(2 Set) Brake Pad Kit GY21943B GX20494 GX20515 GX23240 GX10120 for J-OHN Deere 42" L, D, X Series 100 105 115 100 110 120 125 130 Tractors & Lawn Mower -Contain Retainer & Torsion Spring

What It Is

This is a 2-set brake pad kit (with retainer and torsion spring) designed to replace worn-out braking components on select John Deere lawn tractors. It restores stopping power for mower decks and drive systems, critical for safe operation on slopes or around obstacles.

Fitment & Compatibility

• Deck size: Fits 42-inch mower decks on John Deere L, D, and X Series tractors.
• Model list: 100, 105, 115, 110, 120, 125, 130 (verify your exact model number on the tractor’s ID tag under the seat or near the engine).
• OEM cross-reference: Replaces OEM part numbers GY21943B, GX20494, GX20515, GX23240, GX10120.
• What to measure: Compare pad width (approx. 1.5 inches) and spring length (approx. 3 inches) to your old parts. The kit includes two pads, two retainers, and two torsion springs—check that your mower uses this exact layout.
• Note: Not compatible with Z-Series or zero-turn models. If your tractor has a different deck size (e.g., 48-inch), skip this kit.

Key Things to Know

• Quality: Aftermarket kit, not OEM. Users report it works well for the price, but pad material may wear faster than genuine John Deere parts under heavy use.
• Installation difficulty: Moderate. Requires removing the brake assembly, compressing the torsion spring, and aligning the retainer. Have a spring compressor or pliers handy.
• Common gotcha: The torsion spring orientation matters—install it with the open coil facing away from the pad to avoid binding. Test brake lever travel before tightening fully.
• Fitment check: Some users note the retainer holes may be slightly off; filing or drilling may be needed on older mowers.

Should You Buy It

Right for budget-conscious owners of compatible 42-inch John Deere L/D/X Series tractors who need a quick, functional brake fix and can handle minor fitment adjustments. Skip if you want OEM longevity or have a larger deck or different series.