{"product_id":"skf-steering-box-seal","title":"SKF Upper Steering Box Seal for Porsche 356A\/356B\/356C\/356SC (1957–1965)","description":"\u003cp\u003eThis SKF upper steering box seal is a direct-fit replacement for the Porsche applications listed in the fitment table below. SKF has been engineering bearings, seals, and wheel-end components since 1907 and remains one of the world’s leading OEM suppliers. Built to OE-style dimensions, it’s the right way to keep the original hardware running smoothly and quietly.\u003c\/p\u003e\u003ch3\u003eTechnical Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eManufacturer part number: 6431\u003c\/li\u003e\n\u003cli\u003eOE reference: 90011300350\u003c\/li\u003e\n\u003cli\u003ePosition: Upper (steering box seal)\u003c\/li\u003e\n\u003cli\u003eSeal size: 16 x 28 x 7 mm\u003c\/li\u003e\n\u003cli\u003eLate ’57 (T2) ZF steering box applications commonly note this as the upper seal—confirm on disassembly.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eUse the fitment table below to confirm year and model. If you’re unsure about fitment, send us your VIN (or gearbox number where applicable) and we’ll help you verify the correct part.\u003c\/p\u003e\u003cp\u003eWe’ve been doing Porsche brake and chassis work for over 20 years, and we treat fitment questions like they matter—because they do.\u003c\/p\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003cth align=\"left\" width=\"100\"\u003eYear\u003c\/th\u003e\n\u003cth align=\"left\" width=\"125\"\u003eMake\u003c\/th\u003e\n\u003cth align=\"left\" width=\"150\"\u003eModel\u003c\/th\u003e\n\u003cth align=\"left\" width=\"80\"\u003eSubmodel\u003c\/th\u003e\n\u003cth align=\"left\"\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1957\u003c\/td\u003e\n\u003ctd\u003ePorsche\u003c\/td\u003e\n\u003ctd\u003e356A\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1958\u003c\/td\u003e\n\u003ctd\u003ePorsche\u003c\/td\u003e\n\u003ctd\u003e356A\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1959\u003c\/td\u003e\n\u003ctd\u003ePorsche\u003c\/td\u003e\n\u003ctd\u003e356A\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1960\u003c\/td\u003e\n\u003ctd\u003ePorsche\u003c\/td\u003e\n\u003ctd\u003e356B\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1961\u003c\/td\u003e\n\u003ctd\u003ePorsche\u003c\/td\u003e\n\u003ctd\u003e356B\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1962\u003c\/td\u003e\n\u003ctd\u003ePorsche\u003c\/td\u003e\n\u003ctd\u003e356B\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1963\u003c\/td\u003e\n\u003ctd\u003ePorsche\u003c\/td\u003e\n\u003ctd\u003e356B\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1964\u003c\/td\u003e\n\u003ctd\u003ePorsche\u003c\/td\u003e\n\u003ctd\u003e356C\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1965\u003c\/td\u003e\n\u003ctd\u003ePorsche\u003c\/td\u003e\n\u003ctd\u003e356C\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1964\u003c\/td\u003e\n\u003ctd\u003ePorsche\u003c\/td\u003e\n\u003ctd\u003e356SC\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1965\u003c\/td\u003e\n\u003ctd\u003ePorsche\u003c\/td\u003e\n\u003ctd\u003e356SC\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"SSF E","offers":[{"title":"Default Title","offer_id":47079809253554,"sku":"BCNB_6431","price":4.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/D09AE525-A25D-4CCD-82AE-D30EC900EFF8-2.jpg?v=1771453191","url":"https:\/\/pmbperformance.com\/products\/skf-steering-box-seal","provider":"PMB Performance","version":"1.0","type":"link"}