Water/Methanol Injection Filter

The AEM Water/Methanol Injection Filter (Model 30-3003) is a critical inline component designed for performance tuning systems that employ water-methanol injection to cool intake charge temperatures and prevent engine detonation. This filter protects high-performance and turbocharged engine systems by removing contaminants and particulates before injection fluid reaches fuel injectors or spray nozzles. Water-methanol injection has become standard in competitive motorsports and advanced tuning applications where maximum horsepower and reliability are non-negotiable.

This in-line filter features a 40-micron element that effectively traps rust, sediment, and particulates that could otherwise clog or damage injection nozzles and disrupt spray patterns. The all-plastic construction with black finish resists corrosion from alcohol-based injection fluids, while the dual 1/4-inch NPT female ports (inlet and outlet) provide universal compatibility with standard AEM Water Injection Systems and most aftermarket injection setups. The compact, lightweight design (0.28 lbs) integrates seamlessly into engine bays without adding bulk, and the 40-micron filtration threshold strikes an optimal balance between flow rate and contaminant removal for consistent system performance across varying load and boost conditions.

Buyers upgrading or maintaining water-methanol injection kits—whether on turbocharged street cars, forced-induction platforms, or track-focused builds—benefit from this filter's preventive protection against premature nozzle wear and spray degradation. Installation is straightforward on any system using 1/4-inch NPT fittings, and periodic element replacement ensures long-term system reliability. For anyone serious about protecting a significant investment in injection hardware, this AEM filter is essential maintenance.