Aluminum housings require precision. The values above are safe for aluminum if bolts are clean and lightly oiled. However, do use the 90° turn on old, reused bolts – they will break.
| Application | Bolt Size | Torque (N·m) | Torque (lb·ft) | Notes | |-------------|-----------|--------------|----------------|-------| | Housing to block (M12) | M12 x 1.75 | 95 | 70 | Dry, sequence critical | | Housing to block (early M10) | M10 x 1.5 | 55 | 41 | Pre-2005 | | Starter mounting (large) | M12 x 1.75 | 80 | 59 | | | Starter mounting (small) | M10 x 1.5 | 45 | 33 | | | Access cover | M8 x 1.25 | 25 | 18 | | | Rear engine mount | M14 x 2.0 | 175 | 129 | If equipped | cummins isx15 flywheel housing torque specs