283516 Compression Seat Spring & 422127-4 Cap Compatible with Gra-sshopper, Joh-n Deere Cub Cadet ZT1 Mower, Compressed Springs Can Provide The Necessary Support and Cushioning

What It Is

This is a set of two compressed seat springs (part 283516) and one cap (part 422127-4) that replace worn-out suspension components on zero-turn mowers. They provide the necessary support and cushioning for the operator seat, reducing vibration and improving ride comfort on rough terrain.

Fitment & Compatibility

Before buying, check your mower’s brand, model, and seat assembly design. This kit is marketed for Grasshopper, John Deere, and Cub Cadet ZT1 mowers, but not all models within those lines use the same spring/cap setup. Measure the original spring’s uncompressed length (approx. 4–5 inches) and coil diameter (about 1.5 inches) to confirm. The cap fits a standard seat post tube (1-inch diameter). Verify your seat base uses two springs side-by-side—some models use a single spring or gas strut. If you have a different brand (e.g., Toro, Husqvarna), the mounting hole spacing and spring rate may not match.

Key Things to Buy

• Quality vs. OEM: Aftermarket springs may be slightly stiffer or softer than OEM. Check reviews for sagging or noise after a season.
• Installation difficulty: Easy—requires removing seat pan, swapping springs, and reinstalling. No special tools needed, but you may need to loosen seat bolts.
• Common gotcha: The cap may not seat perfectly if your seat post has corrosion or a different taper. Clean the post before installing.
• Set includes only two springs: If your seat uses more (some models have four), this kit won’t work.

Should You Buy It

Buy this if your mower seat has lost its bounce, you feel every bump, and you’ve confirmed the spring dimensions and mounting pattern match. It’s a low-cost fix that restores comfort on zero-turn mowers from the listed brands. If your seat uses a different suspension system or you need a gas spring, look elsewhere.