S4- flange head engine bolt list
Assembled from measurements and experience with assist from PET.

Not for a concours engine but easier to R&R especially if someone else has put a load of whatever bolts in there.

(PET is generally useless for these. Many times the dashed lines go to the wrong bolt hole. Often the bolt is missing entirely.)

Lengths adjusted for common sizes without washers. Usually smaller but some are longer where I have found it beneficial to use more threads.

I will add to the list as they come up. Please post any you see missing.

Verified BelMetric part numbers included - https://belmetric.com

Common bolt thread/torque
M6___1.00__7
M8___1.25__15
M10__1.50__29

10.9 flange-head yellow zinc

Qty | Size | Length | (PET Length) | Note

red = caution or change, see note
orange = NOT flange-head bolt, see note


Timing belt job

belt cover
rear (left, right, lower)
02 M5 12 (12) PET says pan-head, flange-head fine, hall sensor
10 M6 16 (18) PET incorrectly shows 30 near crank

center
01 M6 12 dipstick tube
02 M6 16 (18)
01 M6 70 (73) through water pump
01 M8 55 through tensioner upper hole

right
01 M6 30 (18) PET not shown, implied 18, 30 full thread
01 M6 55 (40) PET inexplicably shows 40 with 55 in parens

left
02 M6 12 (30) socket-head w/washer, flappy solenoid to bracket, PET incorrect
02 M6 30 (18) PET incorrectly shows 18, 30 full thread
01 M6 35 (18) through flappy solenoid bracket

wire harness clip behind TB cover
01 M8 20

water pump
01 M6 16 tensioner axle bracket (PKT dog-bone)
05 M6 20
08 M6 25

thermostat
02 M6 25

cam oil seal
06 M6 20 (22)

oil level sensor
03 M5 16 (12) PET says 12, factory put 16

alt/ps cassette
01 M8 35
03 M8 40 (42)
01 M8 65 PET not shown
01 M10 110 (130) PET incorrect

ignition coil holder
02 M6 16

crank lock cover
02 M8 16 (12) automatic

a/c & air pump adjuster brackets combined
01 M8 20 (22) air pump delete
01 M8 25 (28) with air pump*

cam gear
02 M10 55 (55) 48ft/lb

block drain plug
02 M12 12 M12x1.5, aluminum washer 26ft/lb


BelMetric basic order summary:
M5 x 0.8
02 12 BFD5X12YLW
03 16 BFD5X16YLW

M6 x 1.0
01 12 BFD6X12YLW
15 16 BFD6X16YLW
11 20 BFD6X20YLW
10 25 BFD6X25FYLW
03 30 BFD6X30PYLW
01 35 BFD6X35YLW
01 55 BFD6X55YLW
01 70 BFD6X70YLW

M8 x 1.25
02 16 BFD8X16YLW
01 20 BFD8X20YLW (*25 BFD8X25YLW)
01 35 BFD8X35YLW
03 40 BFD8X40PYLW
01 55 BFD8X55YLW
01 65 BFD8X65YLW

M10 x 1.5
02 55 BFD10X55YLW
01 110 BFD10X110YLW

M12 x 1.5 drain plug
02 12 DP12X1.5HYLW

Total
62 (< $30 + ship)



Extended list

power steering pump
03 M6 12
01 M8 16 PET not shown, factory put 15, hose holder wire
02 M8 30 PET not shown, pump body
03 M8 40 (42)
01 M8 65 hex-head full thread w/flange nut, tensioner

alternator
01 M8 60 full thread w/flange nut, tensioner
01 M10 25
01 M10 130

a/c compressor (!! -89 !!)
02 M8 35 (40) PET says 40, factory put 35, mount lower
02 M8 40 mount upper
01 M10 20 M10x1.25, hose bracket
01 M10 35 (33) M10x1.25, upper front
01 M10 45 M10x1.25 upper rear
01 M10 45 (33) M10x1.25 w/flange nut, lower front usually stripped, use bolt and nut

stock tensioner
01 M8 45
01 M8 55 into oil galley, use silicone
01 M8 55 duplicated under center belt cover above
01 M8 55 hex-head no washer, roller
01 M8 60

clutch slave
02 M8 30

clutch housing cover
08 M8 30

crankshaft lock
02 M8 25

upper a/c condenser
02 M6 16

Created by PorKen