Skip to product information
Usually ships in 2–4 business days.
2 1/4 Locking Diesel Fuel Cap for International 4300 4400 for Ford Reefer Trailer
$87.99
Sale price
$87.99
Regular price
Available to Order
This Locking Diesel Fuel Cap is a 2-1/4 inch replacement cap compatible with International 4300, 4400, reefer trailers, and Ford trucks.
Need help finding the right part? Talk with a parts expert today.
Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT
Live Chat: Available 24/7
I needed a forklift part and wasn’t sure which one fit. They asked for the model and serial number, got back to me quickly, and made sure I ordered the right one. Really helpful.
Randy W. — Verified customer
Product Overview
The 2-1/4 inch locking diesel fuel cap secures your tank against fuel theft and contamination on International 4300, 4400 series, reefer trailers, and Ford diesel models. Constructed with a weather-tight seal and heavy-duty lock, this locking diesel fuel cap helps prevent siphoning and keeps debris out of the fuel system. Fleet operators and independent truck owners rely on this locking diesel fuel cap for dependable diesel security every day.
Key Features & Performance
- Keyed locking mechanism with two included keys deters fuel theft
- Heavy-duty die-cast metal and reinforced plastic body withstands harsh environments
- Integrated gasket provides a tight seal against moisture, dust, and fuel vapors
- 2-1/4 inch diameter fits standard non-threaded diesel filler necks
- Quick twist-on installation – no tools required
- Corrosion-resistant plating maintains smooth operation over time
Fitment & Compatibility
- International 4300 (2-1/4" filler neck)
- International 4400 (2-1/4" filler neck)
- Reefer trailers with a 2-1/4" non-threaded diesel tank inlet
- Ford F-250/F-350/F-450/F-550 diesel trucks (select models – verify filler neck diameter)
Common Uses
- Securing saddle tanks and auxiliary diesel tanks on semi-trucks
- Preventing fuel siphon theft in fleet yards and job sites
- Replacing lost or damaged fuel caps on reefer trailer generator tanks
- Upgrading standard caps with a lock on Ford Super Duty diesel pickups
Technical Specifications
- Cap Diameter: 2-1/4 Inches
- Lock Type: Keyed Lock (2 Keys Included)
- Material: Die-Cast Metal / Reinforced Polymer
- Application: Diesel Fuel Tanks
- Neck Type: Non-Threaded (Push-On / Twist-Lock)
Frequently Asked Questions
Q: Does this cap include keys? A: Yes, the locking diesel fuel cap comes with two keys so you can keep a spare.
Q: Will this fit all Ford diesel trucks? A: It fits Ford models equipped with a 2-1/4 inch non-threaded filler neck; always measure your existing cap diameter before purchase to ensure compatibility.
Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.