Upgrade the crankcase-ventilation system on a 2025-2026 L5P/L5D Duramax with a kit designed around the newer crankcase-pressure sensor. VSE's CCV block moves the sensor away from direct oil spray while its passive separation features help reduce oil carryover into the intake.

• Includes a CCV block with a pressure-sensor port.
• Relocates the oil-fill point using a separate fill tube and cap.
• Supplied with reroute hose, fittings, seals, mounting hardware and extractor bit.
• Includes a boost block-off plate.

Application notes: Maintain the specified closed crankcase-ventilation routing. VSE states that venting the 2025+ system to atmosphere causes a P04DB fault and reduced-power operation.