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PART # FTA-C-12-C Freightliner M2 Truck Non-Locking Diesel Fuel Cap

PART # FTA-C-12-C Freightliner M2 Truck Non-Locking Diesel Fuel Cap



(Price is for one Cap)

Medium Duty M@ Freightliner Truck Non-Locking Fuel Tank Cap

Chrome Plated


220°F Thermal Relief 

8.00” Chain & 6.50” Bail

W/'DIESEL ONLY' (No logo)

Fuel Tank Must be Vented


    1. All Cap designs/styles have been "Drop Tested" to meet DOT qualifications for HWY Transportation Fuel Tank safety. FMCSA-39367

    2. Always measure the inside diameter (ID) of Fuel Cap for a more positive Identification if there is any question as to which Cap to use.

    3. Should the Cap not be available - measure the outside diameter (OD) of the Fill Tank Neck to determine inside Diameter (ID) of Cap.

    4. Always make sure and if the Tank is either Vented or non-Vented in order to spec correct Vented or Non-Vented Cap.

    (note: a Vented Cap is made to work with a non-Vented Tank; it is also safe to use on a Diesel Fuel Tank that is already Vented) a non-Vented Tank Must have a Vented Cap to operate properly.

    5. The inside diameter (ID) of Caps used with Low-Sulfur labeled Diesel Fuel Tanks are smaller and have different treads than Caps used with Diesel Fuel Tanks that have no Low Sulfur Label.

    6. All Caps are Threaded Female style. (except the Peterbilt Lever Style and Freightliner Cam-Cap Style)
    Some Older Fuel Tank fill necks (pre 2000) may have a different size and thread than current Tanks.

    7. Though Steel Tanks are not as common in the HD Truck Industry as Aluminum, it is recommended to clarify whether the tank is Aluminum or Steel.

    8. NPSM Threaded Caps will not fit NPSL or NPT Fill Neck Threads. However, NPSL will fit NPSM threaded Fill Necks.

    Terminology Definitions

    SCH Schedule

    NPSM National Pipe Straight Medium

    NPSH National Pipe Straight Hose

    NPSL National Pipe Straight Loose

    UNNS United National Non-Standard

    UN United National

    Triple Lead Three Starts – Threads

    NS Non-Standard

    Bail End of chain connection

    Full Function Thermal – Pressure – Vented

    Thermal Relief Over Temp Safety Feature

    Pressure Relief Over Pressure Safety Feature


    CROSS REFERENCE: 03-37017-000

    • S21361, 600148, 0337017000, 337017000


    • VMRS: 053010001
    • Venting: 220F Thermal Relief
    • Cam Type: 1/4 Turn
    • Sales Unit: 1 Ea.
    • Height Each: 2.200 In.
    • Width Each: 6.000 In.
    • Length Each: 8.100 In.
    • Weight Each: 1.180 lbs.

    • M2 or Medium Duty Box Truck applications)
    • Manufactuer Part Number - FTA-C-12-C
    • Manufactuer - Fuel Tank Accessories
    • Brand - Fuel Tank Accessories
    • Non-Locking Fuel Cap Applications
    • Not sold in pairs - Select 2 for a pair


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