Airtex mechanical fuel pumps are designed to meet or exceed OEM specifications for fit and performance. Precision castings and hardened rockers help ensure a long life. Advanced polymer pump diaphragms help ensure consistent performance in multiple fuel blends. A new fuel filter is recommended when replacing. Product Features: Coverage for classic, performance and non-fuel-injected vehicles, 100% factory tested. Every single pump is 100% tested throughout the entire manufacturing process for worry free, out of the box performance.