Quick Reference
Diesel Torque Spec Quick Sheet
This quick sheet gives you safe, universal torque specs for common diesel engines. These values apply to the most common configurations and do not depend on VIN or bolt revision. Always verify torque specs against your OEM service manual for critical components.
Important: These torque specs are universal values. If your engine has year-specific or VIN-specific torque requirements, always check the OEM manual.
Detroit Diesel
DD13 / DD15 / DD16
| Component | ft-lbs | Nm | Note |
|---|---|---|---|
| Injector hold-down bolts | 37 | 50 | Replace bolts — torque-to-yield |
| Valve cover bolts | 9 | 12 | |
| Fuel rail pressure sensor | 18 | 24 | |
| Camshaft position sensor | 8 | 11 |
Cummins ISX / X15
| Component | ft-lbs | Nm | Note |
|---|---|---|---|
| Jake housing bolts | 18 | 24 | |
| Injector hold-down | 28 | 38 | Replace bolts — torque-to-yield |
| Valve cover bolts | 9 | 12 | |
| Fuel rail pressure sensor | 18 | 24 |
PACCAR MX-13
| Component | ft-lbs | Nm | Note |
|---|---|---|---|
| Injector hold-down | 22 | 30 | Replace bolts — torque-to-yield |
| Valve cover bolts | 9 | 12 | |
| NOx sensor | 37 | 50 | |
| Fuel rail pressure sensor | 18 | 24 |
Volvo D13 / Mack MP8
| Component | ft-lbs | Nm | Note |
|---|---|---|---|
| Injector hold-down | 22 | 30 | Replace bolts — torque-to-yield |
| Valve cover bolts | 9 | 12 | |
| Camshaft position sensor | 8 | 11 |
Diesel Pickups
Powerstroke, Duramax, RAM Cummins
Powerstroke 6.7L
| Component | ft-lbs | Nm | Note |
|---|---|---|---|
| Injector hold-down | 24 | 33 | Replace bolts — torque-to-yield |
| Glow plugs | 15 | 20 |
Duramax L5P
| Component | ft-lbs | Nm | Note |
|---|---|---|---|
| Glow plugs | 15 | 20 | |
| Injector hold-down | 22 | 30 | Replace bolts — torque-to-yield |
RAM Cummins 6.7L
| Component | ft-lbs | Nm | Note |
|---|---|---|---|
| Injector hold-down | 22 | 30 | Replace bolts — torque-to-yield |
| Banjo bolts | 18 | 24 |
Torque-to-yield bolts must be replaced. Injector hold-down bolts, stretch bolts, and any fastener marked TTY in the OEM manual are single-use. Reusing them risks under-torque, seal failure, or bolt breakage.
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