21-01-2025
ACL bearings
Good quality good price
Speak with an Expert
Speak with an Expert
Free* Shipping on Orders Over $159
Easy 30 Days- No Hassle Returns
37,000+ 5 Star Reviews
MFG Fitment Guarantee
Couldn't load pickup availability
ACL Race Series Main Bearings are engineered to handle the demanding conditions of high-performance and high-RPM engine builds. Designed specifically for Nissan’s KA24E and KA24DE engines, these trimetal main bearings provide excellent oil film control, increased fatigue resistance, and superior bearing retention under extreme stress. Ideal for street or track use, these bearings help extend engine life and maintain consistent clearances in performance applications.
Key Features
Trimetal race-grade construction for maximum durability
Standard (STD) size with additional undersizes (.025, .25) available
High-strength overlay plate with reduced thickness for improved fatigue resistance
Hardened steel backing for better support and housing fit
3/4 groove design improves oil flow and bearing load distribution
Enhanced eccentricity to account for high-RPM bore distortion
No flash plating to optimize heat dissipation
Precision-machined for consistent oil clearance
Enlarged chamfers to accommodate large crankshaft fillets
Includes both upper and lower bearing halves
Technical Details
Bearing Type: Main Bearings
Size: Standard (STD)
Tunnel Diameter: 63.659 – 63.672 mm
Shaft Diameter: 59.962 – 59.975 mm
Max Wall Thickness: 1.834 mm
Max Length: 19.00 mm
Half Type: Upper and Lower
Weight: 0.33 kg
Fitment Information
Designed for Nissan 4-cylinder engines using the KA24 family:
KA24E – SOHC 2.4L
KA24DE – DOHC 2.4L
Fits a wide range of Nissan models equipped with these engines, including older trucks (D21), 240SX, Altima, Stanza, and others. Always confirm engine code and journal dimensions before ordering.
What’s Included
(1) Set of ACL Race Series main bearings (upper and lower halves)
