DeatschWerks 21S-06-0550-8 Fuel Injectors - 550cc Set of 8 for Audi 4.2L V8

The DeatschWerks 21S-06-0550-8 is a precision-matched set of eight high-flow fuel injectors designed for performance applications. Each injector flows 550cc/min, providing substantial fuel delivery upgrade over factory units for modified engines requiring enhanced fueling capacity.

Key Features:

• Flow rate: 550cc/min (approximately 52 lb/hr) per injector
• Complete matched set of 8 injectors for consistent fuel delivery across all cylinders
• Direct fit for Audi S4, RS6, S6, and S8 4.2L V8 engines (2001-2009)
• High-impedance design compatible with OEM electronics
• Precision flow-matched to within 1-2% for optimal performance and idle quality
• All-new injector construction with premium internal components
• Stainless steel body construction for durability and corrosion resistance

DeatschWerks injectors are engineered to support forced induction and naturally aspirated performance builds. These injectors are ideal for upgraded turbo systems, supercharger applications, or high-horsepower naturally aspirated builds requiring increased fuel flow. The precision flow-matching ensures smooth idle characteristics and consistent air-fuel ratios across all cylinders, critical for both performance and engine longevity.