bansdans 3" Female 1/4-Turn Locking Fuel Tank Cap 2-Pack — Heavy-Duty Aluminium, FKM Seal for Freightliner

The bansdans 3-inch female 1/4-turn locking fuel tank cap is a heavy-duty aluminum replacement designed to seal and secure diesel Freightliner filler necks quickly and reliably.

Engineered as a direct-fit aftermarket replacement for several OEM part numbers, this two-pack fuel cap set provides corrosion-resistant aluminum construction, FKM rubber sealing, and quick quarter-turn operation for fast, tool-free installation. It’s built specifically for non-vented diesel applications on Freightliner models including Cascadia, Columbia, Century, Coronado, and M2-112 across multiple model years. The kit includes protective dust covers, a safety chain, bail, and four matching keys for theft deterrence and easier service access.

How does this cap fit my Freightliner fuel filler?

This cap is sized for a 3-inch outer filler neck diameter and configured as a female 1/4-turn locking design, matching common Freightliner non-vented openings. It replaces several OEM numbers for a straightforward swap without modifications.

• Designed for 3" outer diameter filler necks (female installation style).
• Direct-fit replacement for OEM 03-37017-000, 03-37017-002, 0334466002 and compatible part numbers.
• Fits Cascadia, Columbia, Century, Coronado and M2-112 Freightliner models (listed years).

What materials and sealing features keep fuel secure?

The body is precision machined from corrosion-resistant aluminum to withstand road conditions and exposure to fuel. A red FKM rubber gasket provides a resilient, chemical-resistant seal that minimizes leaks and limits evaporation, while the mechanical 1/4-turn locking action holds the cap firmly in place.

• Aluminum housing for long-term rust and corrosion resistance.
• FKM (fluoroelastomer) gasket for strong chemical and temperature durability.
• Quarter-turn locking mechanism for a tight, repeatable seal.

How easy is installation and daily use?

Installation is tool-free and completes in seconds thanks to the quarter-turn lock pattern—no thread chasing or special adapters needed on compatible trucks. For daily use, the included keys and protective dust covers make operation convenient while protecting the filler area from contaminants.

• Tool-free 1/4-turn installation for fast service.
• Four matched keys included for secure locking and shared access.
• Dust covers block dirt and extend component life.

What comes in the kit and which extras help fleet maintenance?

This two-pack includes everything needed for two filler necks plus spare keys and mounting accessories to simplify upkeep across a truck or trailer. The set supports routine maintenance and helps reduce downtime with easy replacement parts and a two-year after-sales warranty.

• 2 x 3" female 1/4-turn locking fuel caps with FKM gaskets.
• 2 protective dust covers, 13" safety chain, 6.5" bail and 4 matched keys.
• Packaged replacement for multiple OEM part numbers; 24-month after-sales support.

Who this product is for: fleets, owner-operators, and maintenance shops that need a durable, OEM-compatible fuel cap for diesel Freightliner trucks. If you require a non-vented, secure, and quick-install cap for Cascadia, Columbia, Century, Coronado, or M2-112 models — and you value corrosion resistance plus a dependable gasket — this bansdans two-pack is tailored to routine service, theft deterrence, and long-term fuel system protection.