Engine Builder

    Mechanic & Engine Technician

    CIP Name: Engine Builder|CIP Code: 47.0615
    SOC Code: 51-2031

    Apply technical knowledge and skills to the building and reconstruction of automotive and commercial vehicle engines.

    $53K
    Median Salary
    -21.1%
    Job Growth
    6mo-9mo
    Training
    2.8K
    Jobs/Year

    What Engine Builders Do

    Apply technical knowledge and skills to the building and reconstruction of automotive and commercial vehicle engines.

    Common Tasks

    • 1Read and interpret assembly blueprints or specifications manuals, and plan assembly or building operations.
    • 2Inspect, operate, and test completed products to verify functioning, machine capabilities, or conformance to customer specifications.
    • 3Position or align components for assembly, manually or using hoists.
    • 4Set and verify parts clearances.
    • 5Verify conformance of parts to stock lists or blueprints, using measuring instruments such as calipers, gauges, or micrometers.

    What You'll Learn

    cylinder head and blockcrack repaircrankshaft inspection and repairconnecting rods and pistonsbalancingblock preparationdisassembly and repairengine assemblygas and diesel technologyinspection and machining

    Types of Engine Builders

    AssemblerAssembly Line WorkerCell TechnicianEngine AssemblerEngine BuilderField Service TechnicianFitterLarge Engine AssemblerMachine AssemblerMechanical Assembler

    Work Environment

    Locations

    • • Engine rebuild and machine shops
    • • Manufacturing and assembly plants
    • • Heavy equipment and diesel repair facilities
    • • Fleet maintenance garages
    • • Specialty performance shops

    Schedule

    Work is usually a set, routine shift with steady production deadlines and periods of high time pressure.

    Physical Demands

    The job involves long periods of standing and frequent handling of parts and tools, with repetitive motions. Expect regular bending/twisting and occasional kneeling/crouching while positioning and aligning components.

    Salary & Job Outlook

    Median $52,540
    $37,960$74,297+
    Entry Level
    10th percentile
    $37,960
    Early Career
    25th percentile
    $42,785
    Median
    50th percentile
    $52,540
    Experienced
    75th percentile
    $70,054
    Top Earners
    90th percentile
    $74,297+

    National Employment: 38,400 jobs

    Top Paying States

    Why Demand May Grow

    Demand can rise when fleets and industrial equipment need rebuilding to extend service life instead of buying new. Growth can also come from performance, racing, and specialty engine work that requires precise machining and assembly.

    Skills You'll Need

    Mechanical aptitude and troubleshootingPrecision measuring (micrometers, calipers, gauges)Blueprint/specification readingAttention to detail and quality controlHand-tool and shop-equipment proficiencyUnderstanding of gas and diesel engine systemsPhysical stamina and safe material handlingTeamwork and communication in a production environment

    Pros & Cons

    Pros

    • Hands-on work building and rebuilding complex engines
    • Transferable skills across automotive, diesel, and industrial equipment
    • Clear quality standards and measurable results
    • Opportunities to specialize in performance or precision machining
    • Often steady, predictable shift schedules

    Cons

    • Projected employment decline in some assembly roles
    • Repetitive work with high attention-to-detail demands
    • Physically taxing (standing, lifting/handling parts, awkward positions)
    • Time pressure to meet production or turnaround deadlines
    • Exposure to noise, oils, solvents, and metal debris without proper PPE
    FAQ

    Common Questions About the Engine Builder Trade

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