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- A3 1.8T 20v AEB
- A3 2.0L 16v EA113
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- R8 5.2L 40v V10
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- TT RS 2.5L 20v TFSI
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- 250 GTO & 275 V12 24v
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- Hyundai
- Genesis 2.0L Turbocharged
- Genesis 3.8L V6
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- Miata 1.6L B6
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- 626 MX6 Protegé 2.0L FS
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- Cooper S 1.6L Prince Turbocharged
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- Opel / Vauxhall
- Astra X20XEV 16v 2.0L
- Astra Coupe Turbo Z20LET 16v 2.0L Turbocharged
- Calibra C20XE & C20LET 16v 2.0L
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- Peugeot
- 207GT EP6 16v 1.6L Turbocharged
- 308GTi EP6 16v 1.6L THP Turbocharged
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- Renault
- Megane Sport 250 & 265 16v 2.0L Turbocharged
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- Scion
- FRS FA20D 16v
- tC 2AZFE 2.4L
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- Subaru
- BRZ FA20D 16v
- Forester EJ25 SOHC
- Legacy EJ25 DOHC
- Outback EZ30 H6 24v 1st Gen
- Outback EZ30 H6 24v 2nd Gen
- SVX EG33 H6 24v
- WRX FA20F 16v Turbocharged
- WRX EJ20 & WRX STi EJ25 Turbocharged
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- Volkswagen
- Golf & Jetta 8v 1.8L 2.0L
- Golf & Jetta 16v 1.8L 2.0L
- Golf GTI 1.8T 20v 1.8L
- Golf GTI VR6 12v 2.8L
- Golf R EA113 & EA888 16v 2.0L TFSI
- Golf Rabbit I5 20v 2.5L
- Golf R32 VR6 24v 3.2L
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Collection: S4 4.2L 40v V8

Supertech Products for the 2003-2008 Audi S4 4.2L 40v V8 Engines

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