SRP PISTONS 149225 Engine Bearings

( Brand: Srp Pistons ), ( Manufacturer Part Number: 149225 ), ( Type: Auto )

Review SRP PISTONS

SRP (Shelby RPM) pistons, part number 149225, are high-performance pistons designed for use in Ford Modular engines. These pistons are engineered to deliver increased power and torque, making them an excellent choice for high-performance applications.

The pistons are forged from 2618-T6 aluminum alloy, ensuring superior strength and durability. The crowns of the pistons are machined with a dish shape and a compression height of 3.040 inches, providing optimal combustion efficiency and power output. The piston skirts are designed with a full-length oil squirter ring, which ensures adequate lubrication and reduces friction between the piston and cylinder wall.

The piston rings are made from a high-performance ring set, including a top compression ring, a second compression ring, and an oil control ring. The top compression ring is made from a chrome molybdenum alloy, providing excellent sealing and durability, while the second compression ring is made from a low-tension alloy, reducing the likelihood of detonation and engine knock. The oil control ring is designed with a unique groove pattern, which helps to control oil consumption and prevent blowby.

The piston pins are made from 4340 chromoly steel and are shot-peened for added strength. The piston pin bore is chrome-plated to prevent wear and ensure a snug fit in the connecting rod. The pistons also feature a piston pin retainer, which helps to prevent piston pin movement during engine operation.

The piston design includes a balanced shape, which helps to reduce vibration and engine harmonics. The pistons are also designed with a narrow piston-to-wall clearance, which helps to improve engine efficiency and power output.

In summary, SRP pistons, part number 149225, are high-performance pistons designed for use in Ford Modular engines. They are forged from 2618-T6 aluminum alloy, feature a full-length oil squirter ring, and include a high-performance ring set with chrome molybdenum top compression ring and low-tension second compression ring. The pistons also include a balanced shape, narrow piston-to-wall clearance, and are designed for durability and improved engine performance.

SRP (Subaru Racing Parts) pistons, specifically model number 149225, are aftermarket performance pistons designed for Subaru engines. These pistons offer several potential benefits and drawbacks for those considering an upgrade.

1. Enhanced Performance: SRP pistons are designed to handle increased power and pressure, making them a popular choice for Subaru owners looking to modify their engines for more power.

2. Durability: These pistons are made from high-quality materials, such as forged aluminum, which can withstand the rigors of high-performance driving and racing.

3. Improved Thermal Properties: The pistons have enhanced thermal properties, allowing for better heat dissipation and reduced engine temperatures.

1. Cost: SRP pistons are more expensive than OEM (original equipment manufacturer) pistons. The added cost may be a deterrent for some Subaru owners.

2. Installation Complexity: Installing aftermarket pistons can be a complex process, requiring specialized tools and expertise.

3. Potential Engine Compatibility Issues: Depending on the specific Subaru engine and modifications, there may be compatibility issues with SRP pistons that could require additional work or components.

SRP pistons, model number 149225, offer improved performance, enhanced durability, and better thermal properties compared to OEM pistons. However, these benefits come with a higher cost, installation complexity, and potential engine compatibility issues.

For Subaru owners who are serious about performance upgrades and are willing to invest in high-quality components, SRP pistons could be an excellent choice. However, it's crucial to carefully consider the engine compatibility, installation requirements, and cost-benefit analysis before making a purchase. If you're unsure about the suitability of these pistons for your specific Subaru engine and modifications, it's recommended to consult with a professional mechanic or performance specialist.

Details:

May not be accurate. This item comes with the full manufacturers warranty. The color, quantity, size, etc

The compatibility section is not always 100% accurate. Fast Free, Shipping: Brand SRP Pistons, Part Number 149225, UPC Code, Condition New.

specifications engibearing:

• brand: Srp Pistons
• manufacturer part number: 149225
• type: Auto

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• sold: 0
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• quantity: 4
• started: January 13, 2026
• availability: In Stock

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• condition: New
• Car Truck Parts Accessories > Engines Engine Parts > Engine Bearings

Srp Pistons 149225 Is Similar To:

• Srp Pistons 149215 (94.4% similar) This item comes with the full manufacturers warranty. May not be accurate. The compatibility section is not always 100% accurate. Fast free, shipping: brand Srp Pistons, part number 149215, UPC code, condition new...(January 13th, 2026)