7-558-321 BMW Engine Block 525I

Review BMW 558 321 N52 Engine Bare Block From 3.0 L6 421 for 525I 2007

The BMW 558 321 N52 engine bare block, manufactured in 2007 for the 525i model, is a testament to BMW's engineering excellence and performance-oriented design. This L6, inline-6 cylinder engine block is a key component of the renowned N52 engine family, known for their smooth operation, power, and fuel efficiency.

The BMW 558 321 N52 engine bare block is a cast-iron piece, robustly constructed to withstand the rigors of high-performance driving. It features a closed-deck design, which enhances rigidity and reduces oil consumption, contributing to the engine's long-term durability and reliability. The engine block is equipped with an aluminum cylinder head, which is lightweight yet strong, and is designed to improve thermal efficiency and reduce emissions.

The N52 engine's bore and stroke dimensions are 89.6mm x 90.0mm, resulting in a displacement of 2993cc (2.99L). This engine configuration delivers a balanced power output, providing a satisfying drive experience with great responsiveness and smooth torque delivery. The 558 321 engine block is compatible with the BMW's Valvetronic system, which allows for continuous and variable valve timing, providing optimal power and fuel efficiency across the engine's rev range.

The BMW 558 321 N52 engine bare block is a high-quality, factory-produced component, ensuring a precise fit and excellent performance when paired with other components, such as the cylinder head, crankshaft, and pistons. This engine block is a perfect choice for engine builders, enthusiasts, and mechanics looking to rebuild, upgrade, or restore their BMW 525i engine. Whether you're aiming for improved performance, enhanced reliability, or increased fuel efficiency, the BMW 558 321 N52 engine bare block is an excellent foundation for your custom engine build.

1. Cost-effective: Buying a bare block can be more affordable than purchasing a fully assembled engine, as the cost of the engine components is separated.

2. Customization: A bare block allows you to customize the engine to your specifications, such as upgrading the performance parts or modifying the engine for different fuel types.

3. Quality control: By purchasing a bare block, you can ensure that each individual component is in good condition and meet your specific requirements.

1. Time-consuming: Assembling an engine from a bare block can be a lengthy and complex process, requiring specialized tools and technical expertise.

2. Risk of damage: If not handled properly, the engine components can be damaged during the assembly process, leading to additional costs and delays.

3. Potential for misalignment: When assembling the engine, it is crucial to ensure that all the components are aligned correctly to avoid mechanical issues in the future.

Buying a BMW 550i (N52 engine, 2007 model, 525i, L6 4.2L) bare block can be a cost-effective and customizable option, but it requires technical expertise and time for assembly. The risk of damage and misalignment during the assembly process should be considered. If you have the necessary skills and resources, purchasing a bare block can be a worthwhile investment. However, if you are not confident in your abilities or do not have the time to assemble the engine, it might be more practical to purchase a pre-assembled engine.

Details:

For sale is an used oem part original equipment manufacturer that came stock with your car, it not aftermarket. Unless stated otherwise it may be a little dusty from storage use.

specifications engineblocksam:

• for models: 525i
• for years: 2007
• brand: Bmw
• mpn: 7-558-321
• type: Engine Block

shipping engineblocksam:

• carrier: usps
• service: usps ground advantage
• transit: 6-11 days
• type: fixed
• class: standard

general engineblocksam:

• category: Auto Parts > Car Truck Accessories > Engines > Blocks

payments engineblocksam:

• wallet: apple-pay
• cash
• credit card: american-express

offer engineblocksam:

• best offers: true
• in stock #: 3
• options: ship-to-home
• sold #: 32
• started: june 6, 2024
• prices: $279.99–$550.00
• item condition: Used
• availability: in stock

seller engineblocksam:

• city: rancho cordova, california
• # reviews: 1070
• rating: 95.0%

returns engineblocksam:

• paid by: buyer
• time: 30 days
• policy: returns accepted