BUICK 12624255 Engine 300-04039 3.9L 8TH LZ9 1351927

( Manufacturer Part Number: 12624255 ), ( Part Type: Engine ), ( Genuine Oem: Yes ), ( Ipn: 300-04039 ), ( Manufacturer Warranty: 6 Month ), ( Partout Id: A-85976694 )

Review BUICK Engine 3.9l Vin 8th Digit Opt Lz9 Fits fits LUCERNE 2009–2010

Introducing the Buick LZ9 3.9L 8-cylinder OptiMax engine, a powerful and efficient powertrain option for select Buick models from the 2009-2010 Lucerne series. This engine is a marvel of modern automotive engineering, boasting an impressive displacement of 3.9 liters and delivering an optimal balance of performance and fuel efficiency.

At its core, the LZ9 engine is designed with a SOHC (Single Overhead Camshaft) cylinder head architecture, which allows for a more compact and streamlined design while still maintaining excellent power output. The engine also benefits from advanced technology such as variable valve timing, which optimizes engine performance across the entire RPM range, providing responsive power and exceptional fuel economy.

The LZ9 engine's cylinder block is made of cast iron, ensuring durability and longevity. The engine's pistons are forged aluminum, providing both strength and low weight, while the connecting rods are made of high-strength steel, ensuring a robust power delivery. The engine's crankshaft is also made of high-strength forged steel and features a counterweight design for improved balance and smoothness.

The LZ9 engine's intake system features a large, mass-flow air filter, which ensures a steady supply of clean air to the engine, while the exhaust system includes a high-flow catalytic converter and muffler, helping to reduce emissions and deliver quiet operation.

The LZ9 engine is also equipped with an advanced electronic fuel injection system, which delivers precise and efficient fuel delivery to the engine, ensuring optimal combustion and excellent fuel economy. The engine also features a maintenance-free ignition system, eliminating the need for regular spark plug replacements.

In terms of performance, the LZ9 engine produces an impressive 240 horsepower at 6,500 RPM and 242 lb-ft of torque at 3,400 RPM. These figures translate to responsive and powerful acceleration, making the engine a joy to drive.

In summary, the Buick LZ9 3.9L 8-cylinder OptiMax engine is a sophisticated and powerful powertrain option for select Buick models from the 2009-2010 Lucerne series. With its advanced technology, durable construction, and excellent performance, this engine is sure to provide drivers with a satisfying and efficient driving experience.

Buying the Buick 3.9L LZ9 engine (2009-2010 Lucerne, 8th generation Optima) comes with several pros and cons that potential buyers should consider before making a decision.

1. Powerful Engine: This engine delivers a robust performance with 242 horsepower and 252 lb-ft of torque, making it an excellent choice for those seeking adequate power.

2. Reliability: The LZ9 engine is known for its durability and reliability, which is a significant advantage for long-term ownership.

3. Smooth Operation: This engine offers a smooth and quiet operation, providing a comfortable driving experience.

4. Fuel Efficiency: Compared to other V8 engines in its class, the LZ9 engine offers decent fuel economy, making it a more cost-effective choice.

5. Availability of Parts: The LZ9 engine is widely available, making it easier to find replacement parts and perform maintenance.

1. High Consumption: This engine has a higher fuel consumption rate than some of its competitors, which can lead to increased operating costs.

2. Size and Weight: The LZ9 engine is larger and heavier than some of its counterparts, which can impact fuel efficiency and overall vehicle performance.

3. Cost: The cost of purchasing a used LZ9 engine or a used vehicle with this engine can be higher than other options, due to its power and performance capabilities.

The Buick 3.9L LZ9 engine offers impressive power, reliability, and smooth operation, making it an attractive choice for those seeking a robust driving experience. However, its higher fuel consumption rate, size, and weight, and cost may be drawbacks for some buyers. Ultimately, the decision to buy this engine depends on individual priorities, preferences, and budget.

If you prioritize power, reliability, and a smooth driving experience, the Buick 3.9L LZ9 engine could be an excellent choice. However, if fuel efficiency and cost are your primary concerns, you may want to consider alternative engine options. It's essential to weigh the pros and cons carefully and consider your specific needs and preferences before making a decision.

Details:

A free return label will not be provided for remorse reasons. Ex: pictures, receipts, videos, etc. All body parts are sold as is. Items are shipped after being paid in full.

Warranty All parts come with our standard 6-month warranty. All purchase prices are final.

part #: 12624255 prices

• $649.99-$836.39

specifications grokengines:

• for models: Lucerne
• for makes: Buick
• for years: 2009-2010
• mpn: 12624255
• part type: Engine
• genuine oem: Yes
• ipn: 300-04039
• manufacturer warranty: 6 Month
• partout id: A-85976694

payments grokengines:

• credit card: Mastercard
• wallet: Paypal
• other

seller grokengines:

• rating: 98.3%
• # reviews: 37738
• city: Seymour, Connecticut

returns grokengines:

• paid by: Buyer
• time: 30 Days
• policy: Returns Accepted

general grokengines:

• condition: Used
• Car Truck Parts Accessories > Engines Engine Parts > Engines

offer grokengines:

• sold: 0
• started: August 11, 2025
• quantity: 1
• options: Ship-to-home
• best offers: True
• availability: In Stock

shipping grokengines:

• service: Flat Rate Freight
• class: Freight
• transit: 11-16 Days
• type: Fixed
• cost: $375.00

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