Breather Grommet 1in ID

The Breather Grommet 1in ID from Billet Specialties is a precision-engineered rubber seal designed to manage crankcase ventilation in engine systems. With a 1-inch inner diameter, 1.38-inch outer diameter, and 0.645-inch thickness, this component provides a reliable interface between breather lines and engine block fittings. The grommet's black rubber construction offers resilience to temperature fluctuations and light chemical exposure typical in engine bay environments.

Engine crankcase ventilation requires components that maintain airtight seals while accommodating engine vibration and thermal cycling. The 0.645-inch thickness of this breather grommet provides sufficient material density to resist compression set over time, ensuring consistent performance across repeated thermal cycles. The rubber material resists degradation from mild oils and vapors encountered in typical crankcase applications, extending service life between maintenance intervals.

This grommet is suited for builders and technicians restoring or assembling engines where original breather fittings require replacement seals. It's commonly used in hot rod, classic car, and performance engine builds where stock breather systems are modified or upgraded. The 1-inch ID accommodates standard breather hose diameters found on many small-block and mid-size engine platforms.

Billet Specialties manufactures precision engine components for the automotive aftermarket. Each grommet is sold individually, allowing builders to source exact quantities for their specific application.