“I was hesitant about a used engine, but it runs smoothly. Shipping was fast, and the warranty gave me confidence.”
Daniel Ruiz
Phoenix, AZ
2020 Buick Encore
Mon–Fri 8am–7pm · Ships to all 50 states
Used engine · Buick · Nationwide freight
A quality-tested used Buick engine restores your vehicle's performance and saves you thousands compared to dealership replacement. From the 2004–2007 Buick Rainier 4.2L and 5.3L V8 to the Enclave 3.6L, LaCrosse 3.6L V6, Park Avenue Supercharged, and every model in between — iBidAuto carries compression-tested, warranty-backed units ready to ship nationwide

Warranty in writing
3 months, written on the quote.
Checked before freight
Compression and oil condition are checked before a used long block is quoted.
Freight to 50 states
Crated to the shop or the driveway. Transit is on the quote.
A person who answers
Mon–Fri 8am–7pm. English and Spanish.
Models
Type a model name, or narrow by body type.
12 of 23
AllureSedan
Mid-size luxury sedan known for its smooth ride, refined interior, and reliable V6 performance — combining comfort and class in a sleek package.
3.8L V6, 3.6L V6, 5.3L V8 (Super trim)
CascadaConvertible
Stylish convertible offering open-air driving, refined comfort, and turbocharged performance — designed for a relaxed yet sporty experience.
1.6L Turbocharged I4
CenturySedan
Classic mid-size sedan offering a smooth ride, dependable V6 performance, and timeless comfort — a long-standing favorite in Buick’s lineup.
2.5L I4, 3.1L V6, 3.3L V6, 3.8L V6 (varies by generation)
ElectraSedan
Full-size luxury sedan celebrated for its smooth V8 power, elegant design, and plush interior — a classic symbol of Buick’s premium craftsmanship.
4.9L V8, 6.6L V8, 7.5L V8, 3.8L V6 (later models)
EnclaveSUV
Premium mid-size SUV offering refined comfort, advanced technology, and smooth V6 performance — perfect for families seeking luxury and space.
3.6L V6
EncoreSUV
Compact luxury SUV combining agile handling, upscale features, and efficient turbocharged performance — ideal for city driving with premium comfort.
1.4L Turbo I4
Encore GXSUV
Stylish subcompact SUV offering refined design, advanced safety tech, and turbocharged efficiency — delivering big comfort in a smaller package.
1.2L Turbo I3, 1.3L Turbo I3
EnvisionSUV
Refined compact luxury SUV featuring modern styling, advanced driver-assist tech, and smooth turbocharged performance for an upscale driving experience.
2.5L I4, 2.0L Turbo I4
EnvistaSUV
Sleek compact crossover blending coupe-inspired design, advanced connectivity, and turbocharged efficiency — offering modern luxury at an affordable entry point.
1.2L Turbo I3
LaCrosseElegant full-size sedan offering a quiet ride, refined comfort, and smooth V6 or hybrid performance — showcasing Buick’s modern luxury craftsmanship.
2.4L I4 Hybrid (eAssist), 3.0L V6, 3.6L V6
LeSabreSedan
Full-size sedan known for its comfort, smooth V6 power, and long-standing reputation for reliability — a true Buick classic for effortless cruising.
3.8L V6, 4.9L V8 (early models), 5.7L V8 (classic generations)
LucerneSedan
Full-size luxury sedan offering a smooth, quiet ride with refined V6 or V8 performance — blending traditional Buick comfort with modern sophistication.
3.8L V6, 4.6L Northstar V8
Choose the model you're looking for.
A high-grade used engine is often the smart choice for Buick owners who want reliability without overspending. When your Buick starts losing power, rattling under load, or struggling with persistent engine warnings, it can feel like the car you trusted is slipping away. Instead of scrapping your vehicle or investing in an overpriced factory engine.
Fully Inspected and Verified
Every Buick engine goes through a complete evaluation process. The engine is inspected for structural integrity, oil quality, mileage confirmation, gasket condition, and operational behaviour. Only engines that pass strict quality checks move ahead.
