SUBARU 10103AC880 Engine Block

( Manufacturer Part Number: 10103AC880 ), ( Oe Spec Or Performance/custom: Oe Spec ), ( Certifications: Oe ), ( Fuel Type: Gasoline ), ( Engine Size: 2.5 L ), ( Block Type: Flat ), ( Number Of Valves: 16 ), ( Notes: Ej255 2.5l-h4 Dohc Turbocharged ), ( Performance Part: No ), ( Returns Accepted: Returns Accepted ), ( Fitment Type: Direct Replacement ), ( California Prop 65 Warning: May Cause Cancer And Reproductive Harm. See Www.p65warnings.ca.gov For More Info. ), ( Type: Engine Short Block ), ( Year: 2006 2007 2008 2009 2010 2011 2012 2013 2014 ), ( Country/region Of Manufacture: Japan )

Review SUBARU Engine Short Block fits FORESTER LEGACY EJ255 WRX GT 2006–2014

Introducing the Subaru 10103AC880 engine block, specifically designed for Subaru EJ255 engines used in various models from 2006 to 2014, including the WRX and Forester GT. This engine block is a crucial component of your Subaru's powertrain, responsible for housing the cylinders and pistons, as well as providing a strong foundation for the crankshaft and connecting rods.

The Subaru 10103AC880 engine block is made from high-strength cast aluminum alloy. This material offers several advantages, such as reduced weight compared to traditional cast iron engine blocks, improved cooling efficiency, and enhanced durability. The aluminum alloy also boasts excellent resistance to corrosion, ensuring that your engine block remains in excellent condition even in harsh environments.

One of the most notable features of this engine block is its advanced design, which includes various modifications to enhance the performance and reliability of the EJ255 engine. For instance, the block incorporates a thicker cylinder wall, as well as an increased bore size, to accommodate higher compression ratios and increased power output. Additionally, the block boasts improved cooling passages, which help to dissipate heat more efficiently, ensuring consistent engine performance under heavy loads.

Another essential aspect of the Subaru 10103AC880 engine block is its precision machining. The block undergoes stringent machining processes to ensure that all surfaces are perfectly flat and parallel, ensuring optimal engine assembly and long-term durability. The block also features precision-drilled oil passages, which allow for accurate and consistent oil flow, ensuring that all engine components receive the lubrication they need to function optimally.

In summary, the Subaru 10103AC880 engine block is a high-performance, high-strength component designed specifically for the EJ255 engines used in Subaru WRX and Forester GT models between 2006 and 2014. Made from high-strength cast aluminum alloy and featuring advanced design modifications and precision machining, this engine block delivers enhanced power output, improved cooling efficiency, and increased durability, ensuring that your Subaru continues to perform at its best.

The Subaru EJ255 engine, specifically the 2006-2014 version found in the WRX and Forester GT models, is known for its balance of power, reliability, and Subaru's famous symmetrical all-wheel-drive system. However, like any engine, it comes with its own set of pros and cons.

1. Power: The EJ255 engine produces a decent amount of power, with output ranging from 224 horsepower in the base WRX to 300 horsepower in the STI version.

2. Reliability: Subaru engines are renowned for their longevity, and the EJ255 is no exception. Many owners report over 200,000 miles on their engines with minimal issues.

3. All-wheel-drive: Subaru's symmetrical all-wheel-drive system is a significant advantage, especially for those living in regions with harsh winters or those who enjoy driving in adverse conditions.

4. Fuel efficiency: For a high-performance engine, the EJ255 is relatively fuel-efficient, with an estimated 21-25 mpg combined for the WRX.

5. Aftermarket support: The EJ255 engine has a large and active aftermarket community, making it easy to find performance parts, tuning options, and maintenance resources.

1. Maintenance: Subaru engines require regular maintenance, including frequent oil changes and timing belt replacements. Neglecting these tasks can lead to costly repairs.

2. Turbo lag: The EJ255 engine can suffer from turbo lag, which can make the engine feel less responsive at lower RPMs.

3. Subpar interior: Some critics argue that the interiors of the WRX and Forester GT models during this era lacked the refinement and quality of competitors.

4. Age: The EJ255 engine is now over a decade old, meaning that parts may become harder to find or more expensive as production ends.

The Subaru EJ255 engine, particularly the 2006-2014 variant, offers a compelling balance of power, reliability, and all-wheel-drive capabilities. While it comes with some drawbacks, such as the need for regular maintenance and potential turbo lag, its advantages far outweigh the cons for those seeking a capable and durable daily driver or weekend warrior.

If you're in the market for a used Subaru WRX or Forester GT with the EJ255 engine, it's essential to have a trusted mechanic inspect the vehicle thoroughly. Ensure that the maintenance history is up to date, and consider investing in a comprehensive extended warranty to mitigate potential risks. With proper care and attention, the EJ255 engine can provide you with years of enjoyable driving.

Details:

Fully rebuilt EJ255 w/new internals pistons, rings, king racing bearings, and rods, The 2006 - 2014 Subaru Engine Short Block is a direct replacement for Subaru's featuring 2.5L 4-cylinder engine size with 16 valves flat block type. This OE Spec engine is suitable for various Subaru model's such as Forester XT, Impress WRX, GT, Legacy, and Outback, designed gasoline fuel type.

part #: 10103ac880 prices

• $1120.00-$2573.29

specifications grokengines:

• for models: Ej255, Wrx, Gt, Forester, Legacy
• for makes: Subaru
• for years: 2006-2014
• mpn: 10103ac880
• oe spec or performance/custom: Oe Spec
• certifications: Oe
• fuel type: Gasoline
• engine size: 2.5 L
• block type: Flat
• number of valves: 16
• notes: Ej255 2.5l-h4 Dohc Turbocharged
• performance part: No
• returns accepted: Returns Accepted
• fitment type: Direct Replacement
• california prop 65 warning: May Cause Cancer And Reproductive Harm. See Www.p65warnings.ca.gov For More Info.
• type: Engine Short Block
• year: 2006 2007 2008 2009 2010 2011 2012 2013 2014
• country/region of manufacture: Japan

payments grokengines:

• wallet: Google-pay
• other
• credit card: Visa

shipping grokengines:

general grokengines:

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

seller grokengines:

• # reviews: 94
• city: Las Vegas, Nevada
• rating: 100.0%

returns grokengines:

• policy: No Returns

offer grokengines:

• started: July 6, 2025
• quantity: 1
• options: Ship-to-home
• availability: In Stock
• sold: 0

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