Michigan Motorsports LS Billet Aluminum Oil Diverter Barbell – Precision Fit Upgrade
 
Fits Gen 3 & Gen 4 LS Engines 4.8L 5.3L 5.7L 6.0L 6.2L 7.0L
 
Upgrade the weak factory plastic oil diverter barbell with this precision-machined billet aluminum replacement designed to dramatically improve oil system integrity and engine protection. The OEM plastic barbell can allow excessive clearance—approximately .020” too loose—permitting contaminants as large as 500 microns to bypass filtration and flow directly to critical engine components.
 
This billet aluminum version is engineered with approximately .001” clearance, limiting particle bypass to roughly 20–25 microns—matching the filtration range of most quality oil filters. That means cleaner oil reaching your cam bearings, lifters, crankshaft, and rod bearings. Combined with improved flow characteristics and service-friendly design, this is a must-have reliability upgrade for any serious LS build.
 
Key Features & Benefits
Precision Billet Construction: CNC-machined aluminum body with approximately .001” clearance dramatically reduces unfiltered oil bypass compared to the factory plastic barbell.
Enhanced Engine Protection: Limits particle bypass to approximately 20–25 microns, helping protect cam bearings, lifters, crankshaft, and rod bearings from premature wear.
Improved Oil Flow: Features a 30% smaller shaft diameter to reduce flow restriction while maintaining proper oil routing throughout the engine.
Service-Friendly Design: Integrated 1/4-20 threaded removal hole allows easy extraction—no more prying or damaging the block during service.
High-Temperature Viton O-Ring: Replaceable Viton seal provides long-term durability and resistance to heat and oil breakdown in demanding applications.
 
Compatible Engines
Fits all GM Gen III & Gen IV LS engines including: LS1, LS2, LS3, L92, LQ4, LQ9 4.8L, 5.3L, 5.7L, 6.0L, 6.2L, 7.0L
If you are building, refreshing, or modifying an LS engine, this billet oil diverter barbell is a simple but critical upgrade to help safeguard your investment and maintain optimal oil control under both street and high-performance conditions.