Air and Fuel› Intake Manifolds and Components

APR

Throttle Body Inlet System

$35.82

SKU: MS100198-A

Special Order
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The APR Throttle Body Inlet System is an upgrade for the factory charge pipe system on 2017-2021 Audi RS3 and TTRS models with the EA855 Evo engine. It features a larger, free-flowing system designed to increase airflow by 34% over stock. The system is constructed from cast aluminum and includes a reinforced silicone hose, billet adapter with boost and vacuum reference, and new gaskets and hardware.
Show original supplier description
The APR Throttle Body Inlet System is engineered to replace the factory charge pipe system, extending from the intercooler outlet directly to the throttle body on 2017-2021 Audi RS3 and TTRS models equipped with the 2.5T EA855 Evo engine. This upgrade is designed to provide a significant improvement in airflow, boasting approximately 34% more flow than the stock system. This is achieved through an increased cross-sectional area and a smoother, less restrictive bend radius leading to the throttle body. The system is constructed from a full-length oversized cast aluminum pipe and a multi-ply, wire-reinforced silicone intercooler outlet hose with EZ-flow stepped lips, measuring approximately 72mm at the hose versus the stock 64mm. Key features include the elimination of two potential boost leak points thanks to its single cast design. The billet aluminum throttle body adapter includes a convenient boost and vacuum reference point, suitable for gauges or other accessories. The kit is comprehensive, including new intake manifold and throttle body gaskets, O-rings, and one-time use bolts, which are common sources of leaks often overlooked. Despite its larger size, the complete system adds only a negligible 2.4 lbs over the stock component. Please note that 2019 and newer model year vehicles require the MS100198-A adapter unless the vehicle is already equipped with APR's full intake system featuring the CI100038-G diverter valve adapter.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandAPR
Part NumberMS100198-A
CategoryAir and Fuel
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy