Comp Cams TDC Stop Tool 4795 — 14mm Bolt-Style Heads-On Steel, Cadmium-Plated Precision

The COMP Cams 4795 Top Dead Center Stop is a 14 mm bolt-style, heads-on steel tool plated in cadmium that locks an engine at true TDC for accurate cam and ignition work.

When you need a compact, vehicle-specific TDC locator that installs from the cylinder head without removing the timing cover, the COMP Cams 4795 provides a simple, durable solution. Machined from steel and finished in cadmium for corrosion resistance, this 14 mm bolt-style stop indexes into the crank or cam train to hold the engine at top dead center while you set cam timing, time the ignition, or perform valve and head service.

How does this TDC stop fit my engine setup?

The 4795 is a heads-on design intended to be used where access allows a bolt-style stop to engage at TDC. It fits vehicle-specific applications and secures into the designated position to prevent crank rotation. Always verify fit with your engine service manual or a COMP Cams fitment guide before use.

• 14 mm bolt-style installation for compatibility with common head bolt/plug locations.
• Designed for heads-on access—no timing cover removal required in many applications.
• Vehicle-specific fit type—check model fitment before purchase.

What materials and finish does it use, and why that matters?

This stop is manufactured from steel and cadmium plated to resist corrosion and maintain dimensional stability under shop conditions. The robust construction resists wear during repeated installs and removals, keeping the locating surface true for precise timing work. A hardened, plated surface reduces the chance of galling or seizing when installed into aluminum heads.

• Steel core for strength and rigidity during torque and load.
• Cadmium plating for corrosion resistance and long-term reliability.
• Precision-machined tip to provide a repeatable locating point at TDC.

How do you use the COMP Cams 4795 when setting cam or ignition timing?

Use the stop to hold the crankshaft at true top dead center while adjusting timing components. Bring the engine to the TDC position per service procedure, then install the 14 mm bolt-style stop into the designated head location until it engages the locating surface. With the stop in place, perform your cam timing, ignition timing, or valve clearance checks safely and accurately.

• Rotate engine to TDC by hand or using the crank tool, following factory marks.
• Install the 4795 into the heads-on access point until it seats against the locating surface.
• Confirm zero crank rotation, then set cam/ignition timing or check clearances.

What are the package and origin details I should know?

The tool ships individually in a compact package and is made in the United States. The small footprint and light weight make it easy to store in a toolbox or technician kit. Keep the item with your timing tools for quick access during engine assembly and tuning tasks.

• Package dimensions: 1.524 H x 14.986 L x 8.89 W centimeters — compact for storage.
• Package weight: 0.15 pounds — lightweight and tool-roll friendly.
• Country of origin: United States — manufactured to COMP Cams quality standards.

Who is this for: The COMP Cams 4795 Top Dead Center Stop is aimed at engine builders, professional mechanics, and experienced DIYers who work on vehicle-specific engines and require a reliable, heads-on TDC locating tool. If you perform cam installations, ignition timing, or valve jobs and need a durable, repeatable means to lock the crank at TDC, this compact 14 mm bolt-style stop is a practical addition to your timing toolset.