Frequently Asked Questions About International 9300/9370 Fuel Tank Senders

Will these fuel tank senders fit my specific International 9300 or 9370 model year?

Our fuel tank senders are designed to fit International 9300 and 9370 models from 1987 through 2007. However, compatibility can vary based on your specific tank configuration. We recommend checking your tank dimensions and sender arm length before ordering. Most units feature adjustable arms ranging from 5 to 30 inches to accommodate different tank depths. If you're unsure about fitment, contact our support team with your VIN and tank specifications.

What's the difference between mechanical and electrical fuel senders, and which one do I need?

Mechanical senders use a float arm connected to a variable resistor and are the most common type for International 9300/9370 trucks. Electrical senders use capacitance technology and are typically found in newer models or aftermarket gauge systems. Check your gauge cluster - if it shows ohm ratings (typically 0-90 or 240-33 ohms), you need a mechanical sender. Most International trucks from this era use Stewart Warner-style 5-bolt pattern senders with 240-33 ohm resistance.

How difficult is the installation, and what tools will I need?

Installation typically takes 1-2 hours and requires basic hand tools. You'll need a 9/16" wrench for the mounting bolts, wire strippers, and electrical connectors. The main challenges include safely draining the fuel tank (recommended to be below 1/4 full), properly sealing the gasket to prevent leaks, and calibrating the sender arm length. Always use a new gasket during installation and apply fuel-resistant sealant to the mounting surface. Some installations may require dropping the tank for easier access.

Why is my new fuel sender giving inaccurate readings?

Inaccurate readings are usually caused by incorrect arm adjustment, wrong ohm range, or grounding issues. First, verify you have the correct ohm range for your gauge (240-33 ohms is standard). The sender arm must be bent to match your tank depth - too long and it will bottom out, too short and it won't read full. Ensure the sender has a solid ground connection to the tank. Some aftermarket gauges may require a different ohm range sender or additional resistors for proper calibration.

How long do these fuel tank senders typically last, and what causes them to fail?

Quality fuel tank senders typically last 5-10 years depending on fuel quality and usage conditions. Common failure points include corroded electrical contacts, worn float arm pivots, and damaged floats from ethanol-blended fuels. Signs of failure include erratic gauge readings, stuck readings, or complete gauge failure. Using fuel additives to reduce water contamination and choosing senders with stainless steel components can extend lifespan. We recommend inspecting the sender during routine tank maintenance or filter changes.