N-910-766-01 Genuine VW/Audi Knock Sensor Bolt - M8 x 30 mm

Genuine VW/Audi knock sensor mounting bolt, part number N-910-766-01. This original fastener secures the knock sensor at the specified engine mounting position. Its published nominal size is M8 x 30 mm. One bolt is supplied; the reference photograph shows two bolts to illustrate their features.

Technical details

• Original number: N-910-766-01 / N91076601.
• Published nominal metric thread diameter and length: M8 x 30 mm.
• Internal triple-square drive and cylindrical head, as pictured.
• Confirmed application: specified knock sensor attachment.
• Knock sensor, wiring and other hardware are separate.

A knock sensor monitors engine vibration for the engine management system. Its prescribed mechanical attachment is part of the sensor's installation. The correct fastener and tightening procedure must be used; a general bolt with a matching thread diameter is not sufficient verification.

This bolt is attachment hardware rather than an electrical sensor. It does not change the sensor's calibration or replace its wiring. Confirm the original bolt number and mounting position when servicing the sensor.

Common reasons to replace

Inspect this bolt when removing the knock sensor or performing related engine service. Replace damaged threads, a rounded triple-square drive, corrosion affecting seating or a visibly bent fastener. Renew removed bolts when required by the applicable factory procedure.

Previous repairs may leave an incorrect bolt or an improperly seated sensor. Compare the original fastener specification and inspect the mounting arrangement before ordering. A bolt that threads into the mounting point is not proof of correct length or installation.

Knock sensor faults and related running concerns require diagnosis of the sensor circuit and engine condition. A new bolt cannot repair an electrically failed sensor, damaged wiring, a contaminated connector or a damaged engine mounting surface.

If the sensor attachment is loose or incorrect, inspect the complete assembly and determine the cause before reinstallation. Address damaged mounting threads or an unsuitable sensor rather than trying to compensate with additional tightening.

Installation and service notes

Follow the factory procedure for the exact engine and installed knock sensor. Identify the correct attachment position before removal. Follow the prescribed electrical disconnection and access steps for components disturbed during the repair.

Inspect the sensor mounting area, sensor and threaded hole before assembly. Prepare the contact surfaces only as prescribed. Do not insert unapproved washers, spacers, sealants or other material into the sensor's mounting arrangement.

Position the correct sensor as required and start the bolt by hand. Stop if the bolt binds before seating and recheck alignment, thread condition and part selection. Do not force the fastener into a damaged mounting point.

Use the correct fitting triple-square bit, fully engaged in the drive recess. Keep the tool aligned with the bolt so the internal drive is not damaged during installation.

Use the exact sensor mounting torque specified for this engine. Tightening is part of correct sensor installation; no universal torque value is supplied. Apply lubricant or thread locking compound only if the factory procedure explicitly calls for it.

Route and reconnect the sensor wiring as prescribed, keeping it clear of heat and moving components. Check that connectors and any surrounding components removed for access are properly installed.

Complete the required diagnostic and operating checks after assembly. A fault that remains requires further diagnosis rather than repeated bolt tightening. This listing supplies one mounting bolt, even though two are shown in the original reference image.

Fitment

Confirm N91076601 at the specified knock sensor attachment. One bolt supplied.