51520900 07402200 Deck Spindle for Ariens Gravely Zoom ZT 42 CE CARB 3 Pieces

This set of 3 deck spindles is a replacement mower deck spindle assembly compatible with Ariens and Gravely Zoom ZT 42 mowers and matches OEM part numbers 51520900 and 07402200.

Product Overview

This 42-inch deck spindle set keeps your Ariens or Gravely zero-turn mower cutting smoothly. The three deck spindles replace worn or bent spindle housings and shafts on 42-inch decks. Designed as a direct drop-in for Zoom ZT 42 models, this deck spindle kit restores blade balance and cutting quality.

Key Features & Performance

• Set of three complete spindle assemblies for a full deck rebuild
• Pre-greased sealed bearings eliminate maintenance and extend service life
• Rigid cast iron housing resists flex under heavy mowing loads
• Machined blade mounting surface ensures true blade rotation with minimal vibration
• Straight shaft design accepts standard 42-inch mower blades
• Durable black powder coat finish resists corrosion from grass clippings and moisture

Fitment & Compatibility

• Ariens Zoom ZT 42 (42-inch deck)
• Gravely Zoom ZT 42 (42-inch deck)
• Replaces OEM part numbers 51520900 and 07402200

Common Uses

• Replacing noisy or seized spindle bearings on 42-inch zero-turn mowers
• Complete spindle overhauls during off-season maintenance
• Restoring deck performance after impact damage to spindle housings
• Upgrading factory spindles on high-hour commercial units

Technical Specifications

• Part Number(s): 51520900, 07402200
• Deck Size: 42 inches
• Quantity: 3 spindles
• Shaft Type: Straight with keyed blade bore
• Bearing Type: Sealed ball bearing
• Housing Material: Cast iron

Frequently Asked Questions

Q: Do these spindles fit both Ariens and Gravely Zoom ZT 42 models? A: Yes, they cross-reference to factory part numbers 51520900 and 07402200 and fit 42-inch decks on both Ariens and Gravely Zoom ZT 42 mowers.

Q: Is a blade bolt kit included? A: The set includes three bare spindles; you must reuse or purchase blade bolts, nuts, and washers separately.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.