DeatschWerks

550cc - Audi S4/RS6/S6/S8 4.2L V8, Titan 5.6L

550cc - Audi S4/RS6/S6/S8 4.2L V8, Titan 5.6L - Main image
$474.54 $719 In stock

Category: Fuel Injector

Upgrade your Audi’s performance with DeatschWerks’ matched set of eight 550 cc/min fuel injectors, engineered for the 4.2‑L V8 engines found in S4, RS6, S6 and S8 models from 2001‑2009.

  • Flow rate of 550 cc per minute per injector for reliable fuel delivery.
  • Direct fit for Audi S4, RS6, S6 and S8 equipped with the 4.2 L V8 engine.
  • Comes as a complete set of eight injectors, ensuring balanced performance across all cylinders.
  • Manufactured by DeatschWerks, a trusted name in performance fueling solutions.
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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.6 / 5 · 5 reviews)

Sofia ★★★★★

The 550cc flow rate was spot-on for my RS6 tune—car pulls noticeably harder in the mid-range now.

Miles ★★★★★

Swapped these into my 2007 S4 and the idle smoothed out immediately—the matched set really makes a difference over stock. Car pulls noticeably harder through the mid-range now, and installation was straightforward with no leaks.

Richard T. ★★★★★

Finally got these injectors swapped into my S4 and the idle smoothed right out. The matched flow set took the guesswork out of the install. Car feels noticeably stronger through the mid-range.