Description
Replacing a timing belt means holding four camshafts in a position that no longer exists once the old belt comes off. Get it wrong and the engine turns freely for exactly one revolution. The Cam Lock is a five-piece kit of hardened holders that pin the camshafts in place, so the belt goes back on with the engine in the same relationship it arrived in.
The set covers the geometry that matters in practice: single overhead cam, dual cam and four cam engines, with holders sized to seat against the camshaft body rather than the sprocket teeth. That distinction is what allows the tool to hold a cam while the sprocket is unbolted, which is the step where improvised methods fail and the valve train moves.
Each piece is machined from steel with a flat locating face, so the holder sits square against the head instead of rocking on a casting edge. The kit packs into a case small enough to live in a toolbox drawer, which is why it gets used rather than remembered after the fact.
It is a specialised tool, and that is the point. A general mechanic with a universal set and no cam holder will improvise with a spanner and a zip tie. This kit replaces that improvisation with a repeatable procedure, which is what turns a four-hour job into a quoted job.
The right holder is cheaper than one bent valve.
Key Features
- ✦ Five-piece kit covers single, dual and four cam engines
- ✦ Hardened steel holders with flat locating faces
- ✦ Seats against the camshaft body, not the sprocket teeth
- ✦ Holds camshaft position while sprockets are unbolted
- ✦ Prevents valve train movement during belt replacement
- ✦ Case included for toolbox storage
- ✦ Sized for universal use across common engine families
Technical Specifications
- Set contents: 5 camshaft locking holders
- Material: Hardened steel
- Coverage: SOHC, DOHC and four-cam engines
- Function: Camshaft position locking
- Use: Timing belt and chain service
- Storage: Moulded case
- Origin: Mainland China
- Finish: Machined steel
- Application: Universal engine timing service
- Customisation: Not required
Where It Belongs
Workshops performing timing belt replacement on overhead cam engines. Mobile mechanics who need to lock a cam without an OEM-specific tool for every model. Engine builders setting cam timing on a stand. Technicians working on older engines where the factory tool is out of production and the alternative is a spanner wedged against a casting.
Frequently Asked Questions
Q: Will this fit my engine?
A: The kit is a universal set covering single overhead cam, dual cam and four cam configurations. Check the holder profile against your camshaft body before the job, as with any universal timing tool.
Q: Does it lock the camshaft or the sprocket?
A: The holders seat against the camshaft body, which is what allows a sprocket to be unbolted while the cam stays in position.
Q: Can I use it on a timing chain job?
A: It is intended for camshaft locking during belt or chain service. For chain jobs that also require crank locking, a separate crank holding tool is still needed.
Q: Is the steel hardened?
A: Yes. Each holder is machined from hardened steel with a flat locating face so it sits square against the cylinder head.
Q: How many pieces come in the kit?
A: Five holders in a moulded case, sized to cover the common cam spacing found across SOHC, DOHC and four-cam engines.
Q: Is it suitable for professional daily use?
A: It is built for workshop use. As with any timing tool, verify seating before releasing the belt tension, since that is the moment a misplaced holder becomes expensive.
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