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  See more parts for Subaru Legacy
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ACL 5M8297A-.25 Oversized Main Bearing Set for Subaru EJ18/EJ20/EJ22/EJ25 0.25mm - 5M8297A-.25
ACL 5M8297A-.25 Oversized Main Bearing Set for Subaru EJ18/EJ20/EJ22/EJ25 0.25mm - 5M8297A-.25 - Image 2 ACL 5M8297A-.25 Oversized Main Bearing Set for Subaru EJ18/EJ20/EJ22/EJ25 0.25mm - 5M8297A-.25 - Image 2

ACL 5M8297A-.25 Main Bearing Set

Introducing the ACL 5M8297A-.25, a meticulously crafted main bearing set designed specifically for Subaru engines, particularly the EJ18, EJ20, EJ22, and EJ25 models. This 0.25mm oversized set is engineered to meet the demands of high-performance applications, providing reliability and durability under extreme conditions.

Key Features:

  • High Strength Overlay: The overlay plate is designed with a reduced thickness that enhances fatigue resistance, making it suitable for higher RPM situations.
  • Hardened Steel Backs: Each rod bearing features hardened steel backs to improve support for the lining and ensure better retention within the housing.
  • Increased Crush: Enhanced crush design improves bearing retention, ensuring stability during operation.
  • Heat Transfer Efficiency: The elimination of flash plating on the backs allows for better heat transfer and maximizes the grip between bearings and their housings.
  • Increased Eccentricity: This feature compensates for bore distortion at high RPM, aiding in the formation of hydrodynamic oil films.
  • Optimized Oil Flow: The 3/4 grooved design of the main bearings maximizes the load-carrying surface area and ensures efficient oil flow to the conrod bearings.
  • Tight Tolerances: Consistent wall tolerances help maintain precise clearances, crucial for high-performance builds.
  • Chamfered Edges: Enlarged ID chamfers accommodate larger fillet radii on performance crankshafts, enhancing compatibility.

Specifications:

  • Part Number: 5M8297A-.25
  • Material: Trimetal
  • Min Std Shaft Size: 2.3616"
  • Max Std Shaft Size: 2.3622"
  • Min Std Tunnel Size: 2.5197"
  • Max Std Tunnel Size: 2.5205"

Customer Feedback:

Users have reported noticeable improvements in engine performance and reliability after installing the ACL 5M8297A-.25 bearings. One customer mentioned, “I’ve been using these bearings in my EJ20 build, and they’ve held up great even during track days. The fit was perfect, and I appreciate the attention to detail in the design.” Another user added, “These bearings give me peace of mind knowing my engine can handle the extra power without any issues.”

Upgrade your Subaru's engine with the ACL 5M8297A-.25 main bearing set for a durable and high-performing solution.

Other Part Numbers:
ACL #acl5M8297A-.25

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Vehicle
1990-2017
 Subaru Legacy

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Who is ACL?

ACL is a company that specializes in manufacturing and distributing high-quality engine bearings that have played a key role in the Australian automotive parts market. 

Based in Launceston, Tasmania, Australia, the company has been in the business for more than 70 years and has become the leading brand when it comes to its market segment.

Throughout the years, ACL has consistently provided top quality products and has become the equipment supplier of multiple Automotive brands such as Lancia, Mazda, Mini, Mitsubishi, Nissan, Peugeot, Subaru, Toyota, Volvo, Suzuki, Renault, SAAB, and more.  ACL also provides a replacement product range used by the aftermarket industry.

The company ensures that it maintains its high level of standard by employing manufacturing processes that are ISO certified. They also use the industry’s most advanced tooling equipment and designing software that allows them to create products that are superior in quality. ACL has been known worldwide to create bearings that are durable, innovative, and precise.

ACL also offers bearing used for high-performance applications. The company has been involved in motorsport racing since the 1960s and has manufactured bearings used in Brabham Formula 1. Today, their products are being used in different racing disciplines such as the Australian Supercar Championship, Drag racing, Driftings, and Rally.

Purchase ACL Bearings at Vivid Racing

Engine Bearings are a critical component of a vehicle and should not be overlooked. If you want to make sure that what you get is something you could rely on, then ACL is the brand for you. With over 200 engine applications, whether it’s an American, Australian, European, or Asian made vehicle, ACL got you covered. Visit Vivid Racing and check out their list of bearings that would fit your specific needs.

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