Radhaus Coolant Vent Line Bypass Kit (Cayenne S/ GTS V6 958.2)

2026-03-26T16:45:52-04:00

Vendor: Radhaus
Type: Engine
Price: 295.00

Designed to Fit

2015 - 2018 Cayenne S 3.6 V6

2015 - 2018 Cayenne GTS 3.6 V6

Product Details

Modern V6 Porsche’s have been plagued by a coolant leak issue. This kit completely replaces OEM Part 946-106-026-060. The original part is entirely plastic, which will inevitably become brittle and damaged with age and heat cycles from the engine. This can cause a catastrophic leak. Lucky owners will smell coolant and catch this leak before the line completely ruptures. Others have been stranded roadside with a completely empty coolant reservoir and urgent warnings from the car to cease driving to prevent engine damage.

If your vehicle has ~60k miles or more, this may be considered an item for preventative maintenance. If you have a coolant leak, this may be the first part to check.

This important line runs from two accessible fittings on the front of the engine, then underneath the intake manifold to the back of the engine. It then ultimately finds it's way to its appropriate fitting on the coolant reservoir.

RADHAUS Coolant Vent Line Bypass kits replace the unreliable plastic components of the OEM line with parts that are designed to last longer than the life of your vehicle itself. In addition, this kit re-routes the line across the front of the engine, and attaches to the OEM coolant bleeder valve, in place of the original line. Best of all, there is no need to remove the intake manifold. While space is still limited, installation is now much faster and less complicated - saving significant time and labor costs. Most customers have reported DIY install times of 1-2 hours, typically saving hundreds of dollars in labor charges.

Features

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

Install Guide

About Radhaus

After a decade of involvement in the European automobile enthusiast community, RADHAUS was founded in 2020 as a collaborative effort of like-minded enthusiasts with experienced backgrounds in engineering, fabrication, automotive repair/refinishing, and customer service.

For many years prior to our founding, our team has been trusted by clients to design and fabricate bespoke performance parts for numerous applications including Porsche, Audi, VW, BMW, and Volvo. We continue to do this today.

Each unit is built and assembled by hand in the USA, and we are proud to personally use and test our products with our own vehicles before making them available to the rest of the communities that we are happy to support. Our focus on quality and results matter, and our roots in bespoke design and fabrication are evident in every product that we sell.