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RADHAUS 95B.1 Macan Coolant Vent Line Bypass Kit

For 2015–2018 Porsche Macan 3.0L & 3.6L (95B.1)

A Better Solution for a Known Macan Weak Point

The 2015–2018 Porsche Macan 3.0L and 3.6L models are known to develop coolant leaks from the factory coolant vent line (OEM Part #946-106-026-060). The original component is made entirely of plastic, which becomes brittle over time from heat cycles and age.

Eventually, this can lead to cracking or complete failure, resulting in a significant coolant leak.

Some owners notice the smell of coolant early and catch the problem before the line ruptures. Others aren’t as fortunate—many have experienced sudden coolant loss, dashboard warnings, and roadside breakdowns when the line fails completely.

If your Macan has around 60,000 miles or more, this component should be considered preventative maintenance. If you are currently experiencing a coolant leak, this line is often one of the first components worth inspecting.

Why the Factory Repair Is Difficult

The factory vent line runs from two accessible fittings at the front of the engine, then travels under the intake manifold to the rear of the engine, before finally connecting to the coolant reservoir.

Because of this routing, the factory repair procedure requires removal of the intake manifold, making it a labor-intensive and expensive job.

The RADHAUS Solution

The RADHAUS 95B.1 Coolant Vent Line Bypass Kit replaces the unreliable plastic components with durable, high-quality materials designed to outlast the life of your Macan.

Instead of routing the line under the intake manifold, this kit re-routes the vent line across the front of the engine, allowing it to connect directly to the factory coolant reservoir port.

Best of all — the intake manifold does NOT need to be removed.

While space is still somewhat limited, installation is now far faster and significantly less complicated, saving substantial labor time.

Most customers report DIY installation times of 1–2 hours, often saving hundreds of dollars in shop labor costs.

Kit Features

This plug-and-play kit includes:

- Custom CNC-machined aluminum fittings with black anodized finish

- Aluminum T-fittings

- High-temperature silicone coolant tubing

- OEM-style quick-connect fitting for the coolant reservoir

Proven Design

Inspired by the ingenuity of the Macan enthusiast community, rerouted coolant vent lines have been circulating in DIY form for years. The RADHAUS kit builds on that concept by eliminating the weaknesses of earlier solutions and creating a purpose-built, fully engineered kit.

Since its launch, the RADHAUS 95B.1 Coolant Vent Line Bypass Kit has now been installed on several hundred Macans, collectively logging hundreds of thousands—if not millions—of miles of real-world use. Earlier versions of this design have been in service for several years and continue to perform reliably today.

Unlike early DIY approaches that required owners to cut and reuse the original plastic fittings, the RADHAUS kit eliminates those fragile components entirely by replacing them with durable aluminum fittings and high-temperature silicone tubing.

We also stand behind this solution by using it ourselves — this exact setup is installed on our own in-house Macan Turbo, where it continues to perform exactly as intended.

We design and test our products the same way our customers use them, and that commitment has helped RADHAUS earn a reputation as a trusted and respected name in the Macan enthusiast community.

Important Notes & Legal Disclaimer

THIS PRODUCT IS AN AFTERMARKET PART AND IS NOT MANUFACTURED, APPROVED, OR ENDORSED BY PORSCHE. INSTALLATION AND USE OF THIS PRODUCT IS AT YOUR OWN RISK.

By purchasing, installing, or using this product, the purchaser and/or installer acknowledges and agrees that RADHAUS, LLC, including its owners, members, employees, affiliates, and representatives, shall not be held liable or responsible for any damages, losses, costs, or injuries of any kind arising from or related to the installation, use, misuse, or inability to use this product.

This includes, but is not limited to, vehicle damage, mechanical failure, personal injury, property damage, incidental damages, consequential damages, or any other losses that may occur directly or indirectly as a result of the installation or use of this product.

The purchaser and/or installer assumes all risks and responsibilities associated with the installation and use of this aftermarket product. Proper installation procedures and manufacturer-recommended service procedures should be followed at all times.

Improper installation, modification, misuse, or failure to follow proper service procedures may result in vehicle damage, personal injury, or other losses.

RADHAUS, LLC makes no guarantees or warranties, express or implied, regarding the compatibility, performance, or fitness of this product for any particular purpose. Installation of aftermarket parts may affect vehicle warranties and compliance with local regulations.

By purchasing, installing, or using this product, the purchaser and/or installer acknowledges and accepts full responsibility for any outcomes associated with its installation and use, and agrees to release, hold harmless, and indemnify RADHAUS, LLC from any and all claims, liabilities, damages, losses, or expenses arising from or related to the use of this product.

This disclaimer also applies to any claims related to warranty, emissions compliance, regulatory issues, or resale value.

International Orders

Orders outside the United States:
Your country may assess import duties or taxes on your shipment. These charges are the responsibility of the buyer and may need to be paid to the carrier prior to delivery.

RADHAUS has no control over these fees, so please research potential import costs before placing your order.