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  See more parts for Nissan 200SX S12
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ACL Nissan 4 1597-1809 1974cc CA16/18/20 0.25 Oversized Rod Bearing Set 1982-2005 - 4B1630-.25
ACL Nissan 4 1597-1809 1974cc CA16/18/20 0.25 Oversized Rod Bearing Set 1982-2005 - 4B1630-.25 - Image 2 ACL Nissan 4 1597-1809 1974cc CA16/18/20 0.25 Oversized Rod Bearing Set 1982-2005 - 4B1630-.25 - Image 2

ACL 4B1630-.25 Rod Bearing Set

The ACL 4B1630-.25 Rod Bearing Set is engineered for those who demand precision and reliability from their engine components. Designed specifically for high-performance applications, these tri-metal bearings are built to withstand the rigors of higher RPM operation, making them ideal for both street and track use.

Key Features

  • High-strength overlay plate with reduced thickness enhances fatigue resistance.
  • Hardened steel backs provide robust support for the bearing lining and improve retention within the housing.
  • Increased crush design ensures better bearing retention during operation.
  • Elimination of flash plating on the back enhances heat transfer and maximizes grip between the bearing and housing.
  • Increased eccentricity compensates for bore distortion at high RPM, facilitating the formation of hydrodynamic oil films.
  • 3/4 grooved main bearings optimize load-carrying surface area and oil flow to the connecting rod bearings.
  • Tight wall tolerances maintain consistent clearances for improved performance.
  • Enlarged ID chamfers accommodate large fillet radii on performance crankshafts.

Specifications

  • Available Sizes: STD, .025, .25, .50
  • Oil Clearance: Standard
  • Half Type: Identical Halves
  • Material: Tri-metal with hardened steel backs
  • Min Standard Shaft Size: 1.7701 in / 44.961 mm
  • Max Standard Shaft Size: 1.7701 in / 44.961 mm
  • Min Standard Tunnel Size: 1.8898 in / 48 mm
  • Max Standard Tunnel Size: 1.8903 in / 48.013 mm
  • Max Wall Thickness at Crown: 0.0593 in / 1.505 mm
  • Max Overall Length: 0.792 in / 20.12 mm

Confirmed Fitment

  • Nissan 200SX S12 (1985-1988)
  • Nissan Pulsar (1987-2005)
  • Nissan Sentra (1982-2018)

Other Part Numbers:
ACL #acl4B1630-.25

Proposition 65

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

Vehicle
1985-1988
 Nissan 200SX S12
1987-2005
 Nissan Pulsar
1982-2018
 Nissan Sentra

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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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