Volvo VNL Gen I Leaf Springs, Hangers & Acc.

Frequently Asked Questions About Volvo VNL Gen I Leaf Springs, Hangers & Acc.

Will these leaf springs fit my 1998-2003 Volvo VNL model, and are there differences between daycab and sleeper configurations?

Yes, our leaf springs are designed specifically for Volvo VNL Gen I models from 1997-2003. However, there are important differences between daycab and sleeper configurations. Daycab models typically use different spring pack specifications due to weight distribution differences. Always verify your truck's exact model year and configuration before ordering. Check your door jamb sticker for the suspension code or contact us with your VIN for proper fitment verification.

What's the typical lifespan of aftermarket leaf springs compared to OEM, and what grade of steel is used?

Quality aftermarket leaf springs use SAE 5160 spring steel, the same grade as OEM specifications. When properly maintained, you can expect 150,000-200,000 miles of service life, comparable to factory springs. The key factors affecting lifespan are load management, regular bushing inspection, and proper torque maintenance on U-bolts. Heavy-duty applications may see reduced lifespan, typically 100,000-150,000 miles.

Can I install these leaf springs myself, and what special tools or equipment are required?

While leaf spring replacement is possible for experienced DIY mechanics, it requires specific tools and safety equipment. You'll need heavy-duty jack stands rated for commercial trucks, a 3-ton minimum floor jack, torque wrench capable of 250-300 ft-lbs, spring compressors, and proper PPE. The job typically takes 4-6 hours per axle. Critical safety note: never work under a truck supported only by jacks. Many customers find professional installation worth the cost due to safety concerns and proper torque specifications.

Do I need to replace hangers and bushings when installing new leaf springs?

We strongly recommend replacing hangers, bushings, and shackles when installing new leaf springs. Worn hangers can cause premature spring failure and alignment issues. Look for signs of elongated mounting holes, cracks, or excessive rust on hangers. Rubber bushings should be replaced if they show cracking, compression set, or are more than 5 years old. Complete replacement ensures proper suspension geometry and prevents premature wear of your new springs.

What's the difference between standard and heavy-duty leaf spring options for my VNL?

Standard leaf springs are rated for typical highway applications with GVWR up to 52,000 lbs. Heavy-duty options feature additional leaves (typically 12-13 leaves versus 10-11 standard), thicker individual leaves, and are rated for GVWR up to 65,000 lbs. Heavy-duty springs provide less deflection under load but create a stiffer ride when empty. Consider your typical payload and application - vocational trucks benefit from heavy-duty springs, while highway tractors often perform better with standard specifications.