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  See more parts for Mitsubishi 3000GT
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ACL Mitsubishi 6G72 6G72T 6G73 Standard Size Main Bearings - Trimetal Engine Bearings - 4M1149H-STD
ACL Mitsubishi 6G72 6G72T 6G73 Standard Size Main Bearings - Trimetal Engine Bearings - 4M1149H-STD - Image 2 ACL Mitsubishi 6G72 6G72T 6G73 Standard Size Main Bearings - Trimetal Engine Bearings - 4M1149H-STD - Image 2

ACL 4M1149H-STD Main Bearings - Standard Size

The ACL 4M1149H-STD Main Bearings are engineered for high-performance applications, specifically designed for the Mitsubishi 6G72, 6G72T, and 6G73 engines. These tri-metal bearings combine advanced metallurgy and precision engineering to meet the demands of high RPM conditions, ensuring durability and reliability under stress.

Key Features

  • High-strength overlay plate with reduced thickness enhances fatigue properties, making these bearings suitable for extended use in performance applications.
  • Hardened steel backs on all rod bearings improve support for the bearing lining and ensure secure retention within the housing.
  • Increased crush enhances bearing retention, reducing the likelihood of movement under load.
  • Removal of flash plating on the back of the bearings allows for better heat transfer, maximizing grip between the bearings and their housing.
  • Increased eccentricity compensates for bore distortion at high RPM, facilitating optimal hydrodynamic oil film formation.
  • 3/4 grooved design optimizes load-carrying surface area and oil flow to the connecting rod bearings.
  • Tight and consistent wall tolerances maintain precise clearances for improved engine performance.
  • Enlarged ID chamfers accommodate large fillet radii on performance crankshafts, ensuring compatibility with aftermarket components.

Specifications

  • Size: Standard (STD), .025, .25
  • Oil Clearance: Standard
  • Half Type: Identical Halves
  • Material: Tri-metal with hardened steel backs
  • Minimum Standard Shaft Size: 2.3614 in / 59.980 mm
  • Maximum Standard Shaft Size: 2.3622 in / 60.000 mm
  • Minimum Standard Tunnel Size: 2.5197 in / 64.000 mm
  • Maximum Standard Tunnel Size: 2.5205 in / 64.020 mm
  • Maximum Wall at Crown: 0.0783 in / 1.988 mm
  • Maximum Overall Length: 0.714 in / 18.13 mm

Fitment

These main bearings are compatible with the following models:

  • Mitsubishi 3000GT (1991-2000)
  • Mitsubishi Eclipse (1990-2011)

Other Part Numbers:
ACL #acl4M1149H-STD

Proposition 65

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

Vehicle
1991-2000
 Mitsubishi 3000GT
1990-2011
 Mitsubishi Eclipse

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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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