10003-5AA-A00 HONDA Engine Motor Block Civic

Review HONDA Engine Motor Long Block Unkown Miles 174 Hp for CIVIC 2018–2021

The Honda 10003-5AA-A00 engine motor block is a crucial component of the 2018-2021 Honda Civic 1.5L VTEC Turbo engine, producing an impressive output of 174 horsepower. This motor block, engineered with precision and innovation by Honda, is designed to provide exceptional durability, reliability, and performance.

The motor block is essentially the engine's foundation, housing the cylinders and crankshaft. In the case of the Honda 10003-5AA-A00, it employs a compact, lightweight design, which contributes to the overall efficiency of the engine. The block is made of an aluminum alloy, which not only reduces the engine's weight but also provides excellent heat dissipation properties.

The cylinder bores in the Honda 10003-5AA-A00 motor block are finished with a Thermal Sprayed Alumina (TSA) coating. This coating protects the engine from the destructive effects of detonation and helps maintain the integrity of the cylinder walls, contributing to a longer engine life.

One of the most innovative features of this motor block is its application of Honda's Variable Cylinder Management (VCM) technology. This technology allows the engine to run on just two cylinders under light loads, significantly reducing fuel consumption and emissions. When more power is required, the engine seamlessly switches back to using all four cylinders.

The Honda 10003-5AA-A00 motor block is also equipped with a cast-in iron cylinder liner. This liner provides excellent heat conductivity and helps maintain the engine's durability and performance. The block also features a high-pressure die-cast aluminum cylinder head, which provides excellent airflow and combustion efficiency.

Additionally, this motor block includes a cast-in oil pan and a water pump housing, which are integrated into the design for optimal performance and reduced weight. The block also has provisions for the engine's timing gears, timing chain, and camshaft.

Overall, the Honda 10003-5AA-A00 engine motor block is an impressive piece of engineering that combines durability, reliability, and performance in a compact, lightweight design. It is a testament to Honda's commitment to innovation and excellence in automotive engineering.

Buying a Honda 1.5L VTEC Turbo engine block from the 2018-2021 Civic model with a power output of 174 hp can be a viable option for those seeking a reliable and high-performing engine. Here are some pros and cons to help you make an informed decision.

1. Fuel Efficiency: The Honda 1.5L VTEC Turbo engine is known for its excellent fuel efficiency. It delivers impressive mileage for its power output, making it a cost-effective choice in the long run.

2. Power and Performance: The engine block delivers a decent amount of power and torque, making it suitable for both daily driving and occasional high-performance use.

3. Reliability: Honda engines have a reputation for being reliable and durable. This engine block is no exception, as it is designed to provide long-lasting performance.

4. Availability: The engine block is readily available in the market, making it easy to source and install.

1. Cost: While the engine block itself may not be overly expensive, the cost of installing it, including labor and any necessary modifications, can add up.

2. Complexity: The engine block is more complex than a standard naturally aspirated engine, which can make it more difficult to diagnose and repair any potential issues.

3. Turbocharger: The turbocharger can be prone to failure, which can result in costly repairs. However, proper maintenance can help mitigate this risk.

4. Size: The engine block is larger than a standard engine block, which can make it more difficult to install in certain applications.

The Honda 1.5L VTEC Turbo engine block is a solid choice for those seeking a reliable and high-performing engine. While it may come with some cons, the pros outweigh them. The engine's excellent fuel efficiency, power and performance, reliability, and availability make it a worthy investment. However, it is essential to consider the cost of installation, complexity, turbocharger potential failure, and size before making a purchase decision.

If you are in the market for a high-performing and reliable engine block, the Honda 1.5L VTEC Turbo engine block is an excellent option. However, it is crucial to ensure that you have the necessary resources, including the budget and expertise, to install and maintain the engine block properly. If you are unsure, it may be best to consult with a professional mechanic to help you make an informed decision.

Details:

2021 Honda Civic ex, touring, 1.5l l4 - gas, 2020 ex-l, LX, Si, sport, sport 2019 2018 gas. Part number s: 10003-5aa-a 10002-5aa-a04, 12310-6a0-a01, 11200-5k8-010 part/notes: long block engine / motor car fax 90k mi, fitment: short block - Honda 10002-5aa-a04 1.5l.civic.

specifications engineblocksam:

• for models: Civic
• for years: 2018–2021
• brand: Honda
• mpn: 10003-5aa-a00
• part type: Hp Engine Motor Block
• oem part number: 10003-5aa-a00, 10002-5aa-a04, 12310-6a0-a01, 11200-5k8-010
• item name: Long Block Engine / Motor Na Mi
• ipn: 300-80105
• genuine oem: Yes
• fitment type: Direct Replacement

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

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• options: ship-to-home
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• in stock #: 5
• prices: $599.00–$1540.14
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• started: december 9, 2025