Milltek HJS ECE Downpipe - Audi S4 B9 3.0 Saloon / Sedan / Avant 2016-2025

QT Parts is a Finnish online store.

Our warehouse is located in Nokia, Finland.

You can collect your order directly from us if needed. Simply select “Pickup” at checkout.

Pay securely with multiple payment methods, including invoice and installment plans through Klarna.

The delivery time for products in stock is 1-3 business days.

If the product is not in stock and it is a pre order product, the average delivery time is 5-21 business days. If the product has a longer delivery time than previously announced, we will be in touch.

Terms for product returns:

• You must return the ordered products within 14 days of receiving
• The products must be unused and without damages
• Commission fee for handling returns is 21,90€
• For product returns, the customer is in charge of the return costs. Only door to door service (Express)
• Shipping costs are not refunded

For international orders (outside of Europe) sales are final and non-refundable. Once an order is placed, it cannot be canceled or returned. By placing an order, you acknowledge and agree to these terms.

Return address: QT Parts, Vasarakatu 8B, 37150 Nokia, Finland.

Pre order / made-to-order products

If the product you have ordered is a pre order or made-to-order item, it is not subject to the 14-day right of withdrawal or return under consumer protection laws, as the product is manufactured or sourced specifically based on the customer’s individual order.

If you wish to cancel your order before receiving the product, we will refund 50% of the total order amount.

This condition applies to the following product categories:

• Suspension
• Engine Tuning
• Engine Parts
• Exhaust Systems
• Fueling
• Turbochargers/superchargers
• Drivetrain
• ECE-approved Downpipes

All of the above products are manufactured or sourced individually based on the customer’s order, and therefore cannot be returned after delivery, unless the product has a manufacturing or material defect.

In the event of such a defect, the standard liability for defects as provided by consumer protection legislation shall apply.

The Milltek HJS Tuning ECE-approved downpipe exhaust system is designed for Audi S4 B9 models with a 3.0-liter turbocharged V6 engine without Sport Diff equipment.

The design, equipped with HJS catalytic converters, improves flow and exhaust gas removal, which supports efficient engine operation and produces a distinctly sportier sound. However, the tone remains controlled and pleasant even when driving on the road.

Features

• Deeper and fuller sound at idle

• Sporty sound as the load increases

• No annoying resonance or drone when driving on the road

• HJS ECE approved catalytic converters for road use

• Made of high quality stainless steel

• Direct bolt-on installation to original mounting points

• Choose LHD (left-hand drive) or RHD (right-hand drive) depending on your car

The Milltek HJS downpipe solution offers the Audi S4 better flow capacity and a sportier sound, while maintaining road legality.

Fit

Audi S4 B9 Sedan
Audi S4 B9 Avant
3.0 Turbo V6
Non Sport Differential & Sport differential models
Model years: 2016+