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  See more parts for Mitsubishi Galant
Select the year of your Mitsubishi Galant:
ACL Mitsubishi 4G63/4G64 6 Bolt 1st Gen DSM 0.25mm Oversized Main Bearing Set - 5M1144H-.25
ACL Mitsubishi 4G63/4G64 6 Bolt 1st Gen DSM 0.25mm Oversized Main Bearing Set - 5M1144H-.25 - Image 2 ACL Mitsubishi 4G63/4G64 6 Bolt 1st Gen DSM 0.25mm Oversized Main Bearing Set - 5M1144H-.25 - Image 2

ACL 5M1144H-.25 High Performance Main Bearing Set

The ACL 5M1144H-.25 is a high-performance main bearing set designed specifically for enthusiasts who demand reliability and durability from their engine components. This set is engineered to meet the rigorous demands of high RPM conditions, making it a solid choice for those looking to enhance their Mitsubishi 4G63/4G64 engine performance.

Features:

  • High strength overlay plate with reduced thickness enhances fatigue properties.
  • Hardened steel backs provide improved support for the bearing lining, ensuring better retention in the housing.
  • Increased crush for better bearing retention during operation.
  • Elimination of flash plating on the back improves heat transfer and maximizes grip between bearings and housing.
  • Increased eccentricity helps accommodate bore distortion at high RPM and supports hydrodynamic oil film formation.
  • 3/4 grooved design optimizes load carrying surface area and oil flow to the conrod bearings.
  • Tight tolerances maintain consistent clearances, crucial for performance applications.
  • Enlarged ID chamfers on bearing edges accommodate large fillet radii on performance crankshafts.

Specifications:

  • Size: 0.25mm Oversized
  • Oil Clearance: Standard
  • Half Type: Identical Halves
  • Material: Tri-metal
  • Min Std Shaft Size: 2.2433 in / 56.980 mm
  • Max Std Shaft Size: 2.2441 in / 57.000 mm
  • Min Std Tunnel Size: 2.4016 in / 61.000 mm
  • Max Std Tunnel Size: 2.4024 in / 61.021 mm
  • Max Wall at Crown: 0.0783 in / 1.990 mm
  • Max Overall Length: 0.906 in / 23.00 mm

Customer Feedback:

Many customers have reported significant improvements in engine performance after switching to the ACL 5M1144H-.25 bearings. One user mentioned, "I noticed less noise and smoother operation in my engine after installing these bearings. They fit perfectly and have held up well under stress." Another customer highlighted, "These bearings are a game-changer for my build. They provide the reliability I need for high RPM driving." Overall, users appreciate the quality engineering and fitment of this product.

Other Part Numbers:
ACL #acl5M1144H-.25

Proposition 65

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

Vehicle
1994-2012
 Mitsubishi Galant
2002-2017
 Mitsubishi Lancer

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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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