The Difference Between OEM and Aftermarket Auto Body Parts 

by | Apr 7, 2025 | Auto Repair

When repairing a vehicle after a collision, one key decision is whether to use OEM (Original Equipment Manufacturer) parts or aftermarket parts.  

Difference Between OEM and Aftermarket parts for Collision Repair 

Both options have pros and cons, and understanding the differences can help you make the best choice for collision repair Waterford. 

  1. What Are OEM Auto Body Parts?

OEM parts are made by the same manufacturer that built your vehicle. These parts are designed to match the original specifications exactly, ensuring a precise fit and factory-quality performance. 

Pros of OEM Parts: 

  • Perfect Fit – Since they are made by the original automaker, OEM parts match your vehicle’s exact specifications. 
  • Reliable Quality – These parts are built to the same standards as your original components. 
  • Warranty Coverage – Many OEM parts come with a manufacturer-backed warranty. 

Cons of OEM Parts: 

  • Higher Cost – OEM parts tend to be more expensive than aftermarket alternatives. 
  • Limited Availability – They may only be available through dealerships, which can cause delays if parts are out of stock. 
  1. What Are Aftermarket Auto Body Parts?

Aftermarket parts are made by third-party manufacturers, not the original automaker. These parts are designed to fit multiple makes and models, and they often come at a lower cost. 

Pros of Aftermarket Parts: 

  • More Affordable – Aftermarket parts typically cost less than OEM parts. 
  • Wider Selection – Many aftermarket companies offer performance or reinforced versions of replacement parts. 
  • Easier Availability – These parts are widely available through different retailers and body shops. 

Cons of Aftermarket Parts: 

  • Fit May Vary – Since they’re made to fit multiple models, aftermarket parts don’t always have a perfect fit. 
  • Quality Differences – Some aftermarket parts are well-made, but others may be lower quality than OEM. 
  • No Manufacturer Warranty – While some companies offer warranties, they may not be as reliable as OEM warranties. 
  1. Insurance Coverage and Parts Choice

Many insurance companies prefer to cover aftermarket parts because they are cheaper. However, if your policy includes an OEM parts clause, you may be able to request factory-original replacements. 

If you’re unsure about what your policy covers, ask your insurance company: 

  • Will my repairs include OEM or aftermarket parts? 
  • Can I request OEM parts if I pay the difference? 
  • Do aftermarket parts affect my warranty or resale value? 
  1. When to Choose OEM vs. Aftermarket Parts
  • OEM Parts Are Best If: 
  • You want a perfect fit and factory-quality finish. 
  • Your car is newer and still under warranty. 
  • You want manufacturer-backed durability and reliability. 
  • Aftermarket Parts Are Best If: 
  • You’re looking for a more affordable repair. 
  • You don’t mind small fit or finish differences. 
  • You need a part that is hard to find in OEM form. 

Conclusion: Difference Between OEM and Aftermarket parts for Collision Repair 

The choice between OEM and aftermarket parts depends on your budget, insurance coverage, and personal preference. OEM parts offer factory-perfect quality, but they come at a higher price. Aftermarket parts are often cheaper and more accessible, but their fit and quality can vary. Knowing the differences will help you make the best decision for your collision repair needs.