Taesayl 2 1/4" Diesel Fuel Cap for International 4300 DuraStar — Aluminum, 11.5 TPI NPSH with Stainless Safety Chain

If you operate International DuraStar, 4300/4700/4800 series or related medium-duty trucks, a reliable fuel cap keeps fuel secure, reduces evaporation and prevents accidental loss on the road. This Taesayl cap reproduces factory dimensions and threads—2 1/4" diameter with 11.5 TPI NPSH threading—so it installs easily and performs like the original equipment.

Will this cap fit my International truck model?

Yes—this cap is made to match the original fuel filler size and threading used on a range of International and Ford medium-duty trucks. Confirm the filler neck dimensions and thread type on your vehicle before ordering.

• Fits International DuraStar (2002–on) and International 4300 (2002–on)
• Compatible with International 4700/4800 (1990–2002), 4900 (1990–2001)
• Also fits International 4100/4200/4400 (2002–2016) and several Ford F-series and C6500/TopKick models
• Thread specs: 2 5/16" cross-threaded filler neck, 2 1/4" cross-threaded cap, 11.5 TPI NPSH

How durable is the Taesayl fuel cap and what materials are used?

This cap is machined from aluminum to meet OEM-like standards for durability and corrosion resistance. The build quality resists cracking and deformation under regular commercial use while remaining lightweight for easier handling.

• Aluminum body built to original-factory quality expectations
• Stainless-steel safety chain minimizes risk of losing the cap during refueling
• Robust sealing structure reduces fuel vapor loss and helps protect against contaminants

What practical benefits does the safety chain and sealing design provide?

The attached stainless-steel safety chain prevents the cap from falling off on rough roads or being left behind after refueling. The sealing profile recreates OEM pressure fit to limit fuel evaporation and helps maintain fuel system integrity during long hauls.

• Chain keeps cap secured to vehicle during service stops and rough terrain
• Sealing layout reduces fuel evaporation and potential contamination
• Helps avoid roadside checks and downtime caused by a missing cap

Who is this for? Fleet managers, owner-operators and maintenance technicians who need an affordable, OEM-compatible replacement fuel cap for International and certain Ford medium-duty trucks will find this Taesayl cap practical. It suits vehicles requiring a 2 1/4" diameter cap with 11.5 TPI NPSH threading and those wanting a durable aluminum option with a safety chain to prevent fuel loss and operational interruptions.