OVERVIEW
Factory self-locking hardware for the assigned assembly
Genuine VW/Audi N-014-705-8 is an M6 × 25 mm socket-head bolt with the original self-locking specification. It is used at particular timing-belt assembly and transmission oil-cooling line fastening positions on the confirmed Audi applications below.
Correct thread engagement, bolt length and locking behavior matter where a fastener secures a precisely located bracket or supports a routed oil line. This listing supplies one bolt. It does not include the bracket, idler pulley, oil pipe, clamp, seals or any other fasteners shown beside it in a parts diagram.
Technical details
- Complete factory number: N-014-705-8.
- Factory specification: M6 × 25 mm; socket head with internal hexagon drive; self-locking catalog designation.
- Design: metal bolt with cylindrical socket head and the locking treatment visible on the archived threaded portion.
- Quantity supplied: one individual bolt.
The M6 × 25 designation identifies nominal thread size and bolt length; it is not a shipping measurement. The same thread diameter appears on neighboring bolts with different lengths and purposes. Use the complete original number and exact fastening assignment, especially within a timing-belt assembly where different bolts must not be mixed.
Common reasons to replace
- The original bolt is missing or has been replaced previously with hardware of the wrong length or specification.
- The internal hex drive is rounded or damaged and no longer permits controlled tightening.
- Threads are corroded, stretched, crossed or otherwise damaged.
- The relevant repair procedure requires renewed self-locking hardware during timing-belt or gearbox oil-line service.
Inspect the receiving threads, bracket seating surfaces and supported components before installing new hardware. A damaged idler bracket, leaking oil line or stripped mounting point needs its own repair. Replacing this bolt alone does not correct belt alignment, tensioner faults or an oil leak.
Vehicle fitment
Match the engine, drivetrain, original fastening position and any PR code shown in the table. Timing-belt entries apply only to the stated 3.0L V6 assembly; they do not establish use on the 1.8T or S4 V8. Oil-line entries apply to the original automatic-transmission cooling arrangement. Quantities in the application notes describe the catalog assembly; each purchase supplies one bolt.
| Vehicle | Model years | Engine | Configuration | Application restrictions |
|---|---|---|---|---|
| Audi A4 | 2003 | 3.0L 30-valve gasoline V6; T15 | B6; quattro | Original timing-belt/idler-bracket assembly; catalog lists three at this assignment. Match original fastening position; not a replacement for every idler or tensioner bolt. |
| Audi A4 Cabriolet | 2004 | 3.0L 30-valve gasoline V6; PR D7A | 8H convertible; quattro | Original timing-belt assembly, M6 × 25 self-locking bolt assignment. Catalog quantity three; confirm engine PR D7A and original fastener. |
| Audi A6 | 2002–2003 | 3.0L 30-valve gasoline V6; PR D7A | C5; front-wheel drive | Original timing-belt/idler-bracket fastening position; catalog quantity one. Confirm PR D7A and original M6 × 25 self-locking assignment. |
| Audi A6 | 2003–2004 | 3.0L 30-valve gasoline V6; PR D7A | C5; quattro | Original timing-belt/idler-bracket fastening position; catalog quantity one. Confirm PR D7A and original M6 × 25 self-locking assignment. |
| Audi 100 | 1994 | 2.8L gasoline V6 | C4; quattro; original automatic transmission oil-cooling lines | Original gearbox oil-pressure line/clamp fastening assembly. Automatic transmission oil-cooling circuit only; match original line arrangement. Catalog quantity two. |
| Audi A6 | 1996 | 2.8L gasoline V6 | C4; quattro; original automatic transmission oil-cooling lines | Original gearbox oil-pressure line/clamp fastening assembly. Automatic transmission oil-cooling circuit only; match original line arrangement. Catalog quantity two. |
Installation guidance
Follow the factory procedure for the exact assembly and renew required single-use or self-locking hardware as directed. For timing-belt work, preserve the specified timing, locking-tool and tensioning sequence; do not loosen or tighten unrelated fasteners based on this listing. Start the bolt by hand in clean, serviceable threads.
Apply the assembly-specific tightening procedure rather than a generic M6 torque. Do not add an unapproved thread-locking compound or reuse hardware contrary to the repair instructions. After oil-line service, verify routing, clearance and leak-free operation. After timing-belt service, complete all specified timing and tension checks before operating the engine.
Ordering information
One purchased unit supplies one N-014-705-8 bolt. Confirm the full original number, 25 mm nominal length and factory self-locking requirement. Visually similar bolts or later revisions require their own application check; this listing does not assert universal interchangeability.