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Volvo, Mack, International Locking Fuel Cap
Volvo, Mack, International Locking Fuel Cap Fuel Cap Measurement Fuel Neck Measurement Outside Diameter 4" Threaded Fuel Tank Necks

Volvo, Mack, International Locking Diesel Fuel Caps 

Made In USA
Price: $52.50 - $73.50

Fuel Caps For Volvo, Mack, International (For use with diesel Fuel Tanks NOT LABELED "LOW SULFUR". Usually pre 2004 for Volvo. Nearly all Cass 8 International & Mack use the 3.375" Inside Diameter x 8 NPSL Fuel Caps):
Fuel Caps For Volvo (For use with Diesel Fuel Tanks LABELED "LOW SULFUR". Uses 2.88" Inside Diameter x 8 UNNS Fuel Caps)

!Please Choose Your Fuel Cap

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Prevent thieves from stealing your fuel!

Top Features:

  • Aluminum 3.0" Cap Assembly
  • For Diesel Fuel Tanks
  • 8 NPSL / LOCKING (ID of Cap 3.375”)
  • 8 UNNS / LOCKING (ID of Cap 2.88”)
  • Fuel Caps For Volvo, Mack, International (Diesel Fuel Tanks NOT Labeled "Low Sulfur")
  • Fuel Caps For Volvo (for Diesel Fuel Tanks Labeled "Low Sulfur")
AvailabilityIn Stock
Returns30 days w/ 15% Restocking Fee
Warranty90 Days
ShippingSee Cart
ManufacturerFuel Tank Accessories
Model No.Several
  • Shipping GuideShipping Guide

For accurate measurement, it is essential to measure the Inside Diameter (ID) of Fuel Cap. If the Fuel Cap is not available, measure the Outside Diameter of the Fuel Neck to determine Inside Diameter of Cap.

When you Order a pair of Locking Fuel Caps, they will be Keyed Alike (use the same key).

Fuel cap that fits Volvo, Mack, & International. It has 8" chain with 6.5" bail so you don't drop or lose your cap while fueling. It also features Pressure Relief (Over Pressure) Locking.

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

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.

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. (See the Volvo Description on the above PDF File as an example)

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.

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.

NPSM (National Pipe Straight Medium) Threaded Caps will not fit NPSL (National Pipe Straight Loose) or NPT Fill Neck Threads. However, NPSL will fit NPSM threaded Fill Necks.

Other Features:

  • 220° F Thermo Relief
  • Pressure Relief (Over Pressure) Locking
  • Threaded Cap
  • ID under cap of FTA-C-69 & FTA-C-70: 90-02269
  • ID under cap of FTA-C-80 & FTA-C-51C: 90-00980
  • "Drop Tested" to meet DOT qualifications for HWY Transportation Fuel Tank safety. FMCSA-39367

Example Fuel Cap Measurement

Example Proper Fill Neck Measurement