There is no better way to protect your motorsport investment than a cleanable /reusable System 1 Filter. High flow inlet for maximum flow volume. Strong die cast housing, lifetime tough. Removable inspection cap permits removal and inspection anytime. Anti-aeration filter cone, made from DuPont ZYTEL. Dual oil rings, double sealing, double security. Aluminum housing ribs improve oil cooling. Fits most non-metric applications