1-480-966-3040 Mon-Fri 8am to 5pm AZ
Performance & Aftermarket Car Parts - Vivid Racing Performance & Aftermarket Car Parts - Vivid Racing
Live Chat
Hello, Sign in My Account
Sign In
Wishlist
0
My Cart
My Cart $0.00
  See more parts for BMW Z4
Select the year of your BMW Z4:
ACL Race Series Conrod Bearing Set .25mm Oversized for BMW M20/M50/M52/M54 1919CC 2003-2015 - 6B1490H-.25
ACL Race Series Conrod Bearing Set .25mm Oversized for BMW M20/M50/M52/M54 1919CC 2003-2015 - 6B1490H-.25 - Image 2 ACL Race Series Conrod Bearing Set .25mm Oversized for BMW M20/M50/M52/M54 1919CC 2003-2015 - 6B1490H-.25 - Image 2

ACL 6B1490H-.25 Race Series Engine Bearings for BMW Z4 (2003-2015)

For BMW Z4 owners looking to enhance their engine's performance, the ACL 6B1490H-.25 Race Series Engine Bearings are engineered to meet the demands of high RPM driving. These bearings are designed with a unique blend of advanced metallurgy and precision engineering, ensuring they can withstand the rigors of spirited driving and track days. Whether you're pushing your Z4 on the street or the circuit, these bearings are a must-have upgrade for serious performance enthusiasts.

Key Features

  • High-strength overlay plate with reduced thickness enhances fatigue properties, ensuring long-lasting durability under extreme conditions.
  • Hardened steel backs on all rod bearings provide superior support for the bearing lining, improving retention within the housing.
  • Increased crush for better bearing retention, allowing for consistent performance even under heavy loads.
  • Flash plating elimination on the back of the bearings promotes better heat transfer, maximizing grip between the bearing and housing.
  • Increased eccentricity compensates for bore distortion at high RPMs, aiding in the formation of hydrodynamic oil films.
  • 3/4 grooved main bearings optimize load-carrying surface area and oil flow to the conrod bearings, enhancing lubrication and performance.
  • Tight, consistent wall tolerances help maintain precise clearances, crucial for high-performance applications.
  • Enlarged ID chamfers accommodate large fillet radii on performance crankshafts, ensuring compatibility with aftermarket setups.

Technical Specifications

  • Size Options: STD, .025, .25, .50
  • Oil Clearance: Standard
  • Half Type: Identical Halves
  • Material: Tri-metal with Hardened Steel Backs
  • Minimum Standard Shaft Size: 1.7707 in / 44.975 mm
  • Maximum Standard Shaft Size: 1.7713 in / 44.991 mm
  • Minimum Standard Tunnel Size: 1.8898 in / 48.000 mm
  • Maximum Standard Tunnel Size: 1.8904 in / 48.016 mm
  • Maximum Wall Thickness at Crown: 0.0588 in / 1.493 mm
  • Maximum Overall Length: 0.709 in / 18.00 mm

Fitment

These ACL Race Series Engine Bearings are specifically designed for the BMW Z4 (2003-2015). When installed, they provide the reliability and performance that Z4 owners demand, especially when pushing their vehicles to the limit.

Customer Feedback

One Z4 owner shared their experience: “I installed the ACL 6B1490H-.25 bearings during my engine rebuild, and the difference was noticeable. The engine runs smoother at high RPMs, and I feel more confident pushing it during track days.”

Upgrade your BMW Z4’s engine with ACL 6B1490H-.25 Race Series Engine Bearings and experience the performance enhancement that comes from precision engineering and high-quality materials.

Other Part Numbers:
ACL #acl6B1490H-.25

Proposition 65

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

Vehicle
2003-2015
 BMW Z4

ACL Banner

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.

Check out these other great products