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  See more parts for Subaru Forester
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ACL Subaru EJ20/EJ22/EJ25 0.25mm Oversized Trimetal Main Bearing for 1993-2017 Models - 5M8309H-.25
ACL Subaru EJ20/EJ22/EJ25 0.25mm Oversized Trimetal Main Bearing for 1993-2017 Models - 5M8309H-.25 - Image 2 ACL Subaru EJ20/EJ22/EJ25 0.25mm Oversized Trimetal Main Bearing for 1993-2017 Models - 5M8309H-.25 - Image 2

ACL 5M8309H-.25 High Performance Main Bearing

The ACL 5M8309H-.25 is specially designed for those who demand high performance from their Subaru engines. This main bearing is a part of the ACL Race Series, known for its unique blend of design, metallurgy, and engineering. It’s crafted to handle the rigors of high RPM conditions, making it a reliable choice for enthusiasts and racers alike.

Features:

  • High strength overlay plate with reduced thickness enhances fatigue properties.
  • Hardened steel backs on all rod bearings improve support and retention.
  • Increased crush for better bearing retention.
  • Elimination of flash plating aids in heat transfer and maximizes grip.
  • Increased eccentricity compensates for bore distortion at high RPM.
  • 3/4 grooved design optimizes load carrying surface area and oil flow.
  • Tight tolerances help maintain consistent clearances.
  • Enlarged ID chamfers accommodate large fillet radii on performance crankshafts.

Specifications:

  • Size: 0.25mm oversized
  • Oil Clearance: Standard
  • Half Type: Identical Halves
  • Material: Tri-metal Hardened Steel Backs
  • Min Std Shaft Size: 2.3616 in / 59.984 mm
  • Max Std Shaft Size: 2.3622 in / 60.000 mm
  • Min Std Tunnel Size: 2.5194 in / 64.000 mm
  • Max Std Tunnel Size: 2.5205 in / 64.020 mm
  • Max Wall at Crown: 0.0789 in / 2.005 mm
  • Max Overall Length: 0.748 in / 19 mm

Customer Feedback:

Many users have reported a noticeable improvement in engine performance after installing the 5M8309H-.25 bearings. One customer mentioned, "I installed these in my WRX and the difference was immediate. The engine felt smoother, and I could push it harder without worrying about wear." Another user appreciated the fit, stating, "These bearings fit perfectly and gave me the confidence to take my car to the track."

Fitment:

These bearings are compatible with the following Subaru models:

  • Subaru Forester 1998-2017
  • Subaru Impreza 1993-2017
  • Subaru WRX 2002-2022

Other Part Numbers:
ACL #acl5M8309H-.25

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle
1998-2017
 Subaru Forester
1993-2017
 Subaru Impreza
2002-2022
 Subaru WRX

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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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