{"product_id":"bonbo-universal-cylinder-liner-puller-for-heavy-duty-diesel-engines-3-7-8-to-6-1-4-bore-spring-loaded-carbon-steel","title":"Bonbo Universal Cylinder Liner Puller for Heavy-Duty Diesel Engines — 3-7\/8\" to 6-1\/4\" Bore, Spring-Loaded Carbon Steel","description":"\u003cp\u003e\u003cstrong\u003eThe Bonbo Universal Cylinder Liner Puller is a heavy-duty, spring-footed tool engineered to remove wet cylinder liners from diesel engines with bores from 3-7\/8\" to 6-1\/4\" safely and without damaging the block.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis liner puller assembly is built for professional shops and experienced technicians who service Mack, Cummins, CAT, Volvo, Detroit, International and a broad range of heavy-duty diesel engines. It replaces OEM part numbers PT-6400-C, M50010-B and 3376015 and works on wet liners up to 15\" deep and with a minimum wall thickness of .148. Constructed from hardened carbon steel and featuring spring-loaded feet, the tool is designed to speed removal, reduce downtime and protect cylinder bores during extraction.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the Bonbo puller prevent damage to the cylinder block?\u003c\/h3\u003e\n\u003cp\u003eThe assembly uses adjustable, spring-loaded feet that center and grip the liner evenly, minimizing side loads and misalignment. Controlled axial pulling reduces the risk of scoring or fracturing the bore surface.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSpring-loaded feet automatically conform to liner diameter for even pressure.\u003c\/li\u003e\n\u003cli\u003eHeavy-duty carbon steel construction resists deformation under load.\u003c\/li\u003e\n\u003cli\u003eDesigned to extract liners straight out to avoid lateral contact with the block.\u003c\/li\u003e\n\u003cli\u003eCompatible with liners from 3-7\/8\" to 6-1\/4\" to ensure a proper fit rather than forceful removal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich engines and liners are compatible with this assembly?\u003c\/h3\u003e\n\u003cp\u003eThe puller covers a wide range of heavy-duty diesel applications—Mack, Cummins, CAT and many OEM trucks—supporting multiple series and Maxxforce variants. It fits wet liners within the specified bore and depth ranges, replacing common OEM pullers.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFits Mack, Cummins, Volvo, Detroit, International and CAT engines including 3176, 3196, 3300, 3400, 3500 series and C10–C16 variants.\u003c\/li\u003e\n\u003cli\u003eAlso compatible with Maxxforce DT, DT360, DTA360, DTA466, DT466, DT530, DT466E, DT530E, DT570, HT570.\u003c\/li\u003e\n\u003cli\u003eReplaces OEM PT-6400-C, M50010-B, 3376015 for direct interchangeability.\u003c\/li\u003e\n\u003cli\u003eWorks with bores 3-7\/8\"–6-1\/4\", depths up to 15\", wall thickness minimum .148\".\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat design features make it easy to use in a busy shop?\u003c\/h3\u003e\n\u003cp\u003ePractical upgrades focus on fast setup and reliable repeatable performance. The spring feet and robust central draw assembly let techs position and extract liners quickly, cutting service time.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSpring-loaded feet auto-adjust to the liner, reducing setup time.\u003c\/li\u003e\n\u003cli\u003eHigh-precision machining ensures smooth operation and fewer adjustments.\u003c\/li\u003e\n\u003cli\u003eDurable, corrosion-resistant carbon steel lowers long-term replacement costs.\u003c\/li\u003e\n\u003cli\u003eDesigned for repeated heavy use in professional repair environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat maintenance and warranty support come with the tool?\u003c\/h3\u003e\n\u003cp\u003eBasic upkeep includes cleaning and light lubrication of moving parts; inspect feet and threads for wear after heavy use. Bonbo backs the product with a 30-day satisfaction guarantee for returns and responsive customer support.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWipe clean and lightly lubricate threaded areas after each job.\u003c\/li\u003e\n\u003cli\u003eInspect feet and contact surfaces for wear or deformation periodically.\u003c\/li\u003e\n\u003cli\u003e30-day return policy for unsatisfied purchases with refund option.\u003c\/li\u003e\n\u003cli\u003eCustomer support available for fitment and operation questions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Bonbo Universal Cylinder Liner Puller is aimed at professional diesel mechanics, fleet maintenance shops and heavy-equipment rebuilders who need a dependable, OEM-compatible tool for removing wet liners across a variety of engine families. If you service Mack, Cummins, CAT, Volvo, Detroit or International heavy-duty engines and require a rugged, easy-to-operate puller that fits a broad diameter range, this assembly is built for your workflow.\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 puller fit my Caterpillar C15 wet liners?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — it fits many CAT series including C15, provided the liner bore is between 3-7\/8\" and 6-1\/4\" and up to 15\" deep.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What should I inspect before using the tool?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Check spring feet for wear, verify bore size and depth, and lightly lubricate threads for smooth operation.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Bonbo","offers":[{"title":"Default Title","offer_id":48081522294942,"sku":"B08KDTF3KS","price":204.49,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/bonbo-front-assembly-view.jpg?v=1785807275","url":"https:\/\/northtrailauto.ca\/products\/bonbo-universal-cylinder-liner-puller-for-heavy-duty-diesel-engines-3-7-8-to-6-1-4-bore-spring-loaded-carbon-steel","provider":"North Trail Auto","version":"1.0","type":"link"}