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    Bulb Sizes (Headlight, Tail, Fog)

    2024 Freightliner M2 106 Bulb Size Guide

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    Quick Reference

    LocationBulb SizeType
    Low Beam HeadlightH11Halogen/LED
    High Beam HeadlightH9Halogen/LED
    Fog LightH10 or H16 (PSX24W)Halogen/LED
    Daytime Running Light3157LL or 7443Incandescent/LED
    Front Turn Signal3157LL or 7443Incandescent/LED
    Rear Turn Signal3157LL or 7443 or LED ModuleIncandescent/LED
    Brake Light3157LL or LED ModuleIncandescent/LED
    Tail Light3157LL or LED ModuleIncandescent/LED
    Reverse Light921Incandescent/LED
    License Plate Light194Incandescent/LED
    Side Marker Light194 or LED ModuleIncandescent/LED
    Dome/Map Light578 / 212-2 / T10 WedgeIncandescent/LED

    Note: The 2024 Freightliner M2 106 often comes with factory-installed LED lighting for many exterior functions, particularly on higher trim levels or with specific option packages. Always confirm the existing bulb type before purchasing replacements.

    The 2024 Freightliner M2 106 is a versatile workhorse, and ensuring its lighting system is in top condition is crucial for safety and compliance. This guide provides a comprehensive breakdown of the bulb sizes and types for various lighting functions on your M2 106.

    Headlights:

    The Freightliner M2 106 typically offers two primary headlight configurations: halogen or full LED. If your truck is equipped with halogen headlights, the low beams commonly utilize an H11 bulb, and the high beams use an H9 bulb. These are distinct bulbs within the same headlight assembly. Some advanced factory options and higher trim levels feature full LED headlight assemblies, where individual bulbs are not replaceable; instead, the entire LED module would need replacement if a failure occurs. This integrated LED design offers superior illumination and longevity.

    Fog Lights:

    Fog lights on the M2 106 can vary. Common halogen bulb sizes include H10 or sometimes a H16 (PSX24W). As with headlights, some M2 106 models may be equipped with factory LED fog lights, which are typically sealed units.

    Daytime Running Lights (DRL) & Front Turn Signals:

    For models with incandescent DRLs and front turn signals, the 3157LL (Long Life) or 7443 dual-filament bulb is a common choice. This bulb handles both the amber turn signal and the white DRL function. Many 2024 models, especially those with premium packages, will feature integrated LED modules for these functions within the main headlight or dedicated amber bars.

    Rear Turn Signals, Brake Lights, and Tail Lights:

    Incandescent rear lighting on the M2 106 often uses the 3157LL dual-filament bulb for combined brake and tail light functions, and sometimes for the turn signal where it's a separate bulb. However, it

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    More specs for the 2024 Freightliner M2 106

    Oil Capacity & Filter

    Capacity, weight, filter PN, drain plug torque, change interval.

    Fluid Type Specs

    Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.

    Coolant Capacity & Type

    Total system capacity, OEM coolant spec, flush interval, bleed tips.

    Transmission Fluid & Service

    Trans model, fluid spec, capacity, filter PN, service interval.

    Torque Specifications

    Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.

    Brake Pad & Rotor Specs

    Pad PNs, rotor size, min thickness, caliper torque.

    Tire Size & Pressure

    OEM size, cold psi, bolt pattern, wheel size, TPMS.

    Battery Size & Group

    Group size, CCA, AGM/flooded, dimensions, reset note.

    A/C Refrigerant & Oil

    R-134a or R-1234yf, charge oz, PAG oil spec.

    Factory Maintenance Schedule

    Service intervals by mileage, severe-duty notes, known issues.

    Towing Capacity & Payload

    Max tow, payload, GVWR/GCWR, hitch class by trim.

    Fuse Box Diagram & Amperage

    Fuse box locations, layout, amps, and what each fuse controls.

    Serpentine Belt Routing & Length

    Belt routing, length, rib count, OEM + aftermarket PNs.

    Wheel Alignment Specifications

    Camber, caster, toe ranges (front & rear), adjustability notes.

    Paint Color Codes

    All factory colors with paint codes, sticker location, touch-up tips.

    Wiper Blade Sizes

    Driver/passenger/rear blade size, attachment, OEM + cross-refs.

    Spark Plug Type & Gap

    Plug PN, gap, torque, interval by engine.

    Transmission & Axle Gear Ratios

    Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.

    Key Fob Programming

    DIY programming steps, FCC ID, fob PN, battery, transponder.

    Same spec — other model years

    Maintenance & repair guides

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    Values can vary by engine, trim and build date; check your VIN-specific service information. Updated 2026-06-24.

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