{"product_id":"danti-rear-main-crankshaft-seal-wear-sleeve-installer-st-224c-for-cummins-paccar-carbon-steel-heavy-duty","title":"Danti Rear Main Crankshaft Seal \u0026 Wear Sleeve Installer ST-224C for Cummins\/Paccar — Carbon Steel, Heavy‑Duty","description":"\u003cp\u003e\u003cstrong\u003eThe Danti ST-224C rear main crankshaft seal and wear sleeve installer is a heavy-duty tool engineered to install and remove rear crankshaft seals and sleeves for Cummins 3.9L–9.0L and Paccar PX-6\/PX-8 engines with minimal risk to the crankshaft surface.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen replacing a rear main seal or wear sleeve on large diesel engines, using the right installer prevents seal damage and saves hours of labor. The ST-224C (alternative part references: 5395259, 3824078, 2063800090) is crafted from corrosion-resistant carbon steel and shaped to fit common seal sizes and housings used on Cummins B-Series, ISB\/ISL\/ISC, QSB, and Paccar powerplants. It’s a purpose-built tool meant to speed the job while protecting mating surfaces.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this tool reduce risk when removing a rear crankshaft seal?\u003c\/h3\u003e\n\u003cp\u003eRemoving a rear main seal with improvised tools can nick the crankshaft or housing, leading to oil leaks and costly repairs. The ST-224C centers on the shaft and provides even pressure during removal to avoid gouges or uneven wear on the seal surface.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePrecision-fit geometry that aligns with common Cummins and Paccar housings.\u003c\/li\u003e\n  \u003cli\u003eUniform force distribution lowers chance of seal lip distortion.\u003c\/li\u003e\n  \u003cli\u003eCarbon steel construction resists bending under load.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat engine models and seal numbers is it compatible with?\u003c\/h3\u003e\n\u003cp\u003eThis installer supports a broad range of diesel applications. It’s suitable for Paccar PX-6 and PX-8 applications and for many Cummins models including 4BT 3.9L, B-Series 5.9L, ISB\/ISL 5.9L–6.7L, QSB 5.9L–6.7L, ISC 8.3L, and ISL9 9.0L.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWorks on seals referenced as 5259499, 3926126, and MAHLE 67857.\u003c\/li\u003e\n  \u003cli\u003eEquivalent to OE numbers 3824078, 3163734, 3163628, 2063800090, 3163741.\u003c\/li\u003e\n  \u003cli\u003eDesigned to match common rear seal and sleeve dimensions on listed engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the build quality and materials used?\u003c\/h3\u003e\n\u003cp\u003eThe tool is manufactured from high-grade carbon steel, chosen for strength and resistance to corrosion and impact. That heavy-duty construction ensures the installer remains square and reliable during repeated professional use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCarbon steel body for long service life and toughness.\u003c\/li\u003e\n  \u003cli\u003eSurface finish to resist rust in shop environments.\u003c\/li\u003e\n  \u003cli\u003eEngineered tolerances to avoid deformation under torque.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this installer speed up a seal replacement job?\u003c\/h3\u003e\n\u003cp\u003eBy combining correct fitment with sturdy construction, the ST-224C streamlines removal and installation steps. Technicians spend less time improvising, reduce repeat work, and maintain consistent results across multiple service events.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSpeeds removal of worn seals and installation of new sleeves\/seals.\u003c\/li\u003e\n  \u003cli\u003eMinimizes need for additional machining or part replacement due to damage.\u003c\/li\u003e\n  \u003cli\u003eReduces labor downtime on heavy-duty diesel service tasks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Danti ST-224C is intended for professional diesel technicians, fleet maintenance shops, and experienced DIYers who service Cummins and Paccar engines. If you regularly work on 3.9L to 9.0L Cummins engines or PX-6\/PX-8 Paccar units and need a reliable way to remove and press-fit rear main seals and wear sleeves without harming crankshaft surfaces, this tool is built for that job.\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: Is the ST-224C compatible with Cummins ISB and ISL engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It fits ISB and ISL family engines including 5.9L and 6.7L variants and related seal sizes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can this tool prevent crankshaft damage during seal service?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: When used correctly, it centers the seal and applies even force, greatly reducing risk of surface damage.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Danti","offers":[{"title":"Default Title","offer_id":48084042481822,"sku":"B0986KWGFP","price":88.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/danti-front-view-st-224c-installer.jpg?v=1785844539","url":"https:\/\/northtrailauto.ca\/products\/danti-rear-main-crankshaft-seal-wear-sleeve-installer-st-224c-for-cummins-paccar-carbon-steel-heavy-duty","provider":"North Trail Auto","version":"1.0","type":"link"}