ACL Race Series Standard Main Bearing Set for GM LS Gen III–IV 4.8L, 5.3L, 5.7L and 6.0L V8 Engines – 5M7298H-STD

GM LS Gen III - IV main bearing set 270 degree oil groove - Standard

Upgrade the foundation of your GM LS engine with the ACL Race Series 5M7298H-STD standard-size main bearing set. Designed for GM LS Gen III and Gen IV V8 applications, this main bearing set is compatible with popular 4.8L, 5.3L, 5.7L and 6.0L engines. It features a 270-degree oil groove configuration intended to support effective crankshaft lubrication under demanding operating conditions.

ACL Race Series bearings are engineered for performance-oriented engine builds, offering precise fitment and dependable wear resistance when installed with properly prepared, standard-size crankshaft journals. The bearing construction is designed to help maintain consistent oil control and support stable engine operation across street, performance and racing applications. This set is a practical choice for engine rebuilds, refreshes and performance upgrades where reliable main bearing support is essential.

Before installation, verify crankshaft journal measurements, housing bore condition and engine-specific fitment. The 5M7298H-STD is a standard-size application and should not be used to compensate for machined or undersized journals. Proper clearance checks, lubrication and installation procedures are required to achieve the intended performance and service life. The set includes the main bearing components needed for one compatible engine application.

Key Product Specifications and Technical Data

• Brand: ACL
• Part Number: 5M7298H-STD
• Application: GM LS Gen III–IV V8 engines
• Compatible Displacements: 4.8L, 5.3L, 5.7L and 6.0L
• Bearing Type: Main bearing set
• Oil Groove Design: 270-degree oil groove
• Size: Standard
• Product Category: Automotive engine bearing component

What's Included

One ACL Race Series standard-size main bearing set for compatible GM LS Gen III and Gen IV engine applications.

Features:

• Standard-size main bearing set for compatible GM LS Gen III and Gen IV V8 engines
• 270-degree oil groove design supports consistent crankshaft lubrication
• Fits selected GM 4.8L, 5.3L, 5.7L and 6.0L engine applications
• ACL Race Series construction is engineered for dependable performance in street, performance and racing builds

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1