Used engines & transmissions, shipped to your door.
A trusted nationwide supplier of quality used and remanufactured engines and transmissions - tested, warranty-backed, and covered by a 12-month parts warranty. Free freight to a commercial address in 5-7 business days.
ASE-Certified
Experts on Staff
12-Month Warranty
Parts Replacement
Free Freight
Commercial or Terminal
4.4 / 5 · 134
Google Reviews
What we stock
Engines and transmissions for nearly anything on the road
Every part is tested, inspected, and matched to your exact vehicle before it ships - backed by a 12-month parts-replacement warranty and free delivery nationwide.
Find my part
Find your exact part in seconds
Tell us your vehicle and the part you need. A specialist confirms exact availability, mileage, and your price from live inventory - free commercial freight and the 12-month parts warranty included.
How it works
From quote to installed in five steps
No guesswork and no runaround. A dedicated rep handles sourcing, compatibility, shipping, and after-sale support from start to finish.
- 01
Request a Quote
Submit a quote through the website form or by phone. Tell us the year, make, model, and the part you need.
- 02
Sales Assistance
Based on your vehicle, a rep shares a quote for the most suitable engine or transmission, with compatibility confirmed.
- 03
Order & Shipment
Your rep updates you with the shipping time and tracking details, and ships within 5-7 business days - free to a commercial address or freight terminal.
- 04
Installation
Cross-check the part against the pre-installation checklist your rep provides for optimum performance.
- 05
After-Sale Support
Your rep assists with any issue or question before or after installation - plus lifetime support from ASE-certified experts.
Why buy from us
The inventory to find it, the standards to trust it
Buying a used engine or transmission online only works when the part is tested, the fit is confirmed, and someone stands behind it. We put all three out in the open.
Deep Nationwide Inventory
With a wide network of inventory yards, we can find nearly any make and model of engine or transmission - classics, limited editions, and in-demand variants included.
Affordable Pricing
The reason to buy used is to save. We make that possible with quality-tested used engines and transmissions at fair, honest prices.
12-Month Parts Warranty
Every part carries a 12-month parts-replacement warranty - approved claims are covered by replacement or store credit - plus lifetime support from ASE-certified experts. Upgrade to 3-year parts and labor coverage for $499.
Supportive Customer Service
Our team makes it their job to find you the best possible replacement - and to stay reachable before and after your order.
Free Commercial Delivery
Free freight to a commercial address or your local freight terminal in the lower 48, delivered in 5-7 business days. Residential delivery is $175 and includes a liftgate, a smaller truck and a scheduled appointment.
100% Quality Assurance
Every component is put through a rigorous testing and inspection process by automotive experts before it ships.
Buy with confidence
The checklist for buying a used engine or transmission
Ask any supplier these five questions before you order. With us, the answer is yes to every one.
- What is the mileage on the engine or transmission?
- Are you dealing with a reputable, established business?
- Is the part tested and inspected before it ships?
- Does it come with a return and replacement warranty?
- Is the part confirmed compatible with your exact vehicle?
What customers say
Rated 4.4/5 by drivers and shops
My shop couldn’t find a good 5.4 for my F150 locally. Took a chance on Car Part HQ - shipped it to San Diego faster than expected, wrapped nice, zero cracks or rust on the block. My tech said it was one of the cleanest pulls he’s seen. Three months in and still running strong.
Deacon Boggs
Ford F-150 5.4 · San Diego, CA
I work on cars and needed a decent 4.0L Jeep engine for a customer. These guys shipped it out quick, no sensor damage, good compression. Was a straight swap. Customer was happy, which means I’m happy. Will use again.
Isaac Hughes
Shop owner · Jeep 4.0L
Installed the transmission myself in my garage. It came in a legit steel cage, which was cool. Bolted right up to my ’06 F150 and shifted fine on the first test drive. Emailed Ryan with a question and he got back same day.
Brandon Marshall
DIY install · Ford F-150
Chris helped me pick the right 5.3 LS for my Tahoe and got it shipped to my shop in Colorado. Six days, faster than expected. Mechanic said it was a clean pull and install went smooth. Two weeks in - runs strong, no codes.
Roman
Chevy Tahoe 5.3 LS · Colorado
Ryan found me a clean 3.5 V6 for my Honda Pilot. Came wrapped up tight, ports sealed, no broken plugs. Mechanic said compression looked perfect. Already put 900 miles on it - no lights, no problems. One of the better parts-buying experiences I’ve had online.
Misael Emerson
Honda Pilot 3.5 V6
Got a rear differential for my Ram 2500 - not easy to find used in good shape. They had two, sent it to my local diesel shop, installed no problem. Quiet, no clunking. They even sent the warranty info in the crate. Real deal operation.
Verified Google Review
Ram 2500 · rear differential
Questions, answered
Everything to know before you order
Straight answers on pricing, testing, warranty, shipping, and what’s included. Still unsure? Call us at (830) 999-7278.
How much does a used engine or transmission cost?
Price depends on the year, make, model, mileage, and part - a 4-cylinder economy engine and a diesel truck engine are very different jobs. Use the part finder or call us for a free, no-obligation quote on your exact vehicle; every quote confirms availability and compatibility before you pay.
Are your used engines and transmissions tested?
Yes. Every used engine and transmission is compression- and oil-pressure tested and put through a rigorous inspection process by automotive experts before they ship.
What warranty comes with a part?
Every engine and transmission includes a 12-month parts-replacement warranty, plus lifetime support from ASE-certified experts. Approved claims are handled by replacement or store credit - we do not issue cash refunds. Labor is not covered on the standard warranty. You can upgrade to 3-year parts and labor coverage for $499 at the time of purchase. Full warranty details are provided with your order.
Can I get a longer warranty that covers labor?
Yes. The standard coverage is 12 months on parts. For $499 you can upgrade to a 3-year warranty that covers both parts and labor, purchased at the time of your order. Ask your specialist to add it when you confirm your part.
How long does shipping take, and what does it cost?
Shipping is free to a commercial business address or your local freight terminal and typically arrives in 5-7 business days. Residential delivery is $175 and includes a liftgate, a smaller delivery truck and a scheduled appointment. We ship to the lower 48 only.
What is the difference between a remanufactured and a rebuilt engine?
Remanufactured engines have all brand-new internal parts plus all aftermarket and OEM upgrades and updates, whereas rebuilt engines are reconditioned used engines that keep many used parts on them.
What components are included with a used engine?
The engine assembly includes the main internal parts - block, head, piston, camshaft, crankshaft - and other components. It does not include the AC compressor, starter, alternator, or power steering pump. Additional parts left on the engine block are included for your convenience but are not covered by warranty.
How do I place an order, and how can I pay?
Search your part on the website and place the order, or call us at (830) 999-7278. We accept all major credit cards - Visa, MasterCard, American Express, and Discover - as well as Zelle, ACH, and cashier’s checks or money orders by mail. Mailed payments take longer to clear; once received, we verify your order and ship per our delivery commitment.
Can I pick up my part in person?
No - we are an online business with no walk-in sales or local pickup. Our inventory ships from multiple supplier locations, and every order comes with free freight to a commercial address or your local freight terminal instead.
Where are you located?
Car Part Headquarters, LLC is based at 1811 S Laredo St, San Antonio, TX 78207, and ships from distribution centers nationwide for fast delivery anywhere in the country.
Ready when you are
Find the right engine or transmission - tested, warrantied, shipped free.
Tested, warranty-backed parts, a 12-month parts-replacement warranty, and free delivery to a commercial address in 5-7 business days. Get a quote in under a minute.