Semi Truck Locking Diesel Fuel Cap Cover for Freightliner Sterling Western Star

Product Overview

This locking diesel fuel cap cover provides secure fuel tank protection for Freightliner, Sterling, and Western Star heavy-duty trucks. It prevents unauthorized access, siphoning, and fuel contamination, giving fleet managers and owner-operators peace of mind. The cap cover is built to withstand harsh weather and daily rigors, preserving fuel quality on every route.

Key Features & Performance

• Keyed locking mechanism deters fuel theft and tampering
• Durable metal construction with corrosion-resistant finish
• Precision-engineered to fit diesel fuel filler necks on Freightliner, Sterling, and Western Star models
• Rubberized seal prevents moisture and debris intrusion
• Easy one-hand operation with included key set

Fitment & Compatibility

• Freightliner Cascadia, Century, Columbia, and other Class 8 models
• Sterling trucks (A-Line, L-Line, and other heavy-duty models)
• Western Star 4900, 5700, and additional commercial trucks
• Many aftermarket diesel tanks with standard semi-truck filler necks

Common Uses

• Long-haul fleet fuel security
• Owner-operator theft prevention
• Intercity and regional delivery trucks
• Refrigeration unit and generator fuel tanks on trailers
• Diesel tank storage at terminals and yards

Frequently Asked Questions

Q: Does this cap fit all Freightliner, Sterling, and Western Star truck models? A: It is designed to fit the majority of diesel fuel filler necks on these brands; verify your tank opening diameter for a precise match.

Q: How many keys are included with the locking fuel cap? A: The cap comes with two keys, providing a spare for convenience and backup.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.