Standard Efficiency Engine Air - Secondary It pays to choose genuine Cat Filters to protect the iron that generates your income. Cat Secondary Engine Air Filters are your last line of defense against dust, dirt and other contaminants that may damage the components of your income-producing machinery. Tasked with protecting the engine while the primary filter is being changed or in the event of a breach in the main filter, this secondary unit plays a critical role in preventing damage due to contaminants. Constructed of durable materials and manufactured to meet Caterpillar’s stringent specifications, these air filters deliver the consistent quality and reliability that Cat owners count on. Because uptime and cost-effective maintenance are critical, Cat Air Filters have been specifically designed to protect and optimize the power of your Cat iron. Working together, genuine Cat Primary and Secondary Filter Elements provide a cost-effective method for maintaining your engine’s integrity and increasing your equipment’s uptime on the jobsite. Attributes: Environmentally friendly Increased airflow with less restriction Serves the critical role of back-up filtration SPECIFICATIONS Efficiency Rating: Standard Efficiency Primary vs Secondary: Secondary Seal Type: Axial Seal COMPATIBLE MODELS Generator SR4 Engine - Generator Set 3512B 3508 G3516 3516B G3508 3512 3516 3508B 3512C G3512 3508C Petroleum Products 3512C C27 CX31-C18I CX35-P800 CX38-P800 3512B TH48-E80 TH48-E70 3512 CX48-P2300 3508B TH48 C32 3516C CX35-C18I CX38-P892 3508C CX31-P600 C18 3516 Engine - Industrial 3412 G3516 3512 3516 3512B 3508 3508C G3512 C32 C18 3512C G3408 3508B C27 G3508 3516B 3412E CG137-12 G3412 SR4 Marine Products 3412 3508B 3512B 3516 3508 3516B 3512C 3512 Load, Haul, Dump R1300 R1300G R1300G II