Skip to content

Mon–Fri 8am–7pm · Ships to all 50 states

Used engine · Buick · Nationwide freight

Premium Used Buick Engines — Tested, Warranty-Backed & VIN-Matched

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

EngineBuick Logo
  • 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

Find a Buick model

Type a model name, or narrow by body type.

12 of 23

Choose the model you're looking for.

A quality-tested used Buick engine gives your car a second life, restores performance, and saves you a massive amount of money in the process.

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.


What Makes Our Used Buick Engines Stand Out

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.


Why Choose a Used Engine Over New or Rebuilt

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.


When to Consider a Replacement Engine

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:

  • Engine knocking or rod failure
  • Oil contamination or sludge buildup
  • Overheating & head gasket failure
  • Excessive oil burning or smoke
  • Timing chain or belt failure
  • Loss of compression
  • Bearing wear
  • Complete engine shutdown

Replacing the engine is often cheaper than repeated repairs, and a quality used engine ensures peace of mind.


Engines of Buick Which You Can Trust

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.

What Makes a Used Buick Engine Different?

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:

  • Pistons & rings
  • Crankshaft
  • Camshaft
  • Cylinder heads
  • Bearings
  • Gaskets & seals
  • Timing components
  • Oil pump
  • Valvetrain components


Why Choose a Used Engine Over New or Rebuilt?


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


Warranty & Certification You Can Rely On

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.


Certifications and inspections might also include:


  • Compression and leak testing
  • Verified mileage documentation
  • OEM component verification
  • You’ll receive documentation confirming the engine’s testing and warranty coverage.


Fitment for All Buick Models

The engines that we provide here Buick vehicles manufactured from 2005–2024, including:

  • Buick Encore
  • Buick Enclave
  • Buick Regal
  • Buick LaCrosse
  • Buick Verano
  • Buick Century
  • Buick Lucerne
  • Buick Park Avenue
  • Buick Cascada

 VIN provided ensures an accurate engine match


Cost Benefits:


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.


Help with shipping and installation

Shipping & Installation Support

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."

When is it time to get a new engine for your Buick?

There are a few signs that it might be time to get a new one:


  •  Engine knocking or rod problems that won't go away
  •  Oil contamination or sludge buildup
  •  Too much heat or problems with the head gasket that keep coming back
  •  Too much oil use or smoke that can be seen
  •  Broken timing chain or belt
  •  Low compression
  •  Wear on the bearing
  •  Complete engine failure

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.


Good for the environment and long-lasting

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

Notes that sit next to the quote

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.


By make

Shop used engine by make

Choose the brand you're looking for.

Reviews

What shops and owners say

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

Popular used engine searches

Each one opens this page with that vehicle ready for a quote.

Questions

Common questions

Are Buick engines that have been used reliable?+

Yes. Before shipping, each engine is checked, tested for compression, and confirmed to work properly.

Is there a warranty on these engines?+

Yes. Depending on the model, the warranty lasts from 30 days to 6 months.

How can I be sure that the engine will work?+

Give us your VIN or the details of your car (model, year, engine size) to make sure we get the right part.

What comes with a used engine?+

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.

Is shipping available all over the country?+

Yes, all engines can be shipped anywhere in the U.S. There are options for homes and businesses, and liftgate service is available.

Can mechanics put in used engines?+

Yes. Putting in a new engine is the same as putting in a used Buick engine, which is why certified mechanics will take them.

Helpful Guides

Read our latest articles about used cars, auto parts, and more.

Remanufactured Engine

Car Maintenance & Repair · Sep 22, 2025

Remanufactured Engines Explained: Costs, Benefits & Buying Guide

Discover everything about remanufactured engines—from costs and key benefits to expert buying tips. Learn how they differ from rebuilt engines and find the best value for your vehicle.

Read the guide
All guides

Get a Tested Used Buick Engine with Warranty Today

Call or request a quote to secure a certified used Buick engine shipped to your mechanic fast.

  1. 3 months

    Warranty term

    Used parts include 3 months, written on the quote.

  2. Matched

    Fitment

    Year, make, model, and the engine notes that change the part. A wrong application does not ship.

  3. Mon–Fri

    Hours

    (973) 917-3042 in English,
    (973) 567-7055 in Spanish.