Moroso Racing Oil Filter 27 Micron

The Moroso Racing Oil Filter is a high-performance spin-on racing oil filter built for severe-duty racing use. It has a 27 micron filtration rating that balances filtering efficiency with oil flow, so it works as a dependable race oil filter for performance engines.

Key Features:

• 27 micron filtration rating, set to keep oil flowing while still removing harmful particles
• Maximum initial restriction of only 2.5 psi when tested to SAE J806, which means less pressure drop, more flow and less oil bypass
• Extra-thick housing with a tuck seam for higher burst strength
• Roll-formed threads for a precise, tight fit
• Anti-drainback valve keeps oil in the filter after engine shutdown
• Buna-N gasket is compatible with racing fuels and lubricants
• 13/16"-16 UNF thread canister design

Moroso's research found that particles smaller than about 20 microns are not large enough to cause engine wear. Filters with very low micron ratings can restrict flow so much that the bypass valve opens, and then no filtration occurs. Moroso chose the 27 micron rating to avoid that problem and keep oil moving to critical engine components under demanding conditions.