{"product_id":"2-3-8-locking-diesel-fuel-cap-for-02-and-up-freightliner-m2-small-semi-box-trucks","title":"2 3\/8 Locking Diesel Fuel Cap for 02 and Up Freightliner M2 Small Semi Box Trucks","description":"\u003cstrong\u003eThis Locking Diesel Fuel Cap is a 2 3\/8\" locking fuel cap compatible with 2002 and newer Freightliner M2 small semi and box trucks.\u003c\/strong\u003e \u003ch2\u003eProduct Overview\u003c\/h2\u003e \u003cp\u003eThe Locking Diesel Fuel Cap provides a secure, leak-resistant seal for diesel tanks on 2002–up Freightliner M2 trucks. This heavy-duty cap prevents fuel theft and contamination, ensuring reliable operation for fleet and owner-operator vehicles. With a 2 3\/8\" threaded design, the Locking Diesel Fuel Cap installs directly onto the filler neck of small semi and box truck models.\u003c\/p\u003e \u003ch3\u003eKey Features \u0026amp; Performance\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eLocking cap with key deters fuel theft and siphoning\u003c\/li\u003e \u003cli\u003ePrecision 2 3\/8\" threaded base for secure, rattle-free fit\u003c\/li\u003e \u003cli\u003eRugged metal and composite construction resists diesel fuel and UV exposure\u003c\/li\u003e \u003cli\u003eVented design prevents tank vacuum and fuel flow issues\u003c\/li\u003e \u003cli\u003eIncludes two keys and built-in dust cover to keep the lock mechanism clean\u003c\/li\u003e \u003cli\u003eDirect replacement for factory caps on 2002 and newer Freightliner M2 trucks\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e2002–2025 Freightliner M2 106\u003c\/li\u003e \u003cli\u003e2002–2025 Freightliner M2 112\u003c\/li\u003e \u003cli\u003eSmall semi trucks and box trucks with 2 3\/8\" diesel filler neck\u003c\/li\u003e \u003cli\u003eFits OEM diesel tank necks measuring 2 3\/8 inches outer diameter\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eCommon Uses\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eSecuring diesel fuel in fleet trucks to prevent unauthorized access\u003c\/li\u003e \u003cli\u003eReplacing lost or damaged fuel caps on Freightliner M2 box trucks\u003c\/li\u003e \u003cli\u003eProtecting fuel quality during long-term storage or overnight parking\u003c\/li\u003e \u003cli\u003eOwner-operators seeking a theft deterrent for high-value diesel fuel\u003c\/li\u003e \u003cli\u003eCompliance with DOT regulations requiring a secure fuel cap\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eTechnical Specifications\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCap Diameter:\u003c\/strong\u003e 2 3\/8 inches (60.3 mm) thread\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Zinc alloy and reinforced nylon\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eLocking Mechanism:\u003c\/strong\u003e Push-on key lock with 2 keys included\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVent Type:\u003c\/strong\u003e Vented\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatible Fuel:\u003c\/strong\u003e Diesel only\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e \u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will this cap fit my 2005 Freightliner M2 with a 2 3\/8\" filler neck?\u003cstrong\u003e A:\u003c\/strong\u003e Yes, this locking diesel fuel cap is designed for 2 3\/8\" necks on 2002 and newer Freightliner M2 models; always measure your neck to confirm.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does the cap come with keys?\u003cstrong\u003e A:\u003c\/strong\u003e Yes, two keys are included; the cap locks by pressing the key into the lock and turning.\u003c\/p\u003e \u003cp\u003e\u003cem\u003eProduct appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.\u003c\/em\u003e\u003c\/p\u003e","brand":"DURAFORCE","offers":[{"title":"Default Title","offer_id":53679734161681,"sku":"ZZ3A00632","price":85.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/2446\/2929\/files\/57_5cf87db5-1e1f-47e3-8517-5a57ccb66b8b.jpg?v=1781654689","url":"https:\/\/www.duraforce.com\/products\/2-3-8-locking-diesel-fuel-cap-for-02-and-up-freightliner-m2-small-semi-box-trucks","provider":"DURAFORCE","version":"1.0","type":"link"}