?Fleetguard AH19496 has revolutionized air filtration design with the introduction of its patented Fleetguard OptiAir technology. To fit shrinking engine compartments, OptiAir has a reduced system size. The two-stage air housing design extends filter life and lowers restriction to deliver maximum engine performance. Higher dust holding capacity allows for longer service intervals and lower maintenance costs. Specifications: Length 7.44 inch Largest housing OD 5.42 in Dust collector NA End Connection OD 2.00 in Side Connection OD 2.00 in