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  See more parts for Mazda 323
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ACL Mazda B6/BP/BP-T 1.6/1.8L .25mm Oversized High Performance Rod Bearing Set - 4B8351H-.25
ACL Mazda B6/BP/BP-T 1.6/1.8L .25mm Oversized High Performance Rod Bearing Set - 4B8351H-.25 - Image 2 ACL Mazda B6/BP/BP-T 1.6/1.8L .25mm Oversized High Performance Rod Bearing Set - 4B8351H-.25 - Image 2

ACL 4B8351H-.25 High Performance Rod Bearing Set

The ACL 4B8351H-.25 rod bearing set is engineered for optimal performance in the Mazda B6/BP/BP-T 1.6L and 1.8L engines. This .25mm oversized set is crafted from advanced trimetal materials, designed to withstand the rigors of high RPM applications while ensuring durability and reliability under extreme conditions.

Key Features

  • High-strength overlay plate with a reduced thickness to enhance fatigue resistance.
  • Hardened steel backs on all rod bearings improve support and retention within the housing.
  • Increased crush for enhanced bearing retention, ensuring stability during operation.
  • Elimination of flash plating on the back to optimize heat transfer and grip between bearings and housing.
  • Increased eccentricity to counteract bore distortion at high RPM, aiding in the formation of hydrodynamic oil films.
  • 3/4 grooved design for main bearings to maximize load-carrying surface area and oil flow to the conrod bearings.
  • Tight, consistent wall tolerances to maintain precise clearances for improved performance.
  • Enlarged ID chamfers on bearing edges accommodate large fillet radii on performance crankshafts.

Specifications

  • Size: .25mm oversized
  • Oil Clearance: Standard
  • Half Type: Identical Halves
  • Material: Tri-metal with hardened steel backs
  • Min Standard Shaft Size: 1.7693 in / 44.94 mm
  • Max Standard Shaft Size: 1.7699 in / 44.956 mm
  • Min Standard Tunnel Size: 1.8896 in / 47.996 mm
  • Max Standard Tunnel Size: 1.8904 in / 48.016 mm
  • Max Wall at Crown: 0.0596 in / 1.515 mm
  • Max Overall Length: 0.6693 in / 17 mm

Fitment

This rod bearing set is compatible with the Mazda 323 from 1986 to 2003, making it an ideal choice for those looking to enhance the performance of their engine while maintaining reliability.

Other Part Numbers:
ACL #acl4B8351H-.25

Proposition 65

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

Vehicle
1986-2003
 Mazda 323

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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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