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ACL Engine Bearings Connecting Rod Bearing Set for BMW E30 M3 S14B20/23/25 I4, Size STD - 4B1568H-STD
ACL Engine Bearings Connecting Rod Bearing Set for BMW E30 M3 S14B20/23/25 I4, Size STD - 4B1568H-STD - Image 2 ACL Engine Bearings Connecting Rod Bearing Set for BMW E30 M3 S14B20/23/25 I4, Size STD - 4B1568H-STD - Image 2

If you're diving into the world of high-performance engines, you know that the little things can make a big difference. That's where these ACL Race Series Engine Bearings come into play. Designed with a mix of smart engineering and solid metallurgy, these bearings are built to handle the demands of higher RPMs without breaking a sweat. They fit right into popular 4, 6, and 8-cylinder setups, making them a solid choice for anyone looking to push their engine's limits.

What Makes Them Stand Out:

  • High Strength Overlay: The overlay plate is thinner but tougher, which means better fatigue resistance. You want your bearings to last, especially when you're pushing your engine hard.
  • Hardened Steel Backs: All rod bearings come with hardened steel backs. This not only supports the bearing lining but also helps keep everything locked into place within the housing.
  • Increased Crush: More crush means better retention, so these bearings stay put even under pressure.
  • No Flash Plating: We ditched the flash plating on the back, which helps with heat transfer and ensures a solid grip between the bearings and the housing.
  • Increased Eccentricity: This feature helps counteract bore distortion at high RPMs and aids in forming hydrodynamic oil films, crucial for those high-speed runs.
  • 3/4 Grooved Main Bearings: These are designed to optimize load carrying and oil flow to the conrod bearings, which is essential for keeping everything lubricated.
  • Tight Wall Tolerances: Consistent wall tolerances mean you can maintain clearances that are spot on, which is key for engine performance.
  • Enlarged ID Chamfers: These accommodate larger fillet radii on performance crankshafts, making sure everything fits smoothly.

Specifications You Should Know:

  • Size: Available in STD, .025, and .25
  • Oil Clearance: Standard
  • Half Type: Identical Halves
  • Material: Tri-metal Hardened Steel Backs
  • Min Std Shaft Size: 1.8888in / 47.975 mm
  • Max Std Shaft Size: 1.8894in / 47.9911 mm
  • Min Std Tunnel Size: 2.0472in / 52.000 mm
  • Max Std Tunnel Size: 2.0478in / 52.015 mm
  • Max Wall at Crown: 0.0785in / 1.993 mm
  • Max Overall Length: 0.787in / 20.00 mm

For those working on a BMW E30 M3 with the S14B20/23/25 I4 engine, this 4B1568H-STD ACL Connecting Rod Bearing Set in size STD is a perfect fit. These bearings are not just about specs; they’re about keeping your engine running smoothly when it matters most. So if you're aiming for that extra edge in performance, these bearings might just be what you're looking for.

Other Part Numbers:
ACL #acl4B1568H-STD

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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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