{"product_id":"gm-genuine-parts-differential-pinion-gear-seal-26064028-oem-replacement-leak-resistant","title":"GM GENUINE PARTS Differential Pinion Gear Seal 26064028 — OEM replacement, leak-resistant","description":"\u003cstrong\u003eGM Genuine Parts 26064028 Differential drive pinion gear seal is an OEM-quality replacement designed to prevent differential fluid leaks at the pinion gear area.\u003c\/strong\u003e\n\n\u003cp\u003eWhen a pinion seal wears or fails it can let gear oil escape, leading to messy leaks and potential drivetrain damage. The GM Genuine Parts 26064028 pinion gear seal is engineered and validated by GM to match the original equipment specifications for compatible Chevrolet, Buick, GMC and Cadillac differentials. It’s intended to restore the proper sealing surface between the drive pinion and the differential housing so fluid stays where it belongs.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this pinion gear seal stop differential leaks?\u003c\/h3\u003e\n\u003cp\u003eThe seal provides a tight barrier around the rotating pinion shaft to keep gear lubricant inside the differential while excluding dirt and moisture. Its lip geometry and sealing materials are selected to maintain contact under typical axle loads and rotational speeds without compromising service life.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePrecisely matched dimensions to original equipment fitment for reliable sealing.\u003c\/li\u003e\n  \u003cli\u003eDurable elastomer lip resists extrusion and wear from shaft rotation.\u003c\/li\u003e\n  \u003cli\u003eConstructed to exclude contaminants that accelerate leakage and bearing wear.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat vehicles and situations is part 26064028 appropriate for?\u003c\/h3\u003e\n\u003cp\u003ePart number 26064028 is a GM Genuine Parts item intended as a direct replacement in GM differentials that specify this OEM number. It’s suitable whenever the original pinion seal is worn, leaking, or replaced during differential or pinion service.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect OE replacement for GM applications that list 26064028.\u003c\/li\u003e\n  \u003cli\u003eRecommended during differential rebuilds, pinion bearing replacement, or when leaks are observed.\u003c\/li\u003e\n  \u003cli\u003eUseful for both preventive maintenance and repair after seal failure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I install or inspect the GM pinion gear seal correctly?\u003c\/h3\u003e\n\u003cp\u003eInstallation requires removing the pinion yoke and old seal, checking mating surfaces and bearings, then pressing the new seal squarely into the bore to the proper depth. Inspect the pinion shaft for grooves or damage and replace any worn bearings to ensure the new seal performs as designed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePress-in installation; avoid hammering the sealing lip or distorting the bore.\u003c\/li\u003e\n  \u003cli\u003eCheck pinion shaft finish and bearing preload before sealing.\u003c\/li\u003e\n  \u003cli\u003eUse correct GM torque specs and alignment procedures for reassembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and quality controls does GM use for this seal?\u003c\/h3\u003e\n\u003cp\u003eGM Genuine Parts are engineered and tested to match or exceed the standards used in vehicle production. The 26064028 seal uses materials and dimensions approved by GM engineers and is produced under controlled manufacturing processes to ensure consistent performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eManufactured to GM dimensional and material specifications for repeatability.\u003c\/li\u003e\n  \u003cli\u003eTested to resist common degradation from heat, oil, and shaft movement.\u003c\/li\u003e\n  \u003cli\u003eBacked by GM’s validation and traceability for service parts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The GM Genuine Parts 26064028 pinion gear seal is for owners, technicians, and fleet managers who need an OEM-fit replacement to stop differential leaks and restore factory sealing performance. It suits anyone servicing compatible Chevrolet, Buick, GMC or Cadillac rear or front differentials where this OEM part number is specified, including professional shops performing differential rebuilds and do-it-yourselfers replacing a worn pinion seal.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I reuse the old pinion seal when servicing the differential?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. Reusing an old pinion seal risks leaks. Always install a new OEM-quality seal like GM 26064028 during pinion or differential service.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this seal fit any GM vehicle differential?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Only if the vehicle’s parts catalog or service manual lists part number 26064028. Verify fitment by VIN or OEM reference before purchasing.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GM GENUINE PARTS","offers":[{"title":"Default Title","offer_id":48086101196958,"sku":"B0716SKXK3","price":48.47,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/gm-genuine-parts-pinion-seal-front-view.jpg?v=1785884679","url":"https:\/\/northtrailauto.ca\/products\/gm-genuine-parts-differential-pinion-gear-seal-26064028-oem-replacement-leak-resistant","provider":"North Trail Auto","version":"1.0","type":"link"}