OVERVIEW
Genuine VW/Audi N-911-450-03 is an individual double-ended stud used at the specified cylinder-head/turbocharger attachment. Exact engine identification and production restrictions matter because similar turbocharger assemblies use different studs.
Technical details and contents
Factory nominal designation: M8 × 22. This describes the functional stud specification, not a shipping measurement. One stud is supplied, with threaded ends and a central transition as shown in the original archive photo.
Factory number: N-911-450-03 / N91145003. Brand: Genuine VW/Audi. Quantity supplied: one individual fastener.
Function and component assignment
The stud provides the assigned threaded attachment between the cylinder-head mounting location and turbocharger assembly. The matching nut, gasket and other mounting hardware perform separate functions and are not included. Preserve the original stud placement and specified projection during assembly.
Common reasons to replace
- The stud is missing or damaged after turbocharger removal.
- Threads are stripped, crossed or badly corroded.
- The stud is bent, broken or damaged during extraction.
- Original hardware is required after an incorrectly repaired mounting connection.
The early Jetta production restriction applies to this exact stud assignment. A model-year match by itself is insufficient. Do not substitute a later stud or transfer a tightening value from another turbocharger configuration. Diagnose a leaking gasket or damaged turbocharger separately; one stud is not a complete repair kit.
Vehicle fitment
Match the complete vehicle configuration and original attachment point in the table. Check the installed hardware and factory part assignment before ordering. Adjacent fasteners, gaskets and brackets can have different restrictions.
| Vehicle | Model years | Engine | Configuration | Application restrictions |
|---|---|---|---|---|
| Volkswagen Beetle | 2013 | 2.0L turbocharged gasoline inline-four; CPLA / CPPA | Coupe; specified EA888 turbocharger connection; VIN engine code S or T; 6-speed manual / 6-speed DSG; front-wheel drive | Assigned turbocharger stud at original point 2. Match CPLA/CPPA and VIN engine code S/T; earlier CCTA/CBFA engines are excluded. |
| Volkswagen Jetta | 2014 | 1.8L turbocharged gasoline inline-four | Mk6 sedan; early turbocharger stud arrangement; Factory transmission as equipped; front-wheel drive | Catalog restriction: through July 2013 production only. From August 2013, the same diagram assigns N91231701 instead. Verify production date and original stud; excludes TDI and Hybrid. |
Installation guidance
Allow the engine and exhaust assembly to cool, support the turbocharger and follow the factory removal and installation procedure. Inspect the receiving threads and mounting faces. Do not use a new stud to compensate for stripped threads or a distorted mating surface. Use the prescribed stud installation method, matching nuts and tightening sequence.
Follow the current factory instructions for the exact vehicle and connection, including required hardware renewal and final assembly checks. Proper preparation and alignment are necessary before securing the component.
Ordering information
This listing is one genuine replacement turbocharger mounting stud. Related assemblies, nuts, washers, seals and other hardware are supplied separately. Confirm the repair quantity against the original diagram before ordering.