Most racers focus on micron ratings without understanding the tradeoff: filters with extremely low micron ratings create excessive pressure drop across the element, which can force the bypass valve open and leave the engine running with zero filtration. Moroso's racing oil filter takes a different approach, rated at 27 microns to deliver a maximum initial restriction of only 2.5 psi when tested to SAE J806, keeping the bypass valve closed and filtration active under the most severe operating conditions.
The bypass valve stays closed when it matters most. Research by filtration technology experts confirms that particles smaller than 20 microns do not produce measurable engine wear. By targeting 27 microns, Moroso keeps restriction low enough that the bypass valve never needs to open, meaning every drop of oil passes through the filter element rather than bypassing it entirely during hard acceleration or high-RPM operation.
Available in two configurations for different applications. The 22mm x 1.5 thread version uses a short 3-1/2 inch housing, ideal for tight engine bays. The 3/4 inch-16 UNF thread version runs a longer 5-1/4 inch housing with 170 square inches of filter area, suited for builds where maximum element surface is the priority. Both versions are rated to a burst strength of 300 psi, handling the elevated oil pressures common in high-output race engines.
Product Benefits
- 27-Micron Rating: Filters harmful particles while keeping initial restriction to a maximum of 2.5 psi per SAE J806 testing.
- 300 psi Burst Strength: Withstands the elevated oil pressures produced by high-output 4.6L and 5.4L race engines.
- 170 sq. in. Filter Area (3/4-in. version): Large element surface supports high flow without sacrificing filtration efficiency.
- Bypass Valve Stays Closed: Low restriction ensures the bypass valve remains shut, so oil is always filtered.
- Two Thread Options: Choose 22mm x 1.5 short design or 3/4 inch-16 UNF long design to match your specific engine configuration.
- Purpose-Built for Racing: Engineered to maintain full filtration performance under the severe operating conditions of motorsport use.
Note: Fits Ford 4.6L and 5.4L engines. Two thread configurations available: 22mm x 1.5 short design (3-1/2 inches high) and 3/4 inch-16 UNF long design (5-1/4 inches high). Select the correct thread size for your application before ordering.
About Moroso: Moroso Performance Products has spent decades engineering racing oil systems, dry sump components, valve covers, and related hardware for serious motorsport applications. The brand's filtration products are developed from hands-on experience with high-performance engines and validated against recognized industry testing standards.
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Product Specifications & Vehicle Fitment
Review the product details and confirm compatibility with your vehicle before ordering.
| Specification | Details |
|---|---|
| Vehicle Trim | GT, GT500 |