Critical Components Assessed
Key parts such as pistons, cylinder walls, crankshaft, timing components, valve assembly, and lubrication channels are inspected carefully. Any engine showing early signs of wear is rejected outright.
Compression & Performance Testing
Before listing, each engine undergoes compression testing and operational checks to ensure smooth firing, balanced cylinder performance, and dependable power output.
Fitment Precision
Provide your VIN, and you get the exact engine your Buick requires. No confusion. No mismatches. No wasted time during installation.
Used engines deliver strong value for Buick owners. Compared to a new factory engine, a used motor can cost significantly less while still offering excellent performance. Unlike basic rebuilt engines, which only replace limited parts, a tested used engine gives you original factory integrity with proven durability.
Supported Buick Models & Engines
You’ll find engines for popular Buick models such as Enclave, Encore, Encore GX, Envision, Regal, LaCrosse, Lucerne, Verano, Rendezvous, Rainier, Park Avenue, Century, LeSabre, Riviera, Roadmaster and more.
Warranty & Peace of Mind
Each used Buick engine includes warranty protection, with coverage depending on the engine’s grade and condition. All engines come with documented testing results, inspection notes, and detailed compatibility confirmation.
Cost Efficiency & Value
A used Buick engine can help you save up to 50 percent compared to buying a new OEM motor.
Shipping, Support & Installation
Engines are packaged, secured on pallets, and dispatched through trusted carriers. Installation support is available if needed.
Recommended if your Buick shows symptoms such as knocking, low oil pressure, overheating, gasket leaks, high oil consumption, misfires, or engine seizure.
Common reasons include:
Replacing the engine is often cheaper than repeated repairs, and a quality used engine ensures peace of mind.
When you have a Buick's failed engine, replacing the entire vehicle isn’t the most cost-effective choice. A quality used Buick engine delivers reliable performance at a fraction of the cost of a new engine. Unlike junkyard parts, our used engines are inspected, compression-tested, and certified for durability.
Whether you drive a Buick Encore, Enclave, Regal, LaCrosse, Verano, or Century, a used engine lets you restore performance and extend the life of your vehicle without breaking the bank.
A properly sourced used Buick engine is not a gamble. Each engine is carefully inspected, cleaned, and tested to ensure it meets quality and reliability standards. Vital components are examined for wear, compression levels, and overall performance before approval. Every used Buick engine is restored to peak condition, providing a cost-effective alternative to buying new.
Key components checked or refurbished include:
Feature | Used Buick Engine | New Engine | Rebuilt Engine |
Testing | Compression & leak tested | Fully tested | Limited testing |
Warranty | 30–180 days | 5+ years | 90 days–6 months |
Price | 40–60% lower | High | Moderate |
Lifespan | Like-new for years | Brand-new | Varies |
Fitment | VIN-matched | OEM | Partial match |
Buick used engines from us are available with a warranty coverage ranging from 30 days to 6 months, the tenure depends on the usage and the model of the car. Both personal vehicles and commercial fleets are supported.
The engines that we provide here Buick vehicles manufactured from 2005–2024, including:
VIN provided ensures an accurate engine match
A used Buick engine typically costs 40–60% less than a brand-new OEM engine. Labor and installation costs are reduced due to correct fitment.
Average pricing by model:
Buick Encore 1.4L: $1,800–$2,500
Buick Regal 2.0L: $2,200–$3,000
Buick Enclave 3.6L: $3,000–$4,500
Buick LaCrosse 3.0L: $2,700–$3,800
Buick Verano 2.4L: $2,400–$3,200
Choosing a used engine saves long-term costs and avoids the need for vehicle replacement.
All engines are shipped securely, palletized, and freight-ready. Liftgate service is available for residential or commercial deliveries. Typical delivery time is 3–7 business days, depending on your location.
We can recommend authorized installers and mechanics in your area, and instructions for warranty validation with your installer are provided with every engine.
