{"product_id":"national-5273-engine-crankshaft-seal-rear","title":"National 5273 Engine Crankshaft Seal - Rear","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eNational 5273 is a rear engine crankshaft seal built for applications that require PTFE sealing material and precise dimensional matching. It is listed for a wide range of GM, Saturn, Isuzu, and Jeep applications, including Chevrolet Impala, Chevrolet Malibu, and Pontiac Grand Prix fitments.\u003c\/p\u003e\u003cp\u003eThis seal uses PTFE construction with a 2.991-inch shaft diameter, 3.637-inch outside diameter, and 0.385-inch width. The design supports rear crankshaft sealing where stable dimensions and low-friction sealing material matter.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePTFE sealing material for modern engine sealing applications\u003c\/li\u003e\n\u003cli\u003eRear crankshaft seal configuration\u003c\/li\u003e\n\u003cli\u003e2.991-inch inside diameter for shaft fitment\u003c\/li\u003e\n\u003cli\u003e3.637-inch outside diameter and 0.385-inch width\u003c\/li\u003e\n\u003cli\u003eNational part number 5273 for catalog matching\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eNational 5273 is an engine crankshaft seal intended for rear sealing applications across many domestic platforms. The fitment data includes Chevrolet Impala, Chevrolet Malibu, Pontiac Grand Prix, Buick Century, and other vehicles with rear crankshaft seal requirements. The seal’s PTFE material and listed dimensions help support accurate replacement selection when matching the shaft diameter, housing diameter, and seal width.\u003c\/p\u003e\u003cp\u003eThis part cross-references SKF 29862 and 10065600 for the same application. National 5273 is a direct catalog reference for buyers searching by part number or by fitment on GM, Saturn, Isuzu, and Jeep vehicles.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOil leakage at the rear crankshaft sealing area\u003c\/li\u003e\n\u003cli\u003eSeal wear from age and heat cycling\u003c\/li\u003e\n\u003cli\u003eIncorrect seal sizing during engine service\u003c\/li\u003e\n\u003cli\u003eReplacement needs on high-mileage engines\u003c\/li\u003e\n\u003cli\u003eSealing issues after crankshaft or engine repair work\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify the shaft diameter, outside diameter, and width against the original seal before installation. Confirm rear position fitment and review the application notes for 2nd design or dimension-specific listings where shown. Clean the sealing surface thoroughly and inspect the crankshaft surface for wear or scoring before installing the new seal.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNational has supplied sealing products for more than 75 years and continues to develop sealing solutions for current vehicle applications. Part number 5273 reflects that sealing-focused product heritage and cataloged dimensional accuracy.\u003c\/p\u003e","brand":"National","offers":[{"title":"Default Title","offer_id":53506990145717,"sku":"BCZK-5273","price":39.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NS_5273_Ang.jpg?v=1791788499","url":"https:\/\/www.partcatalog.com\/products\/national-5273-engine-crankshaft-seal-rear","provider":"PartCatalog","version":"1.0","type":"link"}