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ACL Performance Rod Bearing Set .25mm Oversized for Ford/Cosworth 2.0L YB Engine - 4B2166H-.25
ACL Performance Rod Bearing Set .25mm Oversized for Ford/Cosworth 2.0L YB Engine - 4B2166H-.25 - Image 2 ACL Performance Rod Bearing Set .25mm Oversized for Ford/Cosworth 2.0L YB Engine - 4B2166H-.25 - Image 2

ACL 4B2166H-.25 Performance Rod Bearing Set

The ACL 4B2166H-.25 is a standout choice for those looking to enhance their engine's performance. Designed specifically for the Ford/Cosworth 2.0L (YB) engine, this rod bearing set combines advanced metallurgy and engineering to meet the demands of high-performance driving. Whether you're hitting the track or just want a reliable upgrade for your daily driver, these bearings are built to deliver.

Features

  • High strength overlay plate with a reduced thickness that enhances fatigue properties, ensuring durability under high RPM conditions.
  • Hardened steel backs provide robust support for the bearing lining, improving retention within the housing.
  • Increased crush enhances bearing retention, giving you peace of mind during aggressive driving.
  • Elimination of flash plating on the back improves heat transfer and maximizes grip between the bearings and housing.
  • Increased eccentricity helps compensate for bore distortion at high RPM, aiding in the formation of hydrodynamic oil films.
  • 3/4 grooved main bearings optimize the load-carrying surface area and oil flow to the conrod bearings.
  • Tight and consistent wall tolerances help maintain clearances, crucial for performance applications.
  • Enlarged ID chamfers on the edges accommodate larger fillet radii on performance crankshafts.

Specifications

  • Size: .25mm Oversized
  • Oil Clearance: +0.001" Extra
  • Half Type: Identical Halves
  • Material: Tri-metal with Hardened Steel Backs
  • Min Std Shaft Size: 2.0468 in / 51.990 mm
  • Max Std Shaft Size: 2.0472 in / 52.000 mm
  • Min Std Tunnel Size: 2.1654 in / 55.000 mm
  • Max Std Tunnel Size: 2.1661 in / 55.020 mm
  • Max Wall at Crown: 0.0589 in / 1.496 mm
  • Max Overall Length: 0.792 in / 20.12 mm

Customer Feedback

"I installed the ACL 4B2166H-.25 in my Cosworth engine, and the difference was noticeable right away. The fit was perfect, and I appreciate the attention to detail in the design. I feel much more confident pushing my RPMs now!" - James R.

"These bearings have held up great under racing conditions. I’ve had no issues with oil flow or overheating, which was a concern with other brands I tried. Highly recommend!" - Maria T.

Other Part Numbers:
ACL #acl4B2166H-.25

Proposition 65

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

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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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