Used Engines · Transmissions · Powertrain Parts
Find the Right Engine or Transmission for Your Vehicle
Quality used auto parts. Competitive prices. Nationwide shipping.
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Real inventory photos — every part pulled, inspected, and tested before it ships.
Used Transmission
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Used Axle Assembly
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The United Prime Difference
Why Choose Us
Our goal is to make the buying process as seamless and worry free as possible for our customers and to provide after sales service in a professional manner. We want to treat you like we would want to be treated.
Shipping’s on Us
Free initial shipping on all orders, delivered expeditiously to your door.*
Easy Replacements
Peace of mind with a straightforward returns and replacement process.
Reliability
Reliable, quality used OEM auto parts, engines, and transmissions.
Warranty
A standard warranty backs every engine and transmission we sell.
Timely Delivery
We strive to fulfill every customer order in a timely manner.
Competitive Pricing
Multiple pricing options on every product to meet your budget.
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Testimonials
What Our Customers Say
Real feedback from drivers and shops who’ve bought engines, transmissions, and parts from us.
Ordered a used transmission for my Silverado and it showed up faster than quoted. Bolted right in, no surprises — exactly as described.
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Marcus Reyes
Austin, TX
Wide selection, a website that’s actually easy to use, and quick order processing. The engine we received was in excellent condition — quality was outstanding.
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Denise Whitfield
Columbus, OH
Called in with a VIN and had pricing back within the hour. Quick service, quality parts, and the warranty gave me real peace of mind. Highly recommend.
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Oliver Kazansky
Tacoma, WA
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