DPTOOL Engine Timing Tool Kit for GM/Chrysler 2.8L Duramax — Cam, Crank & Diesel Pump Locking Fixtures

DPTOOL Engine Timing Tool Kit is a purpose-built camshaft, crankshaft and diesel pump locking set designed to accurately hold timing positions on GM/Chrysler 2.8L Duramax engines during service.

When you work on timing, fuel pumps, or remove crank/cam sprockets on Jeep, Chrysler, Holden or Dodge models equipped with the 2.8L Duramax family, correctly securing rotating components is essential. This kit provides OEM-equivalent fixtures that align with VM64C / ENS / 49C / 50C / VM10D / VM11D / LWN / LWH engine codes and matches part references such as VM 9991, VM 9992, EN-50029, EN-50030, EN-51025 and EN-51104. Built to interface with the reluctor and cylinder head faces, the pieces let a technician lock camshafts, crankshafts and the diesel pump sprocket to maintain base timing while removing or installing retaining nuts and sprockets.

How does this kit secure camshafts and crankshafts during timing work?

The kit includes a cam locking fixture that indexes to the reluctor at one end and fastens to the cylinder head at the other, holding camshafts exactly at base timing. A crank locking element prevents rotation of the crank during sprocket removal or installation. Using both together stabilizes the entire timing train and reduces the risk of misalignment when the timing chain or gears are exposed.

• Cam locking tool fits reluctor and bolts to cylinder head face for precise indexing.
• Crank lock holds crankshaft steady during nut removal and reassembly.
• Designed to interface with OEM mounting points and service positions.

Will this kit work on my Jeep Cherokee, Wrangler or Chrysler models?

Yes — the kit is compatible with a range of vehicles that use the 2.8L Duramax engines. Listed applications include Jeep Cherokee (2008–2011), Jeep Wrangler (2007 onward), Chrysler Grand Voyager (2008 onward), Holden Colorado/Trailblazer (2012 onward) and Dodge Nitro (2007–2010). Confirm your engine code (for example VM64C, VM10D or LWN) against the vehicle’s identification to ensure fitment.

• Works on multiple GM/Chrysler 2.8L Duramax engine codes.
• Compatible with noted Jeep, Chrysler, Holden and Dodge models and years.
• OEM-equivalent part numbers for straightforward cross-reference.

What does the EN-51104 diesel pump locking tool do and how is it used?

The EN-51104-style diesel pump locking piece fits over the pump sprocket and engages its teeth so the sprocket can’t rotate while the retaining nut is removed or tightened. It provides a positive mechanical stop that prevents timing offset of the fuel pump relative to the cam and crank. Technicians use it in combination with cam and crank locks for full timing control on diesel pump service.

• Fits over the pump sprocket, engaging teeth to hold position.
• Used during pump retaining nut removal and reinstallation to preserve timing.
• Pairs with cam/crank locks for complete timing stability.

What are the practical benefits and precautions when using this timing kit?

Using dedicated locking tools reduces the chance of timing misalignment, speeds up work by removing guesswork, and protects engine components from damage caused by uncontrolled rotation. As with all timing work, double-check engine code compatibility, follow manufacturer torque and sequence specifications, and avoid applying excessive force to the locking tools themselves to prevent component damage.

• Minimizes timing errors and repeat repairs.
• Saves technician time by providing positive indexing points.
• Must be used with correct service procedures and engine identification.

Who this is for: This DPTOOL kit suits professional technicians, independent mechanics and experienced DIYers who perform timing, diesel pump or sprocket service on 2.8L Duramax-equipped Jeeps, Chryslers, Holdens and Dodges. If you need OEM-equivalent locking tools to maintain precise cam, crank and pump positioning during disassembly or reassembly, this kit delivers the fixtures and fitment references required for confident, repeatable timing work.