Purolator’s 2011 catalog for heavy duty applications (No. PUCT211) significantly expands and updates its coverage of filtration products for commercial over-the-road (OTR) vehicles, as well as agricultural and mobile off-highway equipment. Presented in an easy-to-use format, this 688-page catalog covers filters for gasoline and diesel-powered vehicles as well as those for construction and farm equipment. The kinds of filters offered through the catalog include spin-on and cartridge type oil filters, engine air and cabin air filters, primary and secondary fuel filters, fuel/water sparators, transmission filters, winch filters, power-steering filters and more.