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  See more parts for BMW M-Coupe
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ACL BMW S50B30 3.0L .25mm Oversized Performance Rod Bearing Set 1999-2008 M-Coupe - 6B1515H-.25
ACL BMW S50B30 3.0L .25mm Oversized Performance Rod Bearing Set 1999-2008 M-Coupe - 6B1515H-.25 - Image 2 ACL BMW S50B30 3.0L .25mm Oversized Performance Rod Bearing Set 1999-2008 M-Coupe - 6B1515H-.25 - Image 2

ACL Race Series Engine Bearings 6B1515H-.25

If you're a proud owner of a BMW M-Coupe (1999-2002 & 2006-2008), you know that performance is everything. The ACL Race Series Engine Bearings are engineered with a unique blend of design, metallurgy, and hands-on experience to deliver the reliability and performance you expect from high-performance engine components. These Trimetal bearings are specifically designed to handle the demands of high RPM conditions, making them a must-have for serious enthusiasts.

Key Features

  • High-strength overlay plate with reduced thickness enhances fatigue properties, ensuring durability during intense driving.
  • Hardened steel backs on all rod bearings provide superior support for the bearing lining, ensuring they stay securely in place.
  • Increased crush enhances bearing retention, giving you peace of mind during high-performance applications.
  • Flash plating elimination on the back of the bearings allows for better heat transfer and maximizes grip between the bearings and housing.
  • Increased eccentricity compensates for bore distortion at high RPM, promoting the formation of hydrodynamic oil films.
  • 3/4 grooved main bearings optimize load-carrying surface area and oil flow to conrod bearings, improving lubrication efficiency.
  • Tight, consistent wall tolerances help maintain precise clearances for optimal performance.
  • Enlarged ID chamfers accommodate large fillet radii on performance crankshafts, ensuring a perfect fit.

Technical Specifications

  • Size: STD, .025, .25
  • Oil Clearance: Standard
  • Half Type: Identical Halves
  • Material: Tri-metal Hardened Steel Backs
  • Min Standard Shaft Size: 1.9675 in / 49.975 mm
  • Max Standard Shaft Size: 1.9681 in / 49.991 mm
  • Min Standard Tunnel Size: 2.0866 in / 53.000 mm
  • Max Standard Tunnel Size: 2.0875 in / 53.015 mm
  • Max Wall at Crown: 0.0588 in / 1.493 mm
  • Max Overall Length: 0.709 in / 18.00 mm

Customer Feedback

BMW M-Coupe owners rave about the difference these bearings make. One customer noted, "After installing the ACL Race bearings, my engine feels smoother, and the RPMs climb effortlessly. They fit perfectly, and I’ve noticed better oil pressure during spirited drives." This kind of feedback highlights the real-world benefits of choosing ACL for your performance upgrades.

Why Choose ACL?

When it comes to enhancing your BMW M-Coupe's performance, the right components make all the difference. The ACL Race Series Engine Bearings are built to withstand the rigors of racing and spirited driving, ensuring your engine runs as it should. Upgrade your setup today and experience the difference!

Other Part Numbers:
ACL #acl6B1515H-.25

Proposition 65

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

Vehicle
1999-2002, 2006-2008
 BMW M-Coupe

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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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