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  See more parts for Ford Fiesta ST
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ACL Ford 4 2.0L Duratec Standard Size Race Series Rod Bearing Set 4B4390H-STD - 4B4390H-STD
ACL Ford 4 2.0L Duratec Standard Size Race Series Rod Bearing Set 4B4390H-STD - 4B4390H-STD - Image 2 ACL Ford 4 2.0L Duratec Standard Size Race Series Rod Bearing Set 4B4390H-STD - 4B4390H-STD - Image 2

ACL 4B4390H-STD Race Series Rod Bearing Set

The ACL 4B4390H-STD is a high-performance rod bearing set designed specifically for those who demand reliability and durability in their engine components. Engineered with a unique blend of design and metallurgy, these bearings are built to handle the rigors of high RPM conditions, making them an ideal choice for motorsport enthusiasts and performance drivers alike.

Features:

  • High strength overlay plate with reduced thickness to enhance fatigue resistance.
  • Hardened steel backs provide robust support for the bearing lining and improve retention within the housing.
  • Increased crush for better bearing retention during operation.
  • Elimination of flash plating on the back enhances heat transfer and maximizes grip in the housing.
  • Increased eccentricity to account for bore distortion at high RPM, aiding in hydrodynamic oil film formation.
  • 3/4 grooved main bearings optimize load carrying surface area and oil flow to the conrod bearings.
  • Tight and consistent wall tolerances help maintain precise clearances.
  • Enlarged ID chamfers on bearing edges accommodate larger fillet radii on performance crankshafts.

Specifications:

  • Size: STD
  • Oil Clearance: Standard
  • Half Type: Identical Halves
  • Material: Tri-metal Hardened Steel Backs
  • Min Std Shaft Size: 1.8496" / 46.980 mm
  • Max Std Shaft Size: 1.8504" / 47.000 mm
  • Min Std Tunnel Size: 1.9695" / 50.025 mm
  • Max Std Tunnel Size: 1.9703" / 50.045 mm
  • Max Wall at Crown: 0.0592" / 1.503 mm
  • Max Overall Length: 0.640" / 16.25 mm

Customer Feedback:

Many users have praised the ACL 4B4390H-STD for its reliability and performance under stress. One customer noted, "I’ve pushed my engine hard at the track, and these bearings held up perfectly. They fit like a glove and gave me the confidence I needed." Another mentioned, "The quality is evident right out of the box. They’ve improved my engine's performance noticeably." With such positive reviews, it's clear that these bearings are a solid choice for serious automotive enthusiasts.

Other Part Numbers:
ACL #acl4B4390H-STD

Proposition 65

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

Vehicle
2014-2018
 Ford Fiesta ST
2000-2018
 Ford Focus

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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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