Piston installation position

2007 Audi S8SECTION Piston installation position
Fig 1: Piston Installation Position
GW00022295Courtesy of VOLKSWAGEN UNITED STATES, INC.
  • Identify allocation to cylinder with paint on piston crown.
NOTE:
  • Do not use a center punch or scribe, since the piston head coating will be damaged.

Installation position:

  • Arrows on piston heads point to belt pulley side.
  • Large valve recesses - 1Β  - point toward center of engine.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.