AMTuned will be closed for holiday Dec 20th - Jan 3rd. Orders placed during this time will ship out after our holiday closure.



Audi 4.2L 32 Valve Chain Engine Cylinder Head Rebuild (V8 RS4, V8 RS5 V8 R8, V8 S5, V8 Q7)

Regular price $1,695.00

The AMTuned cylinder head rebuild services for the 32v 4.2L chain engines. Turn around time is 2-3 weeks.

All cylinder heads are to be delivered bare with ONLY valve spring package remained installed and not disassembled. All accessories, camshafts, cam caps, rockers, bolts, and fuel injectors are to be removed and not included when shipping or dropping off your cylinder heads. Shipping to and from our location is not included in pricing and is the customers responsibility. When shipping cylinder heads to us, package them separately in box's with sufficient protection and deliver them to:

AMTuned LLC

5079 North Dixie Hwy #159. Oakland Park, FL 33334

Stage 0:

  • Soda Blasting / Cleaning / Deck Surfacing
  • Cleaned and Recut Factory Valves
  • AMTuned Valve Guides & Viton Seals
  • Reassembly With Original Springs & Retainers
  • Pressure Tested

Stage 1:

  • Soda Blasting / Cleaning / Deck Surfacing
  • Supertech Black Nitride Intake Valves (Std Size)
  • Supertech Inconel Exhaust Valves (Std Size)
  • Supertech Single Groove Keepers
  • Performance Valve Job
  • AMTuned Valve Guides & Viton Seals
  • Reassembly With Original Springs & Retainers
  • Pressure Tested

Stage 2:

  • Soda Blasting / Cleaning / Deck Surfacing
  • Supertech Black Nitride Intake Valves (+1mm) 
  • Supertech Inconel Exhaust Valves (+1mm)
  • Supertech Single Groove Keepers
  • Performance Valve Job
  • Supertech Performance Single Valve Springs
  • Supertech Titanium Retainers
  • AMTuned Valve Guides & Viton Seals
  • Pressure Tested

Stage 2 package +1mm valves will not work with factory pistons. Our aftermarket rod and piston package for boosted applications will accept the larger diameter valves.