N-107-394-01 Genuine VW/Audi Vacuum Pump Retaining Screw

Genuine VW/Audi vacuum pump retaining screw, part number N-107-394-01. This original fastener secures the vacuum pump in its assigned engine mounting position on the later CBFA arrangement shown below. The engine code and June 1, 2012 production change are essential selection details.

Technical details

• Original number: N-107-394-01 / N10739401.
• Published nominal thread diameter: M6.
• Original fastener with internal multi-point drive and collar beneath the head.
• Application: assigned vacuum pump mounting position on the specified CBFA engine arrangement.
• The cataloged pump attachment uses three screws; this listing supplies one screw.
• Vacuum pump, mounting seal and other hardware are separate.

The vacuum pump mounting connection holds the pump seated against its assigned engine interface. Correct hardware selection supports proper positioning, while the separate pump seal provides sealing at its mating surface.

The same model and engine displacement can have different vacuum-pump fasteners. For the listed GTI application, earlier CBFA production and CCTA engines use different hardware. Confirm the original screw number, engine code and build date before ordering.

Common reasons to replace

Replacement may be required during vacuum pump removal or replacement when the factory procedure calls for new mounting hardware. Replace damaged threads, a damaged internal drive recess, deformation, missing hardware or corrosion affecting reliable installation.

Vacuum-pump sealing work can reveal damaged screws or incorrect substitutes left by earlier repairs. Inspect the mounting connection and obtain the correct fasteners and separately required seal before reassembly.

Oil seepage near the pump, vacuum-related faults or reduced brake assistance require diagnosis of the complete pump, sealing interface, hoses and associated system. A new retaining screw cannot repair an internally defective pump, damaged seal, leaking vacuum line or compromised mounting thread. Correct the diagnosed issue before completing the attachment.

Installation and service notes

Follow the factory vacuum-pump procedure for the exact CBFA arrangement. Prepare the engine and disconnect associated hoses or components as prescribed. Keep dirt and loose hardware away from the exposed pump interface and oil passages.

Identify the assigned N10739401 positions and inspect the mounting surfaces and threaded holes. Use the correct new seal wherever the procedure calls for replacement. Position the pump according to the repair instructions rather than forcing it into place with the mounting screws.

Start each screw by hand in undamaged threads. Use a fully seated bit that matches the internal drive recess, and tighten the complete connection in the prescribed sequence so the pump seats normally.

Apply the factory torque and any additional angle for this exact attachment, together with the required thread preparation and hardware replacement rules. Do not infer torque from M6 or transfer a value from the earlier pump screw.

Reconnect the original vacuum hoses and components, then perform the required sealing, vacuum-system and operating checks after assembly. Confirm proper brake assistance according to the prescribed service checks before returning the vehicle to use.

This listing supplies one original retaining screw. Select the required quantity and any additional pump seals or components separately for the repair.

Fitment

Confirm the original screw number, CBFA engine code and vehicle build date before ordering. One screw supplied.