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ACL Race Series Main Bearing Set 0.25 Oversized for Nissan L16E/L18E 68-74 1595cc/1770cc - 5M1172H-.25

If you're looking to keep your engine running smooth at those high RPMs, the ACL Race Series Engine Bearings are worth checking out. These aren’t just any bearings; they’re designed specifically for the demands of performance engines, whether you're running a 4, 6, or 8-cylinder setup. Trust me, you’ll appreciate the engineering that’s gone into these.

  • High Strength Overlay Plate: The reduced thickness here isn’t just for show. It actually improves fatigue properties, which means these bearings can take a beating without giving up.
  • Hardened Steel Backs: You’ll find hardened steel backs on all rod bearings. This adds extra support to the bearing lining and helps keep everything snug in the housing.
  • Increased Crush: This feature enhances bearing retention, so you won’t have to worry about them shifting around when the engine’s running hard.
  • No Flash Plating: Forget about that flash plating on the back. This design helps heat transfer better and maximizes the grip between the bearings and their housing, which is crucial when you're pushing your engine.
  • Increased Eccentricity: This compensates for bore distortion at high RPMs, helping form those all-important hydrodynamic oil films.
  • 3/4 Grooved Main Bearings: This setup optimizes the load carrying surface area and improves oil flow to your conrod bearings, so everything stays well-lubricated.
  • Tight Wall Tolerances: Consistency is key, and these bearings help you maintain those critical clearances.
  • Enlarged ID Chamfers: Where needed, these chamfers accommodate large fillet radii on performance crankshafts, making installation a breeze.

For those of you running a Nissan L16E or L18E engine (1595cc/1770cc) from '68 to '74, this 0.25 oversized main bearing set (part number 5M1172H-.25) is a solid choice. They’re built to handle the heat and keep your engine performing at its best. If you’re serious about your build, you’ll want to give these bearings a shot.

Other Part Numbers:
ACL #acl5M1172H-.25

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⚠ 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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