HPS Performance Products AW4 Aluminum Crush Washer - AN-4

The HPS Performance Products AW4 is a high-quality aluminum crush washer designed for AN-4 fittings. These precision-engineered washers create a reliable seal in high-pressure fluid system applications, making them essential components for performance automotive, racing, and motorsports plumbing installations.

Key Features:

• AN-4 size specification for proper fitting compatibility
• Constructed from high-grade aluminum for optimal sealing performance
• Compatible with water, coolant, air, oil, and most fuel types
• Engineered for high-pressure applications
• Single-use design ensures proper crush and seal with each installation

Crush washers are designed to deform when tightened, creating a secure, leak-free seal between AN fittings and their mating surfaces. The soft aluminum construction allows the washer to conform to minor imperfections in the sealing surfaces while maintaining integrity under pressure. Always use a new crush washer when reassembling fuel, oil, or coolant connections to ensure maximum reliability.