Engine -Cylinder head, valve drive 911 Carrera (996) · No. Designation Qty. Removal

Engine -Cylinder head, valve drive 911 Carrera (996) Note: No. Designation Qty. Removal Installation (20) Cylinder-headscrew 12 Alwaysreplace, or MID x 234 replace by cylinder-head screw MIa x 230 (10.9) 20 Cylinder-headscrew 12 Can be re-used M10 x 230 (10.9) 21 Cylinder head 1 Ensuresealing surfaces are Compare pairing numbers protected from damage; with cylinder head cover use suitable pad. and bearing saddles. Cylinder heads are identified with 1 -3 or 4 -6. See Assembly instructions 22 Cylinder-headgasket 1 Always replace. The gaskets are identified by Zyl. 1 -3 or Zyl. 4 -6 and the corresponding part number. When they are fitted, the cylinder head identificationor the part number must face downwardtoward the exhaustside. Note Magnetised tools or magnets must not be used when removing and installingvalve tappets (flat-base tappets). A suitable removal tool is a rubber suction cup, for example. 15 -18 15 70 37 Disassembling and assembling cylinder head -Camshaft drive 9961515 Printed in Germany -28, 1999