Radium Engineering Baffled Oil Cap | Multiple GM LS Fitments (20-0588)

The LS valve cover's oil fill can breathe without spitting oil, if the cap is baffled.

The Radium Engineering Baffled Oil Cap for GM LS Fitments replaces the factory fill cap: billet aluminum with internal baffling that lets crankcase vapor pass while knocking oil droplets back into the cover, serving the LS platforms whose vent paths route through or near the fill location. Direct fitment on the supported GM LS valve covers.

What You'll Feel

• Oil mist stopped at the cap instead of coating the engine bay
• Breathing preserved where the LS's vent path needs it
• Billet hardware replacing aging plastic on a decades-old platform

Features

• Baffled billet aluminum oil cap for multiple GM LS fitments
• Internal baffling separates oil droplets from passing vapor
• Anodized finish; direct replacement installation

The Details

High-rpm LS use turns the crankcase into a mist generator, and unbaffled fill caps on vented setups become the leak that is not a leak, with oil film creeping from the cap across the cover after every hard session; the baffle's tortuous path ends it, droplets impinging and draining back while vapor continues on. The cap pairs naturally with Radium's LS catch can architecture, handling the fill-point breathing while the cans manage the main circuits. Verify your valve cover style against Radium's fitment listing before ordering.

Kit Includes

• 1x Baffled billet oil cap (20-0588)

Applications

• Multiple GM LS fitments per Radium's listing (verify valve cover style)