ACL 7M1172HX-STD Main Bearing Set for 1970-1984 Nissan L20/L24/L28 Engines

Vehicle Fitment

• 1970-1973 Nissan 240Z (Base, 2+2)
• 1974-1975 Nissan 260Z (Base, 2+2)
• 1975-1978 Nissan 280Z (Base, 2+2)
• 1979-1983 Nissan 280ZX (Base, 2+2, GL, Turbo)
• 1977-1980 Nissan 810 (Base)
• 1981-1984 Nissan Maxima (GL, SL)

Features

• Trimetal construction with steel back, copper-lead, and overlay
• Enhanced bearing eccentricity for improved oil retention
• Increased crush for better bearing retention
• Extended grooves to optimize oil flow
• Enlarged I.D. chamfers for improved fitment
• Extra oil clearance of 0.001" for high-performance applications
• Designed for both naturally aspirated and turbocharged engines
• Suitable for street and motorsport applications

Specifications

• Width: 0.949 in.
• Outside Diameter: 2.3094 in. (Upper), 2.3089 in. (Lower)
• Shaft Diameter: 2.1636 in. (Upper), 2.1631 in. (Lower)
• Material: Trimetal (Steel back, copper-lead, overlay)
• Compatibility: Standard size for OEM crankshafts
• Oil Clearance: +0.001" extra clearance

Included Components

• 1x ACL 7M1172HX-STD Main Bearing Set

Product Description

The ACL 7M1172HX-STD Main Bearing Set is engineered to provide superior performance and reliability for Nissan's L20, L24, and L28 engines. Whether you're building a high-performance street engine or restoring your classic Nissan, these bearings offer the durability needed to withstand the rigors of high RPM operation.

Constructed with a trimetal design, the ACL bearings feature a high-strength overlay plate that reduces thickness for improved fatigue resistance. The hardened steel backs enhance bearing retention, while increased crush improves overall stability. These bearings are designed to fit standard OEM crankshafts, ensuring a hassle-free installation.

Ideal for both naturally aspirated and turbocharged applications, the ACL 7M1172HX-STD bearings are a trusted choice for enthusiasts seeking performance and longevity. Please note that fitment is confirmed through 2024; 2025 coverage is unconfirmed at time of listing.