What Is the Magnuson-Moss Warranty Act?

 

What Is the Magnuson-Moss Warranty Act?

The Magnuson-Moss Warranty Act (1975) explained: how it protects your right to install aftermarket parts without voiding your vehicle warranty.

The Magnuson-Moss Warranty Act is a United States federal law (15 U.S.C. §2301 et seq.) enacted in 1975 that governs consumer product warranties. For automotive enthusiasts, it is the most important legal protection when installing aftermarket parts — it prevents vehicle manufacturers from voiding warranties solely because aftermarket parts are installed.

📌 Key Takeaways

  • The Magnuson-Moss Act (1975) prevents manufacturers from voiding warranties due to aftermarket parts
  • Manufacturers must PROVE the aftermarket part caused the specific issue to deny coverage
  • Installing a carbon fiber steering wheel does NOT void your entire vehicle warranty
  • Manufacturers can only deny coverage for issues directly caused by the installation
  • The burden of proof is on the manufacturer, not the consumer

Magnuson-Moss Warranty Act aftermarket parts

Key Provisions for Aftermarket Parts

  1. Cannot void warranty for aftermarket parts: A manufacturer cannot void your warranty solely because you installed an aftermarket part
  2. Must prove causation: To deny warranty coverage, the manufacturer must prove the aftermarket part caused the specific failure
  3. Burden of proof on manufacturer: The manufacturer (not the consumer) must demonstrate the causal connection
  4. Coverage for unrelated issues: The manufacturer must still honor warranty for issues unrelated to the aftermarket part

How This Applies to Carbon Fiber Steering Wheels

If you install a carbon fiber steering wheel (with OEM airbag retained):

  • ✅ Cannot void: Engine, transmission, suspension, electrical, body warranty
  • ✅ Cannot void: Warranty for any issue unrelated to the steering wheel
  • ⚠️ Can deny: Coverage for airbag connector failure IF caused by improper installation
  • ⚠️ Can deny: Coverage for steering angle sensor failure IF caused by improper installation

CarbonTailor wheels retain all OEM safety equipment, minimizing warranty concerns. Professional installation recommended for owners concerned about warranty. Learn more →

CarbonTailor — Custom Carbon Fiber Automotive Accessories | carbontailorinfo@gmail.com | +1 (971) 326-5921