Moroso 85653 Air/Oil Separator Catch Can Small Body Black Anodized PCV Valve Oil Trap

The Moroso 85653 is a small-body, black anodized Air/Oil Separator and Catch Can designed to be plumbed directly into a vehicle's PCV (Positive Crankcase Ventilation) system. Unlike a basic catch can, this unit captures excess crankcase vapors, residual oil mist, and moisture before they can re-enter the intake tract — protecting valves, pistons, and intercooler components from oil deposits and contamination.

Key Features:

• Billet aluminum body with internal baffling and mesh media for effective oil/vapor separation
• Black anodized finish for a clean, durable appearance
• Small body dimensions: 2.125 in. diameter × 4.5 in. tall
• 1/2 in. NPT female inlet and outlet fittings for secure, leak-free connections
• Two-piece body unscrews for easy draining and maintenance without tools
• Keeps the PCV system fully functional and emissions-compliant — does not vent to atmosphere
• Reduces detonation and intake deposits by eliminating oil mist from the intake air charge
• Compatible with both automatic and standard transmissions

Kit Includes:

• 1× Tank body
• 2× Billet clamps
• 1× Billet mount
• 2× Stainless steel brackets
• 1× Stainless steel radiator bracket (large) and 1× (small)
• 2× 90-degree barbed fittings
• 1× Length of 3/8 in. × 2 ft. hose
• 1× Length of 3/8 in. × 5 ft. hose
• 6× 1/4-20 SHCS × 5/8 hardware
• 2× Hose clamps

Collected oil drains easily by unscrewing the base of the small-body separator. Moroso recommends draining approximately every 1,000 miles or at each track day. The unit is proudly made in the USA by Moroso Performance Products.