{"product_id":"bosch-72271ws-engine-oil-filter","title":"Bosch 72271WS Engine Oil Filter","description":"\u003ch2\u003eWorkshop Oil Filter Overview\u003c\/h2\u003e\u003cp\u003eBosch Workshop Oil Filter 72271WS is a spin-on engine oil filter built for Subaru applications that call for M20 x 1.5 threads. It combines cellulose paper media, an anti-drain back valve, and a bypass relief valve to support clean oil flow and engine protection.\u003c\/p\u003e\u003cp\u003eCompatible With Subaru Impreza, Forester, Legacy, Outback, Crosstrek, Ascent, WRX, WRX STI, XV Crosstrek, and Baja applications across the listed model years, this filter is a direct service part for routine maintenance. The Bosch 72271WS is also identified by part number 72271WS for easy cross-checking during ordering.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSpin-on oil filter design for straightforward service replacement.\u003c\/li\u003e\n\u003cli\u003eCellulose paper filter media for contaminant capture.\u003c\/li\u003e\n\u003cli\u003eAnti-drain back valve helps retain oil in the filter after shutdown.\u003c\/li\u003e\n\u003cli\u003eBypass relief valve supports oil flow when restriction increases.\u003c\/li\u003e\n\u003cli\u003eNitrile gasket material and M20 x 1.5 thread size.\u003c\/li\u003e\n\u003cli\u003e30-micron filtration rating with a compact 2.58-inch height.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eBosch Workshop Oil Filters are engineered to remove a high percentage of pollutants before they circulate through the engine, helping reduce wear over time. This filter uses a spin-on\/canister format with cellulose media, a nitrile gasket, and built-in valves that support consistent oil delivery during cold starts and service intervals. For Subaru Impreza, Forester, Legacy, and Outback maintenance, 72271WS provides a fitment-focused replacement option with the thread size and sealing profile needed for the listed applications. The Bosch 72271WS part number is useful when matching service parts across catalogs.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOil contamination from normal engine operation.\u003c\/li\u003e\n\u003cli\u003eOil drain-back after the engine is shut off.\u003c\/li\u003e\n\u003cli\u003eRestricted flow during higher filtration load.\u003c\/li\u003e\n\u003cli\u003eRoutine filter replacement during scheduled maintenance.\u003c\/li\u003e\n\u003cli\u003eFitment matching for Subaru service applications.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the thread size, gasket sealing surface, and filter height before installation. Confirm the vehicle application against the listed Subaru fitment, including notes such as color code blue or production-date-specific coverage where shown. Replace the filter during standard oil service and follow the vehicle manufacturer’s torque and oil-fill procedures.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eBosch Workshop Oil Filters are built with filtration efficiency and dirt-holding capacity in mind, and this design is intended to support engine protection during regular service. Part number 72271WS is a Bosch service filter for the listed Subaru applications.\u003c\/p\u003e","brand":"Bosch","offers":[{"title":"Default Title","offer_id":53417967354037,"sku":"BBHK-72271WS","price":16.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/BS_72271WS_Fro.jpg?v=1791005324","url":"https:\/\/www.partcatalog.com\/products\/bosch-72271ws-engine-oil-filter","provider":"PartCatalog","version":"1.0","type":"link"}