Push-In Breather Grommet

The Push-In Breather Grommet by TRANS-DAPT is a precision-engineered rubber component designed to seal and manage crankcase ventilation in engine systems. Built for technicians and engine builders who demand reliable, OEM-quality breather solutions, this grommet serves as a critical interface between engine block ports and breather hoses. Whether you're assembling a high-performance engine, restoring a classic vehicle, or maintaining existing drivetrain components, a properly functioning breather grommet prevents pressure buildup and protects internal seals from moisture and contamination.

Manufactured from durable black rubber, the Push-In Breather Grommet features a 1-inch inner diameter and 1.25-inch outer diameter, with a 1.23-inch thickness that ensures secure engagement and reliable compression fit. The push-in design eliminates the need for fasteners or adhesives—simply insert the grommet into the designated port for an immediate, leak-free seal. TRANS-DAPT's engineering ensures the rubber compound maintains resilience across temperature and pressure cycles, resisting degradation from oil vapor and engine heat while maintaining consistent sealing performance over extended service intervals.

This breather grommet is ideal for small-block and mid-size engine applications where aftermarket breather systems or custom intake manifold configurations require precise port sealing. Technicians favor it for engine rebuilds, custom engine swaps, and performance modifications where OEM grommets are unavailable or incompatible. The compact 2.75 x 1.4 x 3.65-inch profile and lightweight design (0.05 lbs) make installation straightforward, and the standardized 1-inch bore accommodates common hose sizes used in PCV and breather line assemblies. Verify your engine's port diameter and breather system configuration before ordering to ensure compatibility with your specific application.