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- EnginesHow to Find Your Truck Engine Serial NumberMost heavy-duty truck engines carry a serial number on a dataplate or emissions label on the engine itself, and many also have a number stamped into the block. If the tag is missing or painted over, the ECM, the truck's build records, or a dealer lookup by VIN can usually recover it.Read guide
- EnginesHow to Identify a Cummins X15 vs ISXThe fastest way to tell a Cummins X15 from an ISX or ISX15 is to read the engine dataplate, which states the model name, engine serial number, and CPL. Model year and emissions hardware help confirm it: the X15 name arrived with the 2017 emissions generation, while earlier engines in the family were sold as ISX and later ISX15.Read guide
- EnginesHow to Identify a Detroit DD15To identify a Detroit DD15, read the engine emissions label and the serial number stamped on the block, then confirm with the ECM using diagnostic software or a dealer VIN lookup. The DD13, DD15, and DD16 look similar from the outside, so the label and serial number are more reliable than visual inspection.Read guide
- EnginesWhat Is a Cummins CPL Number?A Cummins CPL (Control Parts List) number identifies the specific parts configuration an engine was built with, such as fuel system, turbo, and related components. It is printed on the engine dataplate alongside the engine serial number (ESN), and together they are the most reliable way to match a replacement Cummins engine.Read guide
- EnginesUsed vs Rebuilt vs Remanufactured Truck EnginesA used engine is a pulled engine sold in its as-removed condition, a rebuilt engine has been disassembled and repaired with worn or failed parts replaced, and a remanufactured engine has generally been restored to a defined factory-type specification in a controlled process. The right choice depends on budget, downtime, how long you plan to keep the truck, and the documentation behind the specific unit.Read guide
- EnginesHow to Buy a Used Semi Truck EngineTo buy a used semi truck engine, start by identifying your current engine by serial number and configuration, decide whether you need a long block or complete engine, then compare candidate engines on configuration, condition information, written terms, and freight. Confirm compatibility in writing before payment and plan the core return and installation in advance.Read guide
- TransmissionsHow to Identify an Eaton Fuller TransmissionTo identify an Eaton Fuller transmission, find the identification tag on the transmission case and record the model number, serial number, and any bill of materials or assembly number. The model number generally encodes the transmission family, torque rating, and number of forward speeds, which are the key details for matching a used replacement.Read guide
- TransmissionsManual vs Automated Manual vs Automatic Truck TransmissionsA manual truck transmission uses a driver-operated clutch and shifter, an automated manual (AMT) uses a manual-style gearbox with computer-controlled clutch and shifting, and a fully automatic uses a torque converter and planetary gears. Each type has different replacement considerations, especially AMTs and automatics, which depend on matching electronic controls and software.Read guide
- EnginesUsed Diesel Engine Buyer ChecklistBefore buying a used truck engine, confirm the exact identification and configuration, gather all available condition evidence, get price, core, and warranty terms in writing, and plan freight, receiving, and installation. Anything you cannot confirm should be written down as an unknown and factored into the decision.Read guide
- EnginesTruck Engine Freight and Delivery: What to ExpectUsed truck engines usually ship as LTL or flatbed freight, secured to a skid or in a crate with fluids drained. Delivery details like a liftgate, commercial versus residential address, and unloading equipment affect how smoothly it goes, and you should inspect the engine and note any damage on the bill of lading before signing.Read guide
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