OVERVIEW
Genuine combination bolt for specified engine attachments
The N-102-856-02 Genuine VW/Audi bolt is the specified M6×25 combination hex fastener for the verified engine attachment points below. Match the factory number and original location before replacing a missing or damaged bolt.
The same hardware number appears in secondary-air and selected oil-system assemblies. The table separates these uses and engine configurations. This bolt does not replace every fastener on an air pump, bracket or dipstick tube.
Technical details
- Complete factory number: N-102-856-02.
- Factory specification: M6 × 25.
- Design: external hexagon-head combination bolt.
- Quantity supplied: one individual bolt.
Correct catalog length and head bearing arrangement help maintain the intended clamp geometry. Similar-looking bolts can differ in thread engagement or contact area. Associated washers, seals and brackets remain specific to the original connection.
Common reasons to replace
- The original bolt is missing after engine service.
- The hex head is rounded or damaged.
- Threads are damaged or cross-threaded.
- The head bearing area is distorted.
- A previous repair fitted hardware with the wrong length or design.
Inspect the retained bracket or pipe and its receiving threads. A replacement fastener cannot correct a cracked bracket, faulty secondary-air pump or leaking oil-system seal. Diagnose the serviced system separately before deciding which components need replacement.
Vehicle fitment
Use only at the original attachment assigned N10285602. The Touareg row specifically describes the supercharged hybrid engine; other Touareg engines use different hardware arrangements.
| Vehicle | Model years | Engine | Configuration | Application restrictions |
|---|---|---|---|---|
| Volkswagen Jetta SportWagen | 2010 | 2.5L gasoline inline-five | Mk6 wagon; front-wheel drive; Original secondary-air assembly | Original secondary-air pump/pipe bracket assembly position assigned N10285602; not the larger M8 pump support bolts. |
| Volkswagen New Beetle | 2008 | 2.5L gasoline inline-five; PR TQ7 | Coupe; Original secondary-air assembly | Original secondary-air assembly assigned N10285602; verify bolt location against original hardware. |
| Volkswagen Touareg Hybrid | 2015 | 3.0L supercharged gasoline V6 hybrid; PR D12 | 4Motion SUV; 8-speed automatic hybrid | Original oil-dipstick tube/oil-system attachment assigned N10285602; D12 hybrid engine branch only. |
Installation guidance
Follow the factory procedure for the selected assembly. Support the retained component, align the mounting points and avoid loading a pipe or bracket sideways. Start the bolt by hand and use the original connection's specified thread preparation and tightening procedure.
Check component security, hose and harness clearance and any seals disturbed during access. Complete the functional or leak checks required by the serviced system. Do not apply torque values from another bolt merely because it also has an M6 thread.
Ordering information
Supplied as one genuine bolt. Pump, bracket, pipe, dipstick tube, seals and a complete hardware kit are not included. Confirm the original part number and quantity required for the repair.