fits model: Wrx, Sti, Std. make: Subaru. year: 2004.

( Brand: Manley Performance ), ( Manufacturer Part Number: 612105C-4 )
The 612105c-4 Manley 04 Subaru WRX STI EJ257 std 100mm 5mm 9.8 dish Piston is a high-performance upgrade for your Subaru engine. This piston is designed specifically for the EJ257 engine found in Subaru WRX STI models, and it provides significant improvements in power and reliability.
The 100mm bore diameter of this piston is larger than the original piston, allowing for more combustion space and thus more power. The 5mm compression height is also an upgrade, providing a higher compression ratio that improves efficiency and power output. The piston dish is 9.8mm, which helps to reduce noise and vibration, and it is designed to work with a 9.8mm ring gap.
This Manley piston is made from forged 2618 alloy, which is a high-strength aluminum alloy that is commonly used in high-performance applications. The forging process ensures that the piston is strong and durable, with no defects or weaknesses. The piston skirt is also designed with a full-floating pin, which reduces friction and wear, and it features a carbon-coated skirt for even further reduction in friction.
The piston rings included with this kit are made from high-quality material, including a 1.0mm top ring, a 1.5mm second ring, and a 2.0mm oil control ring. The rings are designed to provide a tight seal and prevent oil leakage, while also reducing wear and tear on the cylinder walls.
Overall, the 612105c-4 Manley 04 Subaru WRX STI EJ257 std 100mm 5mm 9.8 dish Piston is a high-performance upgrade that will provide significant power gains and improved reliability for your Subaru engine. It is made from high-quality materials and includes a complete set of piston rings, making it a convenient and reliable upgrade option for your Subaru WRX STI.
Pros of buying a Manley 612105C-4 Performance Intake for Subaru WRX STI EJ257:1. Enhanced Engine Performance: The Manley intake system is designed to improve airflow into the engine, which can lead to increased horsepower and torque.
2. Durable Construction: Manley uses high-quality materials in their intake systems, ensuring they can withstand the harsh conditions of high-performance driving.
3. Improved Throttle Response: The increased airflow can lead to improved throttle response, making your car feel more responsive and agile.
4. Easy Installation: The Manley intake system is designed to be easy to install, making it a good option for DIY enthusiasts.
Cons of buying a Manley 612105C-4 Performance Intake for Subaru WRX STI EJ257:1. Cost: The Manley intake system is a premium product and can be quite expensive compared to other intake systems on the market.
2. Potential Noise: Some users have reported that the Manley intake system can be louder than stock, which may not be desirable for those looking for a quieter driving experience.
3. Requires Tuning: To get the most out of the Manley intake system, it may require additional tuning, which can add to the overall cost.
Conclusion:The Manley 612105C-4 Performance Intake for Subaru WRX STI EJ257 is a high-quality intake system that can provide significant improvements in engine performance. However, it comes with a premium price tag and may require additional tuning to get the most out of it. If you're willing to invest in a top-of-the-line intake system and are looking for improved throttle response and increased horsepower, the Manley intake system could be a good fit for you.
Recommendation:If you're looking for a high-performance intake system for your Subaru WRX STI EJ257, the Manley 612105C-4 Performance Intake is a solid option to consider. However, make sure to do your research and understand the potential costs involved, including installation and tuning. If you're on a tighter budget, there may be other intake systems available that can provide similar performance improvements at a lower cost.
All final turning is performed in one texturing resulting complete squareness of rings to the cylinder wall.
8:1 dish pis Manley pistons are machined of high strength 2618 material. Perfect ring groove to skirt squareness is achieved through our unique one texturing manufacturing method that assures maximum horsepower.
Proprietary multi-step top ring groove machining process assures optimum control of the grooves size, geometry, flatness, and finish. Attributes contour forgings provide the optimum balance between strength and weight with no grain-interrupting internal milling. 5mm bore 9.
Forging alloy for maximum high temperature strength and fatigue resistance edgily rd. Each design is lightweight yet robust enough to deliver long service life. Value - added features such as a pressure balance groove included in all series.
Levitt own, pa Manley 04 for Subaru Wrx Sti EJ257 Std stroke 100mm. Federal form-scan gauging validates ideal skirt indexing to pinhole and skirt-to-skirt polarity precise machining results in an exact compression distance as well lock ring groove spacing, size, concentrate.