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S4 Supercharger pulley
Your S4
Pick your year to see what fits.
This page covers US S4s only. The S5 has its own page.
+30–60 whp (est.)
Expert$199–$1994–6 hrs
Why do it
A smaller pulley spins the supercharger faster for much more power, once it's tuned.
Heads up
Needs a matching tune.
Tools you'll need
- Jack and 4 jack stands
- Socket set
- Torque wrench
- Pulley removal tool
- Trim tools
Starting out? See our budget tool list.
Parts to buy
- 034 3.0 TFSI supercharger pulley 034-145-Z034 (2010-2016) Listed for the 2010-2017 S4. Comes with a new belt.Fits 2010–2016 · 3.0T supercharged
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Before you start
- This raises boost, so it needs a matching tune before you drive hard.
Steps
Remove the belt
- Release the tensioner and take off the belt.
Take apart the front end
- Remove the bumper and what's in the way.
Move the front to service position
- Slide the radiator support forward.
Swap the pulley
- Pull off the stock pulley and fit the new one.
Refit the belt
- Put the new belt on.
How to know it worked
- No belt noise.
- No warning lights after the tune.
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Safety first
- Park on flat ground, set the parking brake and chock the wheels.
- Never get under a car held up only by a jack. Use jack stands.
- Let the engine and exhaust cool first.
- Disconnect the battery before unplugging electrical parts.
- Wear safety glasses.
- If something doesn't match your car, stop and ask a shop.
Follow your part's instructions and your service manual's torque specs.