AEM Water Methanol Reservoir Cap

SKU: 30-4508 / UPC: 090127863831

AEM Water/Methanol Reservoir Cap

The AEM Water/Methanol Reservoir Cap for enthusiasts seeking reliability and seamless integration. Designed by AEM Performance Electronics, this replacement cap ensures a secure, leak-free seal for your water/methanol reservoir, maintaining system integrity for consistent performance in high-performance vehicles. Crafted with precision, this cap is the go-to solution for racers and tuners who demand quality and dependability in their forced induction or high-compression naturally aspirated setups.

Why Choose the AEM?

The AEM 30-4508 Reservoir Cap stands out as the best fit for maintaining the functionality of your AEM Water/Methanol Injection System. Engineered to meet AEM’s rigorous standards, this cap is a direct replacement for the original component, ensuring a perfect fit and hassle-free installation. Unlike generic aftermarket alternatives, this cap is specifically designed to work with AEM’s 1.15-gallon and 5-gallon reservoirs, guaranteeing compatibility and performance. Its robust construction resists corrosion and wear, even when exposed to methanol mixtures, making it a reliable choice for long-term use in demanding environments.

What’s Included in Your Purchase?

• AEM Water/Methanol Reservoir Cap (SKU: 30-4508, UPC: 090127863831): A single, high-quality replacement cap designed for AEM’s water/methanol injection system tanks.
• No Additional Hardware: This is a standalone replacement cap, ready for installation on compatible AEM reservoirs.

Fitment Specifications

The AEM 30-4508 Reservoir Cap is designed exclusively for AEM Water/Methanol Injection Systems, specifically compatible with the following AEM tank part numbers:

• 30-3320: AEM V2 Water/Methanol Injection Tank Kit (5-Gallon Capacity)
• 30-3325: AEM 1.15-Gallon Water/Methanol Injection Tank

Associated Kits: Compatible with AEM Water/Methanol Injection Kits, including but not limited to:

• 30-3300 (Boost Dependent Controller, up to 35 PSI)
• 30-3301
• 30-3302 (No Reservoir)
• 30-3304 (Standard Controller)
• 30-3350 (Multi-Input Controller for ultra-high boost or naturally aspirated engines)
• 30-3351 (Multi-Input Controller with 5-gallon tank and two injectors)

Vehicle Compatibility:

This cap is not vehicle-specific but is designed for use with AEM’s water/methanol injection systems installed on:

• Forced induction (turbocharged or supercharged) gasoline-powered race engines.
• High-compression naturally aspirated gasoline engines.
• Vehicles using AEM Water/Methanol Injection Kits for performance tuning, regardless of year, make, or model, provided the system includes an AEM 1.15-gallon or 5-gallon tank.

Note: For optimal performance, AEM recommends using an inline filter (PN 30-3003) with all water/methanol injection systems to ensure clean fluid delivery. For systems where the tank is mounted higher than the injection nozzle, consider adding the AEM High-Flow Low-Current WMI Solenoid (PN 30-3326) to prevent unintended flow.

Technical Specifications

• Material: Durable, corrosion-resistant materials compatible with up to 50% methanol mixtures, ensuring longevity in harsh environments.
• Design: Precision-engineered to provide a secure, leak-free seal for AEM’s water/methanol reservoirs.
• Compatibility: Direct replacement for caps on AEM 1.15-gallon (PN 30-3325) and 5-gallon (PN 30-3320) tanks.
• Part Number: 30-4508
• UPC: 090127863831
• Weight: Approximately 0.2 lbs (estimated, as exact weight is not specified by the manufacturer).
• Shipping Dimensions: Approximately 4” x 4” x 2” (estimated based on compact size for a reservoir cap; exact dimensions not provided by AEM).
• Manufacturer: AEM Performance Electronics, known for high-quality automotive aftermarket products.
• Warranty: One-year limited warranty, applicable to the original customer and non-transferable. Improper use or installation voids the warranty.

Performance and Reliability

The AEM 30-4508 Reservoir Cap is critical for maintaining the integrity of your water/methanol injection system, which is proven to reduce engine inlet air temperatures and suppress detonation in forced induction or high-compression engines. By ensuring a secure seal, this cap prevents leaks that could compromise system performance, allowing racers to confidently increase boost and advance ignition timing for power gains of up to 20% without relying on high-octane racing fuel. Its compatibility with AEM’s robust hardware, such as the 200 PSI recirculation pump and conductive low-fluid level sensors, ensures seamless operation in high-performance applications.

Installation and Maintenance

Installation is straightforward, requiring no special tools. Simply remove the old cap and secure the 30-4508 cap onto the compatible AEM reservoir. For best results, inspect the reservoir’s sealing surface for debris before installation to ensure a tight seal. AEM recommends using no more than a 50% methanol concentration to maintain compatibility with system components, including this cap.

Manufacturer Details

AEM Performance Electronics, a leader in automotive aftermarket innovation, designs the 30-4508 cap to meet the needs of performance enthusiasts. This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles, as it does not affect vehicle emissions and is not covered by emissions regulations.

Customer Confidence

Choose the AEM 30-4508 Reservoir Cap for its proven compatibility, durable construction, and seamless integration with AEM’s water/methanol injection systems. Whether you’re upgrading a damaged cap or maintaining your system, this cap delivers the reliability needed for high-performance tuning. Don’t settle for less trust AEM for precision-engineered components that keep your vehicle running at its best.