector protection

Kit Includes

• Billet aluminium fuel filter (element per variant selection)
• Billet aluminium 2-piece clamp
• Billet aluminium SAE male fittings
• Aluminium mounting bracket
• Stainless steel hardware

Available Part Numbers

• 20-0332-03 — Radium Fuel Filter Kit, Ford Focus RS LZ (Stainless Element)
• 20-0332-05 — Radium Fuel Filter Kit, Ford Focus RS LZ (Microglass Element)

Why Radium Engineering?

• ✅ Manufactured in the USA to motorsport-grade tolerances
• ✅ CNC-machined billet aluminium components built for performance and longevity
• ✅ Trusted by high-power build tuners and race teams worldwide
• ✅ Bolt-on fitment — no cutting, drilling, or fabrication required
• ✅ Compatible with E85, pump petrol, methanol, and flex fuel sensor integration