APR Throttle Body Inlet System MS100198

If you're looking to enhance the performance of your 2019-2021 Audi A4, A5, S4, or S5, the APR Throttle Body Inlet System (part number MS100198) is a game changer. This system is designed as a complete upgrade to the factory charge pipe setup, taking you from the intercooler outlet directly to the throttle body. With this upgrade, you can expect a flow increase of approximately 34% over stock, thanks to a larger cross-sectional area and a smarter design that reduces tight bends.

Why Upgrade?

The factory system has its limitations, including potential boost leak points. The APR system eliminates these concerns with a single cast design that integrates all components seamlessly. This means fewer points of failure and more reliable performance. Plus, the upgraded multi-ply wire-reinforced silicone intercooler outlet hose features strong t-bolt clamps that effectively resist boost leaks, giving you peace of mind while you push your vehicle to its limits.

Installation and Compatibility

Installing the APR Throttle Body Inlet System is straightforward, and it comes complete with everything you need, including new throttle body and intake manifold gaskets. This addresses common leak points that many enthusiasts overlook. The system's billet throttle body to manifold adapter also provides a handy boost and vacuum reference point, perfect for those looking to add gauges or other components to their build.

Technical Specs

• Flows 34% more than stock
• Full system from intercooler to throttle body
• Oversized cast aluminum throttle body pipe with sweeping transitions
• Eliminates 2 boost leak points
• Multi-ply wire-reinforced fluorosilicone-lined intercooler outlet hose
• Hose diameter: 72mm vs 64mm stock
• Billet aluminum throttle body adapter with boost and vacuum reference points
• High-strength t-bolt clamps
• Includes new intake manifold gasket, throttle body gaskets, o-rings, and one-time use bolts
• CNC-bent and laser-cut mounting bracket
• Silicone diverter valve reroute hose
• Comes with full installation instructions and APR support

Customer Feedback

A 2020 Audi S4 owner shared, “After installing the APR throttle body inlet, I noticed an immediate improvement in throttle response. The larger diameter really makes a difference, and I love that I don’t have to worry about boost leaks anymore.”

In summary, the APR Throttle Body Inlet System MS100198 is not just an upgrade; it's a comprehensive solution that enhances airflow and reliability for your 2019-2021 Audi A4, A5, S4, or S5. With its thoughtful design and quality materials, this system is the only throttle body inlet you'll ever need.