Spool Performance AMG C63 [M177] Spool FX-350 Upgraded High Pressure Pump Kit

The Spool Performance FX-350 is a game-changer for Mercedes AMG C63 owners looking to enhance their engine’s fueling capacity and maximize performance. Engineered for high-performance applications, this high-pressure fuel pump delivers superior pressure and flow, making it the ultimate upgrade for those seeking more power and efficiency from their M177 engines.

The FX-350: Next-Level High-Pressure Pump

The FX-350 outperforms the previous FX200 model by delivering an impressive 35Mpa of fuel pressure—40% more fuel flow through the injectors—allowing for higher performance without maxing out the injection window. This advanced system increases fuel atomization, leading to more efficient combustion and better throttle response, improved power output, enhanced fuel economy, and reduced emissions.

Why You Need the FX-350

The stock HPFP on M177 motors has limited fueling capacity, making it challenging to boost engine output. The FX-350 kit raises the fueling limits by adding 90% more flow, ideal for supporting larger turbos and higher ethanol concentration blends.

Key Features:

• Enhanced Fuel Pressure: Delivers 35Mpa for a 40% increase in injector fuel flow
• Improved Fuel Atomization: Finer fuel droplets for better combustion, leading to more power and efficiency
• 90% More Flow: Allows for tuning with larger turbos and higher ethanol blends

Kit Includes:

• 2 x FX-350 upgraded high-pressure fuel pumps
• Bosch spec 10-micron high-flow fuel filter
• Upgraded fuel lines and all necessary hardware
• Spool Ethanol Content Monitor (optional), with a mobile app

Spool Ethanol Content Monitor & 10-Micron Filter Unit

The optional Ethanol Content Monitor offers real-time fuel composition and temperature readings via Bluetooth using the Spool Ethanol Analyzer app. The included 10-micron filter unit ensures the highest level of filtration without pressure drop, protecting your pump and injectors from debris.

Tune Requirements & Support

The FX-350 pumps require calibration changes before installation to avoid damage. Spool Performance provides calibration assistance to your tuner and helps connect you with experienced professionals to achieve maximum output.

Low Pressure Fuel Pump Upgrade

For optimal results, ensure proper low-pressure fueling to maintain pump health and performance. Insufficient low-pressure fueling can lead to damage, which would void the warranty.

Note: 'New' merchandise may be returned for exchange or refund within 15 days from the date of shipment. 'New' merchandise must be unused and free from installation or mounting damage. Installation or modification of parts waives your right to returns, refunds, or exchanges.