1-480-966-3040 Mon-Fri 8am to 5pm AZ
Performance & Aftermarket Car Parts - Vivid Racing Performance & Aftermarket Car Parts - Vivid Racing
Live Chat
Hello, Sign in My Account
Sign In
Wishlist
0
My Cart
My Cart $0.00
  See more parts for Mitsubishi Eclipse
Select the year of your Mitsubishi Eclipse:
ACL Mitsubishi 4G63/4G64 7 Bolt Standard Size Main Bearing Set for Eclipse 1990-2011 - 5M1186A-STD
ACL Mitsubishi 4G63/4G64 7 Bolt Standard Size Main Bearing Set for Eclipse 1990-2011 - 5M1186A-STD - Image 2 ACL Mitsubishi 4G63/4G64 7 Bolt Standard Size Main Bearing Set for Eclipse 1990-2011 - 5M1186A-STD - Image 2

ACL 5M1186A-STD Main Bearing Set

The ACL 5M1186A-STD Main Bearing Set is engineered for high-performance applications, specifically designed for the Mitsubishi 4G63 and 4G64 engines found in the 2nd Generation DSM and EVO I-IV models. These bearings utilize advanced metallurgy and precise engineering to meet the demands of high RPM conditions, ensuring durability and reliability under extreme stress.

Key Features

  • High-strength overlay plate with reduced thickness enhances fatigue resistance, allowing for better performance at elevated RPMs.
  • Hardened steel backs on all bearings improve support for the bearing lining and enhance retention within the housing.
  • Increased crush design boosts bearing retention, ensuring stable operation even under high load scenarios.
  • Flash plating elimination on the back of the bearings enhances heat transfer, optimizing the grip between the bearings and their housing.
  • Increased eccentricity compensates for bore distortion at high RPM, aiding the formation of hydrodynamic oil films for improved lubrication.
  • 3/4 grooved main bearings maximize load-carrying surface area and facilitate oil flow to connecting rod bearings.
  • Tight, consistent wall tolerances maintain precise clearances, which is crucial for engine performance.
  • Enlarged ID chamfers on bearing edges accommodate large fillet radii on performance crankshafts.

Specifications

  • Size: Standard (STD), .025, .25
  • Oil Clearance: Standard
  • Half Type: Upper & Lower
  • Material: Tri-metal with hardened steel backs
  • Min Std Shaft Size: 2.2435 in / 56.985 mm
  • Max Std Shaft Size: 2.2441 in / 57.4 mm
  • Min Std Tunnel Size: 2.4016 in / 61 mm
  • Max Std Tunnel Size: 2.4024 in / 61.021 mm
  • Max Wall at Crown: 0.0783 in / 1.99 mm
  • Max Overall Length: 0.8268 in / 21 mm

Fitment

This main bearing set is compatible with the following models:

  • Mitsubishi Eclipse (1990-2011)

Other Part Numbers:
ACL #acl5M1186A-STD

Proposition 65

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

Vehicle
1990-2011
 Mitsubishi Eclipse

ACL Banner

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.

Check out these other great products