Compatible Models: Non locking diesel fuel cap fit for Freightliner Cascadia 108SD Argosy Century Columbia Coronado M2 112 114SD 122SD. Please pull down to view the specific adaptation Replacement Part Number: Replace 3-37017-000 S21361, 600148, 0337017000, 337017000. The inner diameter of the fuel tank cap is 3.5", the outer diameter of your fuel filler should be 3", Please measure the outer diameter of your fuel tank fill tube prior to ordering High-quality Material: The fuel gas cap is made of high-quality die-cast aluminum alloy, which is not easy to corrode and oxidize. The fuel tank cap is equipped with a rubber sealing ring, safety chains and rings, which will not leak after installation. Semi-trailer diesel fuel tank only, ventilated, 220°F heat release, longer life Anti-theft and Anti-leakage: The non locking diesel fuel cover has a high-quality lock cylinder to prevent diesel theft. 8 inch chain and 6.5 inch steel retention wire to prevent loss of fuel cap Products Include: 2 x fuel tank cap, inside the cap there are rubber seals, safety chains, lifting rings. When installing, please clean the fuel port part, pay attention to cover the fuel tank port to prevent impurities from entering the fuel tank, and then tighten the fuel tank cap after thorough cleaning Compatible with: Fit for Freightliner Cascadia 108SD Argosy Century Columbia Coronado M2 112 114SD 122SD Fit for Freightliner Cascadia 113 2008-2018 Fit for Freightliner Cascadia 125 2008-2018 Fit for Freightliner Columbia 112 2001-2010 Fit for Freightliner Columbia 120 2001-2016 Fit for Freightliner Century 112 1996-2010 Fit for Freightliner Century 120 1996-2010 Fit for Freightliner Coronado 2003-now Fit for Freightliner Coronado New 2013-now Fit for Freightliner M2-112 2005-now Replacement Part Number: Replace 3-37017-000 S21361, 600148, 0337017000, 337017000 Product Feature: Name: Non Locking diesel fuel cap Material: Die-cast aluminum alloy Condition: 100% brand new Installation Location: Fuel tank port Purpose: Prevent diesel theft Inner Diameter: 3.5 inch Semi-trailer diesel fuel tank only, ventilated, 220°F heat release 8" chain and 6.5" steel wire Not easy to corrode and oxidize Product Includes: 2 x fuel tank cap Please Note: When installing, after removing your old fuel tank cap, please clean the fuel filler part Pay attention to cover the fuel tank port to prevent impurities from entering the fuel tank After thorough cleaning, tighten the fuel tank cap to effectively prevent diesel leakage