Original BMW Straight-Outlet Swirl Port Media Blasting Wand for BMW 335d (2009–2011) and X5 xDrive35d (2009–2013)

Original BMW part 81-29-2-356-970 is a straight-outlet media blasting wand for the swirl port, one of the wands used in BMW's walnut blasting kit to clean carbon from the intake valves of the M57 diesel in the BMW 335d and X5 xDrive35d. Diesel BMWs tend to build carbon deposits on the intake valves over time. Walnut blasting removes that buildup physically with crushed walnut shell media instead of strong chemicals. BMW also calls this piece a media blasting head, and it is made in Germany.

Original BMW Parts carry a 24-month parts warranty.

The kit uses several different wands, each shaped for a particular port, and this one has a straight outlet for the swirl port. A blasting wand is the nozzle end of the setup, carrying media from the blaster into the port so the abrasive reaches the valve rather than spraying loose in the engine bay. Cleaning the valves this way helps restore performance and extend the life of the M57 engine. Check the outlet shape and port against the wand you are replacing before ordering.

Technical Details

• Manufacturer: BMW (Original BMW Parts)
• Part number: 81-29-2-356-970
• Part name: media blasting head
• Application: swirl port, straight outlet
• Function: directs walnut blasting media into the intake port
• Engine: M57 diesel
• Country of manufacture: Germany
• Sold as: a single wand, not a complete kit
• Warranty: 24-month Original BMW parts warranty

Common Questions

Is this a complete walnut blasting kit?
No. It is one wand from the kit, made for the swirl port with a straight outlet.

Why walnut blast a diesel BMW?
The intake valves on these diesels collect carbon deposits, and walnut blasting removes them physically.

Is this a genuine BMW part?
Yes. It is an Original BMW part made in Germany and covered by the 24-month parts warranty.

Fitment & Compatibility

Use the fitment table below to confirm year, make, model, submodel, and any notes tied to your exact vehicle. Pay close attention to engine, chassis, position, and option-specific details before ordering. PMB Performance can confirm this against your VIN, backed by more than 20 years of parts and fitment work.