Efficiency Rating: Standard Efficiency
Seal Type: Radial Seal
Primary vs Secondary: Primary
165-1689: Engine Air Filter
http://txaparts.com/shop/1651689-165-1689-engine-air-filter-5032
http://txaparts.com/web/image/product.template/5032/image_1920?unique=6e91650
Description: FILTER ELEMENT-AIR | Caterpillar® Application: 225D, 235, 235C, 3304, 3306, 3306B, 613C, 613C II, 621, 623, 627, 627B, 637D, 641, 641B, 650B, 651, 657, 657B, 666, 768B, 769, 772, 773, 824B, 966C, 977K, 977L, 988, 992, D250D
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Shipping: 2-3 Business Days