JZGRDN Tachometer Cable AR26721 1407-0564 Compatible with 3010 3020 4000 4010 4020 4320 4520 4620 Tractors

What It Is

The JZGRDN Tachometer Cable (AR26721 / 1407-0564) is a replacement drive cable that connects the engine tachometer to the gauge on select John Deere tractors. It’s designed for older utility and row-crop models where the original cable has snapped or become stiff, causing a dead or erratic tach reading.

Fitment & Compatibility

• Exact OEM cross: Replaces John Deere parts AR26721 and 1407-0564.
• Compatible models: Deere 3010, 3020, 4000, 4010, 4020, 4320, 4520, 4620 tractors.
• Critical check before buying: Measure the overall length (cable + fittings) against your original cable. These models can have slight variations by year or sub-model (e.g., 4020 with Syncro-Range vs. PowerShift). The cable must also have the correct drive end fitting (square or pin drive) to match your engine’s tachometer drive port.
• Deck/hydraulics: Not related to mower decks; this is strictly for tractor tachometer function.

Key Things to Know

• Quality concerns: With a 3.3 rating from only 3 reviews, some users report the cable housing is thinner than OEM, leading to faster wear or binding.
• Installation difficulty: Moderate. You’ll need to access the rear of the tach gauge and the engine drive port. Lubricate the cable lightly with light oil before installation to reduce friction.
• Common gotcha: If the tachometer itself is seized or the drive gear in the engine is stripped, a new cable won’t fix the problem. Test the gauge by spinning the cable end with a drill before installing.
• Aftermarket fit: May require slight bending or trimming of the outer housing to route cleanly—check clearance around the engine block and dash panel.

Should You Buy It

Buy this cable only if you need a low-cost, quick fix for a broken tach cable on one of the listed tractors and are comfortable with minor adjustments. It’s not a premium OEM replacement—expect shorter lifespan and possible fitment tweaks. For a long-term, hassle-free repair on a working tractor, consider the genuine John Deere part instead.