{"product_id":"e-cowlboy-crankshaft-seal-remover-installer-set-cummins-3-9l-6-7l-1989-2016-cnc-steel","title":"E-cowlboy Crankshaft Seal Remover \u0026 Installer Set — Cummins 3.9L–6.7L (1989–2016), CNC Steel","description":"\u003cp\u003e\u003cstrong\u003eE-cowlboy's front and rear crankshaft seal remover \u0026amp; installer set is a complete CNC-machined steel toolkit designed to remove and install crankshaft seals and wear sleeves on 1989–2016 Cummins and Paccar PX-6 engines without damaging components.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis precision tool set matches OEM dimensions and replaces multiple part numbers, giving technicians and DIYers a reliable way to service front and rear crank seals, install wear sleeves to the correct depth, and extract stubborn rear seals. Manufactured from heavy-duty black-anodized steel, the kit targets Cummins 4BT 3.9L, B Series 5.9L, ISB\/ISL and QSB families through model year 2016. It suits common seal and sleeve references such as 3937111, 3904353, 3802820, 3934486, 5259499 and others used across Paccar and Cummins applications.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this set protect seals and sleeves during installation?\u003c\/h3\u003e\n\u003cp\u003eThe kit is engineered to install seals and wear sleeves squarely and at the correct depth to avoid distortion or leaks. Smooth, CNC-formed faces distribute installation force evenly so rubber and metal parts aren’t warped or cut.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePrecision-machined mandrels match OEM diameters to ensure concentric seating\u003c\/li\u003e\n  \u003cli\u003eBlack-anodized steel resists corrosion and maintains straightness under impact\u003c\/li\u003e\n  \u003cli\u003eStacking\/driver pieces prevent direct hammer damage to seals\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan this remove rear crankshaft seals that are stuck or corroded?\u003c\/h3\u003e\n\u003cp\u003eYes — the remover fixtures are shaped to engage and extract rear crank seals without cutting into the housing. The design helps free seals that have seized from corrosion or long service life while minimizing risk to the crankcase bore.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSpecialized extractor geometry grips the seal for controlled removal\u003c\/li\u003e\n  \u003cli\u003eFits the common rear seal sizes used on Cummins 3.9L–6.7L engines\u003c\/li\u003e\n  \u003cli\u003eAllows removal without resorting to improvised tools that can gouge surfaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich engines and part numbers does this tool set support?\u003c\/h3\u003e\n\u003cp\u003eThe set covers a wide range of Cummins and Paccar PX-6 engines built from 1989 to 2016, including 4BT 3.9L, B Series 5.9L, ISB\/ISL 5.9L–6.7L and QSB 5.9L–6.7L variants. It directly replaces many OEM service tools and part numbers so you can match it to the factory service instructions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with Paccar PX-6 and Cummins 4BT\/ISB\/ISL\/QSB families\u003c\/li\u003e\n  \u003cli\u003eWorks with seals and sleeves like 3937111, 3904353, 3802820, 3934486\u003c\/li\u003e\n  \u003cli\u003eDirect replacement for tool\/part numbers such as 3824078, 5395259, 3164660 and ST-224C\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and build quality should I expect from this kit?\u003c\/h3\u003e\n\u003cp\u003eThe tools are CNC-machined from premium steel and finished with black anodizing for added corrosion resistance and durability. High hardness and tight tolerances help maintain alignment and longevity in a shop environment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHeavy-duty steel body for impact resistance and long service life\u003c\/li\u003e\n  \u003cli\u003eBlack-anodized finish reduces rust and keeps tolerances stable\u003c\/li\u003e\n  \u003cli\u003eManufactured to OEM-style specifications for consistent fitment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This E-cowlboy tool set is aimed at professional diesel mechanics, fleet maintenance shops, and experienced home technicians who service Cummins 3.9L–6.7L engines or Paccar PX-6 vehicles. It’s useful when you need a repeatable, damage-free method to remove and install front and rear crankshaft seals and wear sleeves, match OEM service procedures, and avoid makeshift removal techniques that risk costly repairs. The product is backed by a 30-day return policy and a 12-month warranty for added confidence.\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: Will this fit my 2005 Cummins ISB 5.9L?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The set supports ISB 5.9L models within the 1989–2016 range and matches common seal and sleeve sizes used in 2005 engines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the kit include a warranty?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. E-cowlboy backs the tool set with a 12-month warranty and a 30-day return policy.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"E-cowlboy","offers":[{"title":"Default Title","offer_id":55161265160535,"sku":"B098L951DR","price":160.91,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/e-cowlboy-front-packaging-toolset.jpg?v=1790323451","url":"https:\/\/britishgarage.co.uk\/products\/e-cowlboy-crankshaft-seal-remover-installer-set-cummins-3-9l-6-7l-1989-2016-cnc-steel","provider":"British Garage","version":"1.0","type":"link"}