Peterbilt 330/335/337 Hub Adapters

Frequently Asked Questions About Peterbilt 330/335/337 Hub Adapters

Will these hub adapters fit my specific Peterbilt 330, 335, or 337 model year?

Our hub adapters are designed to fit Peterbilt 330, 335, and 337 models from 2005 through 2021. However, there are variations between early models (2005-2007) and later models (2008+) due to changes in hub bolt patterns. Always verify your truck's specific hub configuration before ordering. If you're unsure, provide us with your OEM or current hub measurements, and our team can confirm compatibility.

What's the difference between aluminum and steel hub adapters, and which should I choose?

Aluminum adapters are lighter (typically 40-50% less weight than steel) and offer excellent corrosion resistance, making them ideal for weight-conscious applications or coastal environments. Steel adapters are more budget-friendly and provide superior strength for heavy-duty applications. Both options are engineered to handle commercial use, but aluminum is recommended for drivers prioritizing fuel efficiency and appearance, while steel is preferred for maximum durability in extreme conditions.

Do I need special tools or professional installation for these hub adapters?

Installation requires standard shop tools. Most experienced mechanics can complete installation in 2-3 hours per axle. Critical requirements include torquing lug nuts to manufacturer specifications (typically 450-500 ft-lbs) and ensuring proper hub centering. We strongly recommend professional installation if you're not experienced with heavy truck wheel assemblies, as improper installation can lead to wheel separation.

What thickness hub adapter do I need for my wheel conversion?

Hub adapter thickness depends on your specific wheel conversion needs. Common thicknesses range from 2 inches to 4 inches. To determine the correct thickness, measure the distance needed between your hub face and the desired wheel mounting surface, accounting for brake clearance and wheel offset. Most customers converting to aluminum wheels require 3-inch adapters, while super single conversions typically need 4-inch adapters. Contact us with your current and desired wheel specifications for personalized recommendations.

Are these hub adapters DOT approved and will they affect my warranty?

All our hub adapters meet or exceed DOT safety standards and are manufactured from certified materials with proper load ratings for commercial use. However, any aftermarket modification can potentially affect your vehicle warranty. We recommend checking with your dealer before installation. Keep all documentation and ensure adapters are installed according to specifications. Many fleet operators use these adapters without warranty issues, but individual dealer policies may vary.