Air Turbocharger Pipe Hose Rear Duct with Sensor for BMW 535i, 640i, 740i, X5 & X6 3.0L

Air Turbocharger Pipe Hose Rear Duct with Sensor for BMW 535i, 640i, 740i, X5 & X6 3.0L

This is an air turbocharger pipe hose, rear duct, with integrated sensor, cross-referenced to OE number 13717609811, built for the BMW 535i, 640i, 740i, X5, and X6, all with the 3.0L engine. If you've noticed a hissing or whistling sound under boost, a loss of power, or a check engine light related to boost pressure, a cracked or leaking turbo duct is a common cause on these BMWs.

Why This Duct Includes a Sensor

Unlike a simple length of hose, this rear duct integrates the sensor that helps the engine's computer monitor boost pressure or airflow at this specific point in the intake system, which is why a cracked or leaking duct here doesn't just cause a vacuum leak, it can also feed inaccurate readings back to the engine management system. Replacing the duct and sensor together as a single unit, rather than trying to salvage the old duct with a patched sensor, restores both the physical seal and the accuracy of the readings it feeds back to the engine.

Key Features

• Cross-referenced to OE number 13717609811
• Integrated sensor for accurate boost or airflow monitoring
• Built to handle the pressure and heat of turbocharged intake air
• Direct-fit replacement designed to restore a proper seal

Specifications

• Type: Air turbocharger pipe hose, rear duct, with sensor
• OE number: 13717609811
• Quantity: 1 duct assembly
• Manufacturer warranty: 1 year
• Condition: New

Compatibility

Built for the BMW 535i, 640i, 740i, X5, and X6, all with the 3.0L engine. Because BMW's compatibility data isn't always exact across trims and production years, it's worth confirming the OE number above against your original part or reaching out with your VIN before ordering to help guarantee a correct fit.

Signs Your Turbo Duct Needs Replacing

A hissing or whistling noise that gets louder under acceleration, a noticeable loss of boost or power, or a check engine light tied to boost pressure or intake air readings are all signs of a cracked or leaking duct in the turbo intake system. Because these ducts sit right in the path of pressurized, heated air, they tend to degrade gradually with age and heat cycling rather than failing without warning.

Why Addressing a Leak Here Matters

A leak in the turbo intake system means the engine isn't getting the boost pressure it's expecting, which the engine computer typically compensates for by adjusting fuel delivery, often at the cost of power and fuel economy. Left unaddressed, a leaking or disconnected sensor can also trigger fault codes or a check engine light that make it harder to diagnose other, unrelated issues down the line.

Installation Notes

Installing this duct means accessing the turbo intake piping, disconnecting the sensor's electrical connector, releasing the clamps securing the old duct, and installing the new duct and sensor in reverse order. Because a loose clamp or an improperly seated sensor connector can reintroduce the same symptoms you're trying to fix, double-checking both connections before finishing the job is worth the extra few minutes. Starting the engine and listening closely for any hissing near the new duct before considering the job finished is a simple way to catch a loose clamp right away rather than discovering it later on the road.

Ordering Information

This turbo duct is in stock and ships ready to install. Our Shipping Information page covers current timelines, and our Warranty and Returns pages explain what to do if anything isn't right on arrival. Not sure this matches your specific BMW and trim? Our Request a Part page is the fastest way to confirm before you order.

Related Parts

This turbo duct is listed in our BMW collection, along with our Turbochargers & Performance collection, where you'll find other forced-induction components.