Engine Barring Tools
Barring tools to rotate the crankshaft precisely — for valve lash, injector timing, TDC pinning and any job where you need the engine to move a few degrees at a time and then hold still.
A barring tool turns the engine from the flywheel ring gear, which gives you control the crank bolt never will: fine, repeatable movement with the leverage in the right place and no risk to the damper bolt. Any time you are setting valve lash, timing injectors, pinning TDC or walking an engine through to inspect a valve train, this is the tool that makes it a one-person job.
Barring tools are almost always engine-specific, because they have to index into a particular bell-housing port and mesh with a particular ring gear. Ferrum stocks OEM-alternative barring tools for the platforms shops see most — Detroit Diesel DD13/DD15/DD16 and 60 Series, Cummins X15, Volvo D11/D13/D16, Paccar MX-11/MX-13, plus CAT and Mack.
Shop Engine Barring Tools
How to Choose
Match the tool to the engine family first
Barring tools index into a specific access port and ring gear. A Detroit DD15 tool will not serve a Paccar MX-13. Start from the engine, then cross-reference the OEM tool number listed on each product — J-46392 for Detroit DD13/DD15/DD16, 3163160 for Cummins X15, 88800014 for Volvo D11–D16, 1903018 for Paccar MX.
Geared barring tool vs. turning socket
A geared barring tool bolts to the bell-housing and meshes with the ring gear, giving you fine control and the ability to hold position — the right choice for valve and injector work. A crank-turning socket on the damper is faster for simple rotation but gives coarser control and puts load on the damper bolt.
Watch the drive size and direction
Most barring tools take a 1/2" drive ratchet. Always rotate the engine in its normal direction of rotation unless a service procedure explicitly calls for otherwise — backing an engine up can unseat timing components and give you a false lash reading.
Pair it with the timing pins for the platform
Barring is usually half of the job. The other half is locking the engine at TDC with the correct cam and flywheel pins. Buying the barring tool and the timing/TDC pin set together for your platform saves a second order mid-job.
Frequently Asked Questions
What is an engine barring tool used for?
It rotates the crankshaft in small, controlled increments by driving the flywheel ring gear. It is used for setting valve lash, timing injectors, bringing an engine to TDC, and inspecting valve train components — anywhere you need precise crank position and the ability to hold it.
Can I just turn the engine by the crank bolt instead?
You can rotate it, but you lose the fine control a barring tool gives and you put repeated load on the damper bolt, which is a torque-to-yield fastener on many engines. For valve and injector work where position matters, a barring tool is the correct tool.
Is a barring tool universal across engines?
Generally no. The tool has to fit a specific bell-housing access port and mesh correctly with that engine's ring gear, so barring tools are sold per engine family. Check the OEM cross-reference number on the product against your engine before ordering.
Which barring tool do I need for a Cummins X15?
The Cummins X15 barring tool cross-references OEM number 3163160. Ferrum stocks an alternative to that tool; confirm your engine series before ordering, since earlier Cummins platforms use different tools.
Shop by Engine
Looking for tooling for a specific platform? Browse the engine-specific ranges:
Need Help Identifying the Right Tool?
Our team works with these engines every day. Contact us with your engine model and OEM tool number and we'll confirm the fit.