Kenworth T600 Fuel Tanks

Frequently Asked Questions About Kenworth T600 Fuel Tanks

What size fuel tanks are available for my Kenworth T600, and how do I know which one fits?

Kenworth T600 fuel tanks typically come in 100, 120, and 150-gallon capacities. To determine the right fit, check your truck's model year (1985-2007) and measure the mounting strap spacing on your current tank. Most T600 models use 26-inch or 31-inch strap spacing. You'll also need to verify whether you need a driver side or passenger side tank, as they have different inlet/outlet configurations. If you're unsure, locate your OEM and contact us with your truck's specifications for exact fitment guidance.

Are aftermarket aluminum fuel tanks as durable as OEM steel tanks?

Yes, quality aftermarket aluminum tanks often outlast steel OEM tanks. Aluminum tanks resist corrosion better than steel, especially in areas with road salt exposure. Look for tanks with 0.080" to 0.125" wall thickness and welded seams rather than bolted construction. Premium aftermarket brands use aircraft-grade aluminum alloy that weighs 65% less than steel while maintaining structural integrity. The main trade-off is that aluminum can be more susceptible to impact damage, but proper mounting and protective steps eliminate most concerns.

What's involved in installing a replacement fuel tank on my T600?

Installation typically takes 2-4 hours and requires basic hand tools plus a floor jack or transmission jack to support the tank. You'll need to drain the existing tank, disconnect fuel lines and sending unit wiring, remove mounting straps, and carefully lower the old tank. Critical steps include transferring the fuel sending unit (check the gasket condition), ensuring proper strap alignment, and using new rubber isolators between the tank and straps. Most installations don't require cutting or welding, but you may need to adjust strap length depending on tank size changes.

Do I need to replace other components when installing a new fuel tank?

We recommend replacing several items during tank installation to prevent future issues. New rubber fuel lines (especially if yours are over 5 years old), fuel tank straps if showing corrosion, rubber strap isolators, and the sending unit gasket are essential. Consider adding a new fuel cap and anti-siphon device if not included with your tank. If switching from steel to aluminum, you may need different mounting hardware due to the weight difference. Budget an extra $50-150 for these supporting components to ensure a trouble-free installation.

What's the difference between polished and plain aluminum fuel tanks?

Plain aluminum tanks have a brushed or mill finish that requires minimal maintenance and hides minor scratches well. Polished aluminum tanks feature a mirror-like finish that enhances your truck's appearance but requires regular polishing (every 2-3 months) to maintain the shine. Both offer identical performance and durability. Polished tanks typically cost $75-150 more than plain finish. If you're running polished wheels or other chrome accessories, a polished tank completes the look. For work trucks or those in harsh environments, plain aluminum proves more practical.