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  See more parts for Mazda MX-3
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ACL High Performance Main Bearing Set .50mm for Mazda B6/BP/BP-T 1.6/1.8L 1990-2021 - 5M8353H-.50
ACL High Performance Main Bearing Set .50mm for Mazda B6/BP/BP-T 1.6/1.8L 1990-2021 - 5M8353H-.50 - Image 2 ACL High Performance Main Bearing Set .50mm for Mazda B6/BP/BP-T 1.6/1.8L 1990-2021 - 5M8353H-.50 - Image 2

ACL 5M8353H-.50 High Performance Main Bearing Set

The ACL 5M8353H-.50 main bearing set is engineered specifically for high-performance applications, particularly suited for the Mazda B6/BP/BP-T engines with 1.6L and 1.8L configurations. This .50mm oversized bearing set is designed to meet the rigorous demands of higher RPM conditions, ensuring durability and reliability under extreme performance scenarios.

Key Features

  • Trimetal Construction: Features a high-strength overlay plate that reduces thickness, enhancing fatigue resistance and longevity.
  • Hardened Steel Backs: All rod bearings are equipped with hardened steel backs, providing superior support for the bearing lining and improving retention within the housing.
  • Optimized Crush Design: Increased crush enhances bearing retention, ensuring that the bearings stay securely in place during operation.
  • Improved Heat Transfer: The elimination of flash plating on the back of the bearings allows for better heat dissipation and maximizes grip between the bearings and housing.
  • Enhanced Eccentricity: Designed to accommodate bore distortion at high RPM, facilitating the formation of hydrodynamic oil films for better lubrication.
  • 3/4 Grooved Configuration: Main bearings are designed with a 3/4 groove to optimize load-carrying surface area and improve oil flow to connecting rod bearings.
  • Consistent Wall Tolerances: Tight tolerances help maintain consistent clearances, crucial for performance applications.
  • Enlarged ID Chamfers: Chamfers on bearing edges are designed to accommodate larger fillet radii found on performance crankshafts.

Specifications

  • Size: .50mm Oversized
  • Oil Clearance: Standard
  • Half Type: Identical Halves
  • Material: Tri-metal with Hardened Steel Backs
  • Min Standard Shaft Size: 1.9661 in / 49.938 mm
  • Max Standard Shaft Size: 1.9668 in / 49.956 mm
  • Min Standard Tunnel Size: 2.1259 in / 53.998 mm
  • Max Standard Tunnel Size: 2.1267 in / 54.018 mm
  • Max Wall at Crown: 0.0793 in / 2.013 mm
  • Max Overall Length: 0.6941 in / 17.63 mm

Fitment

Confirmed fitment includes:

  • Mazda Miata (1990-1997 & 1999-2021)
  • Mazda MX-3 (1993-1998)

Other Part Numbers:
ACL #acl5M8353H-.50

Proposition 65

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

Vehicle
1993-1998
 Mazda MX-3
1990-1997, 1999-2021
 Mazda Miata

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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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