03 37017 002 AL Locking Diesel Fuel Cap For Freightliner Cascadia Columbia 96 18

Product Overview

Protect your diesel fuel with this AL locking diesel fuel cap, a direct replacement for 1996–2018 Freightliner Cascadia and Columbia models. It prevents fuel theft, siphoning, and contamination while maintaining a tight seal. Built for fleet operators and owner-operators, this AL locking diesel fuel cap adds security to everyday fueling without slowing down your schedule.

Key Features & Performance

• Solid aluminum body resists corrosion and withstands extreme weather
• Keyed locking mechanism secures the fuel filler neck against unauthorized access
• Precision O-ring seal prevents diesel leaks and keeps moisture out of the tank
• Direct thread-on installation replaces the factory cap — no modifications needed
• Heavy-duty construction meets the demands of long-haul and vocational trucks

Fitment & Compatibility

• 1996–2018 Freightliner Cascadia
• 1996–2018 Freightliner Columbia
• Compatible with diesel fuel filler necks on the listed models (verify thread pattern)

Common Uses

• Securing diesel tanks on fleet trucks, semi-trailers, and dump trucks
• Preventing fuel theft and siphoning at overnight parking lots and job sites
• Keeping dust, water, and debris out of the fuel system during off-road or construction use
• Replacing worn or lost factory fuel caps with a secure locking alternative
• Maintaining fuel quality for engines that sit for extended periods

Technical Specifications

• Part Number(s): 03-37017-002
• Material: Aluminum
• Cap Type: Locking diesel fuel cap

Frequently Asked Questions

Q: Will this cap fit all Freightliner Columbia models? A: It fits 1996–2018 Columbia diesel trucks with the factory filler neck; always check thread size before purchase to confirm compatibility.

Q: Are spare keys available? A: Yes, replacement keys can be cut by a locksmith using the lock cylinder code; the cap typically includes two keys with purchase.

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