Multiquip 04021210 Ring Gear 123 Teeth 1D81Z

The Multiquip 04021210 Ring Gear 123 Teeth 1D81Z is a genuine OEM component designed for the MVH508DZ reversible plate compactor. Sourced directly from Multiquip, this ring gear is manufactured to the exact tooth count and dimensional profile required for proper engine starting performance on the MVH508DZ. Keeping the correct OEM ring gear in place ensures the starter engages cleanly and consistently, protecting both the starter motor and the engine flywheel from premature wear.

Key Features

• Exact 123-Tooth OEM Profile: — Machined to the precise tooth geometry and count specified for the MVH508DZ, ensuring full starter engagement without skipping or binding.
• Genuine Multiquip OEM Part: — Supplied directly through the Multiquip parts network, matching the original component in material grade and dimensional tolerancing.
• Direct-Fit for MVH508DZ Reversible Plate Compactors: — Engineered specifically for the MVH508DZ, this ring gear installs in place of the original without modification to the flywheel or starter housing.
• Protects Starter System Integrity: — A worn or damaged ring gear causes erratic starter engagement, leading to accelerated wear on the starter drive pinion and eventual no-start conditions — replacing it promptly keeps the ignition system intact.
• Verified Part Number 04021210: — Cross-reference 04021210 against your machine's serial plate and parts manual before ordering to confirm correct application.

The ring gear is a toothed ring mounted to the engine flywheel that allows the electric or recoil starter to engage and crank the engine. When the starter is activated, its drive pinion meshes with the ring gear teeth to rotate the flywheel and initiate combustion. Over time, repeated engagement causes the teeth to wear or chip, resulting in rough starts, grinding, or a complete failure to crank. Replacing a worn ring gear restores clean starter engagement and prevents secondary damage to the starter motor itself.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

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Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.