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Author Topic: Torque specs on rearend bolts. 03SVTPower CAFords OG Member # 518 posted                              How many ft/lbs do the bolts take when bolting back up the the rearend on the IRS pumpkin. Gettin ready to re-seal and throw some new fluid in. -------------------- 2003 Redfire "AED" Cobra R.I.P Posts: 3481 | From: Nor-Cal | Registered: Oct 2001  |  : FoX GT ¯ Member # 4587 posted                              The front bolts are 18mm and tq 52ft/lbs. The rear bolts are 15mm and tq to 76ft/lbs. The differental housing cover bolts are 13mm and are tqed to 24 ft/lbs. If refilling the rear axle (4001), first add 118 ml (4 oz) of Additive Friction Modifier C8AZ-19B546-A or equivalent meeting Ford specification EST-M2C118-A. For the fluid use SAE 75W- 140 High Performance Rear Axle Lubricant F1TZ-19580-B or equivalent meeting Ford specification WSL-M2C192-A. The refill capacity is 1.23-1.37 liters (2.6-2.9 pints). -------------------- - AED - 03 Cobra 10th anni 3.4 Whipple 9.47@141 2012 Mustang GT 10.98@125 2015 Mustang GT Bring what you got and hope its enough! Posts: 1955 | From: East bay | Registered: Jun 2004  |  : 03SVTPower CAFords OG Member # 518 posted                              Thanks for the info! -------------------- 2003 Redfire "AED" Cobra R.I.P Posts: 3481 | From: Nor-Cal | Registered: Oct 2001  |  :

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