Blockquote Section
"A used Buick engine is a smart investment. It restores your vehicle’s performance reliably without the cost of a brand-new engine."
There are a few signs that it might be time to get a new one:
In a lot of cases, getting a new engine is a lot cheaper than getting repairs done over and over. A used Buick engine that is in good condition will give you peace of mind, reliability, and better performance.
Picking a used engine is also good for the environment. Reusing engines lowers the amount of pollution that comes from making new ones, cuts down on metal waste, and makes your car last longer, all while giving you a reliable solution at a lower cost.
From the shop
Taking care of a Buick engine after replacing it
Change the oil after 500 to 1000 miles.
Use oil and filters that the OEM recommends
Keep an eye on the oil and coolant levels. Don't drive too hard during the break-in period.
Follow the rules for warranty service
Taking care of your used Buick engine will make it last longer than you think.
Types of Buick Engines We Support
1.4L Turbo I4
1.5L L4
2.0L Turbo I4 3.0L V6 3.6L V6
2.4L I4 and V8 engines (4.6L and 5.3L)
Do you not know your engine code? Give your VIN for quick verification.
Reviews
Mileage, warranty, and freight are on the quote. These notes are from people who ordered a used engine.
“I was hesitant about a used engine, but it runs smoothly. Shipping was fast, and the warranty gave me confidence.”
Daniel Ruiz
Phoenix, AZ
2020 Buick Encore
“Mechanic was impressed. Engine was ready to install and tested. Zero issues post-installation”
Brenda Collins
Charlotte, NC
2018 Buick Enclave
“Dealership quoted double. This engine came tested, certified, and warranty-backed. Works flawlessly.”
Michael Larson
Denver, CO
2017 Buick Regal
“Compression is tight and performance like new. Best decision after my engine failed.”
Chris Dempsey
Tampa, FL
2019 Buick LaCrosse
“Support confirmed fitment using VIN. Engine arrived ready to install. Highly recommend.”
Alicia Morgan
Seattle, WA
2021 Buick Verano
“Great alternative to a new engine. Clean, tested, and backed by warranty. No regrets.”
Samuel Greene
Dallas, TX
2016 Buick Century
Searches
Each one opens this page with that vehicle ready for a quote.
Questions
Yes. Before shipping, each engine is checked, tested for compression, and confirmed to work properly.
Yes. Depending on the model, the warranty lasts from 30 days to 6 months.
Give us your VIN or the details of your car (model, year, engine size) to make sure we get the right part.
We check the core parts, like the block, heads, pistons, bearings and gaskets. You might need to use some parts from your old engine again.
Yes, all engines can be shipped anywhere in the U.S. There are options for homes and businesses, and liftgate service is available.
Yes. Putting in a new engine is the same as putting in a used Buick engine, which is why certified mechanics will take them.
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Used turbocharger
Shop used Buick turbochargers that are fully tested and inspected. OEM units with warranty, VIN-verified fitment, and fast nationwide shipping across the U.S.

Used axle assembly
Shop used Buick axle assemblies that are fully tested and inspected. Warranty-backed units with fast nationwide shipping and guaranteed fitment.

Used drive shaft
Shop used Buick drive shafts that are fully tested, inspected, and balanced. Warranty-backed units with fast nationwide shipping and guaranteed fitment.
A reman unit is a full rebuild — not a used takeout. Internals are inspected and replaced as needed, then tested before it ships.
ShopShift issues, no-move, or a burned converter — a tested used transmission is often the fastest way back on the road.
ShopShaft play, oil in the intake, or a dead actuator — we stock used and reman turbos for the engines we already sell.
ShopCall or request a quote to secure a certified used Buick engine shipped to your mechanic fast.
3 months
Used parts include 3 months, written on the quote.
Matched
Year, make, model, and the engine notes that change the part. A wrong application does not ship.
Mon–Fri
(973) 917-3042 in English,
(973) 567-7055 in Spanish.