Rebuild with confidence. When your CAT 3406E or C15 engine needs an in-frame refresh, the PDI Big Boss Overhaul Kit delivers premium internal components designed to restore compression, reliability, and service life\u2014without the downtime or cost of a full teardown.<\/p>\n
Built for high-hour, high-load applications, this kit is trusted by engine builders, fleets, and owner-operators who demand durability beyond standard replacement parts.<\/p>\n
\u2022 Complete in-frame solution for CAT 3406E & C15 engines
\n\u2022 Laser-hardened top ring grooves for increased piston durability
\n\u2022 DLC-coated piston pins and top piston rings for reduced friction and wear
\n\u2022 Precision-engineered components for consistent compression
\n\u2022 Built for heavy-duty, high-mileage applications
\n\u2022 Backed by PDI\u2019s Big Boss Warranty<\/p>\n
This PDI Big Boss In-Frame Overhaul Kit includes the critical components required for a professional in-frame rebuild:<\/p>\n
\u2022 (6) Cylinder Kits (pistons, liners, and rings)
\n\u2022 (6) Rod Bearing Sets
\n\u2022 (6) Piston Oilers
\n\u2022 (1) Main Bearing Set
\n\u2022 (1) Upper Gasket Set
\n\u2022 (1) Oil Pan Gasket<\/p>\n
Every component in this kit is engineered to meet the demands of real-world heavy-duty use\u2014long hours, sustained loads, and high operating temperatures. Big Boss overhaul kits are built to go beyond standard rebuild expectations, helping extend engine life and protect your investment.<\/p>\n
Fits:<\/strong> PDI designs and manufactures heavy-duty diesel engine components trusted by professionals across the industry. From overhaul kits, cylinder heads, injectors and supporting components, every product is built with a focus on strength, precision, and long-term reliability.<\/p>\n","protected":false},"excerpt":{"rendered":" The PDI Big Boss In-Frame Overhaul Kit for CAT 3406E & C15 features laser-hardened top ring grooves for extended piston life, DLC-coated piston pins, and DLC-coated top piston rings\u2014engineered for reduced friction, superior wear resistance, and long-term reliability.<\/p>\n","protected":false},"featured_media":107,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[22],"product_tag":[],"class_list":["post-110","product","type-product","status-publish","has-post-thumbnail","product_cat-overhaul-kits","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/bigwheelinc.com\/shop\/wp-json\/wp\/v2\/product\/110","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bigwheelinc.com\/shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/bigwheelinc.com\/shop\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/bigwheelinc.com\/shop\/wp-json\/wp\/v2\/comments?post=110"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bigwheelinc.com\/shop\/wp-json\/wp\/v2\/media\/107"}],"wp:attachment":[{"href":"https:\/\/bigwheelinc.com\/shop\/wp-json\/wp\/v2\/media?parent=110"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/bigwheelinc.com\/shop\/wp-json\/wp\/v2\/product_brand?post=110"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/bigwheelinc.com\/shop\/wp-json\/wp\/v2\/product_cat?post=110"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/bigwheelinc.com\/shop\/wp-json\/wp\/v2\/product_tag?post=110"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n\u2022 Caterpillar 3406E
\n\u2022 Caterpillar C15<\/p>\nWhy PDI?<\/h3>\n
Built for serious rebuilds. Trusted for real-world work.<\/h3>\n