• N-902-127-03 Genuine VW/Audi M8 by 47 timing assembly socket bolt, M8 by 47 bolt identification, original product photo 1
  • N-902-127-03 Genuine VW/Audi M8 by 47 timing assembly socket bolt, internal hexagon drive, repeated original archive photo 2
  • N-902-127-03 Genuine VW/Audi M8 by 47 timing assembly socket bolt, combination head reference, repeated original archive photo 3
  • N-902-127-03 Genuine VW/Audi M8 by 47 timing assembly socket bolt, threaded shank detail, repeated original archive photo 4
  • N-902-127-03 Genuine VW/Audi M8 by 47 timing assembly socket bolt, timing assembly mounting hardware, repeated original archive photo 5
  • N-902-127-03 Genuine VW/Audi M8 by 47 timing assembly socket bolt, individual genuine fastener, repeated original archive photo 6
  • N-902-127-03 Genuine VW/Audi M8 by 47 timing assembly socket bolt, archive product identification, repeated original archive photo 7
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Genuine VW/Audi

N-902-127-03 Genuine VW/Audi Timing Chain Assembly Socket Bolt

N-902-127-03 Genuine VW/Audi Timing Chain Assembly Socket Bolt

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N-902-127-03

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OVERVIEW

The original socket bolt for the specified timing assembly connection

N-902-127-03 is the Genuine VW/Audi socket-head combination bolt assigned to the timing assembly on the S4 Cabriolet configuration below. Its factory designation is AM8×47-S4-S.

Timing components use several visually similar fasteners with different lengths and head arrangements. Match the complete factory number at the original mounting position rather than selecting a bolt by diameter alone.

Technical details

  • Complete factory number: N-902-127-03.
  • Factory specification: AM8 × 47-S4-S; nominal M8 × 47.
  • Design: socket-head combination bolt with internal hexagon drive.
  • Quantity supplied: one individual bolt.

The nominal diameter and length identify this particular fastener. They do not establish interchangeability with nearby timing bolts or a general-purpose M8 bolt. The original bearing arrangement and installed engagement must be preserved.

Common reasons to replace

  • The internal drive has rounded or become damaged.
  • Threads are damaged or cross-threaded.
  • The head or bearing surface is distorted.
  • The original bolt is missing during timing assembly work.
  • The factory repair procedure calls for replacement at the serviced connection.

Inspect the receiving threads, component seating surfaces and associated mounting parts. Resolve damaged threads or an incorrectly seated component before fitting replacement hardware.

Vehicle fitment

The table identifies the confirmed engine, body style and VIN boundary. Use this bolt only at the timing assembly position originally assigned the complete part number.

Vehicle Model years Engine Configuration Application restrictions
Audi S4 2005–2006 4.2L MPI gasoline V8; PR D5E Cabriolet; quattro; Original timing assembly mounting position Only original N90212703 AM8×47-S4-S position; VIN through 8H-7-003760.

Installation guidance

Timing assembly work requires the vehicle-specific factory procedure, including the correct support and timing tools where required. Restore the original connection, start the bolt by hand and follow the specified tightening sequence and replacement requirements.

Complete all timing and assembly verification steps required by the factory procedure before returning the engine to service. Do not infer a torque value from the bolt diameter.

Ordering information

One genuine bolt is supplied. Timing chains, guides, sprockets, brackets and other bolts are not included. Verify the original number, VIN and quantity needed before ordering.