Our Story
Founded in 2022, United Auto Parts delivers on a straightforward promise: premium, tested used engines and transmissions at honest prices, backed by outstanding service. We infuse every part of our business with discipline, honesty, and precision.
From our base in Sheridan, Wyoming, we've expanded from a local shop to a go-to supplier for customers nationwide across all 50 states.
Our Mission
To provide high-quality, affordable used OEM auto parts with exceptional customer service, helping vehicle owners save money while maintaining their vehicles' performance and reliability.
Why Choose Us?
Save 60-80% on Premium OEM Parts
Get genuine factory parts at a fraction of dealership prices without compromising quality.
ASE-Inspected Quality
Every part is thoroughly inspected and tested by certified technicians before shipment.
90-Day Warranty
All parts come with a comprehensive 90-day warranty for your peace of mind.
Fast 2-5 Day US Shipping
Quick nationwide delivery from multiple warehouses with real-time tracking.
Quality Parts We Offer
Engine Components
Complete assemblies & parts
Transmissions
Automatic & manual options
Body Parts
Bumpers, fenders & more
Returns & Refunds Policy
30-Day Money-Back Guarantee
We stand behind our parts with a hassle-free 30-day return policy.
Return Eligibility
- Parts must be returned within 30 days of purchase
- Must be in original condition and packaging
- Uninstalled and unused (unless defective)
- Include all original accessories and documentation
How to Return
- Contact Us: Call (888) 508-5873 or email support@unitedautoparts.org for return authorization
- Receive RMA Number: We'll provide a Return Merchandise Authorization number
- Package Securely: Use original packaging or equivalent protective materials
- Ship Back: Send to the address provided with your RMA number
Refund Process
- Inspection upon receipt (1-2 business days)
- Refund processed to original payment method
- Refund appears in 2-3 business days
- Email confirmation sent when refund is issued
Return Shipping Costs
- Defective/Wrong Part: We cover return shipping
- Changed Mind: Customer responsible for return shipping
- Restocking Fee: 15% restocking fee may apply for non-defective returns
Non-Returnable Items
- Installed parts (unless defective)
- Damaged due to improper installation
- Parts missing original packaging
- Special order or custom parts
Exchanges
If you received the wrong part or need a different specification, we'll exchange it at no charge. Contact us for exchange instructions.
Damaged or Defective Items
- Inspect package upon delivery
- Report damage within 48 hours
- Take photos of damage
- We'll arrange replacement or full refund