Royal Purple 20-561 Extended Life Synthetic Oil Filter 3 Inch Spin-On

The Royal Purple 20-561 Extended Life Oil Filter is a super-premium 3" spin-on filter engineered to deliver maximum engine protection through superior particle removal and optimized oil flow. Featuring 100% synthetic micro-glass media, this filter achieves 99% filtration efficiency at particles as small as 25 microns, significantly outperforming conventional cellulose-based oil filters.

Advanced Filtration Technology:

• 100% screen-backed synthetic micro-glass media for superior particle capture
• 99% filtration efficiency at 25 microns
• Optimized flow design minimizes restriction while maximizing protection
• Extended service life for longer intervals between changes

Heavy-Duty Construction Features:

• Reinforced Shell: Thicker gauge steel construction provides extra strength and puncture resistance against road debris
• Metal End-Caps: Ensure positive seal for secure filter element assembly
• Heavy-Gauge Steel Backplate: Delivers higher burst strength for extreme conditions
• Reinforced Center Tube: Prevents filter element collapse under high pressure

Premium Components:

• Silicone Anti-Drain Back Valve: Prevents dry starts by retaining oil in the filter during shutdown; outperforms standard nitrile rubber in extreme temperatures
• Engineered By-Pass Valve: Ensures continuous oil flow even under excessive restriction conditions
• Premium Nitrile Gasket: Features special lubricity compound to reduce installation and removal torque

Built to match the performance of Royal Purple synthetic motor oils, this filter combines advanced synthetic media technology with robust construction to deliver maximum engine protection and extended filter life in the toughest operating conditions.