LEAFLEX trailing shield flap replacement for Toro 22" mower — 115-8420 direct-fit, OEM-sized durable material

LEAFLEX 115-8420 is a direct-fit trailing shield flap designed to replace Toro part 144-6431 and restore rear protection on compatible 22" Toro lawn mowers.

This replacement trailing shield flap is engineered to match the original equipment fit for multiple Toro 22" models so you can stop debris from kicking back toward the operator and keep your mower performing safely. Molded from durable materials and sized to Toros’ OEM dimensions, the flap comes with plastic expansion anchors for an easy install. Read on for fit details, installation tips, and who should choose this exact part.

Which Toro mowers does this trailing shield fit?

The 115-8420 is compatible with a broad list of Toro walk-behind models using a 22" deck. It specifically replaces part number 144-6431 and fits many model numbers across Toro's 203xx and 209xx series.

• Directly compatible: 20330, 20330C, 20331, 20331C, 20339, 20339C
• Also fits: 20350, 20351, 20361, 20361T, 20370, 20371, 20377, 20378
• Additional compatibility: 20954, 20959, 21329, 21761

How do I install the LEAFLEX trailing shield on my Toro mower?

Installation is straightforward: remove any old shield, position the new flap, and secure it with the provided hardware. The kit includes plastic expansion anchors that must be prepared before insertion and the factory screws are used to seat them properly.

• Remove old guard and clean mounting area for a flush fit
• Grip anchors lightly with wide-jaw pliers to hold them during screw insertion
• Install factory screw until seated, then tap anchor/screw assembly into place
• Check alignment and tighten screws without over-torquing

What are the flap's dimensions and material notes?

The flap is sized to match Toro’s original guard footprint so it restores the intended protective coverage behind the deck. Measurements are given as the upper and lower bottom widths; slight variation is possible due to manual measurement.

• Upper bottom width: 16-15/16 inches
• Lower bottom width: 17-9/16 inches
• Constructed from durable molded material for impact resistance and flexibility
• Includes plastic expansion anchors for secure mounting

Will this part meet safety and fit requirements for my mower?

This replacement is manufactured to match the OEM part number 144-6431 and restore the mower's rear shielding function. However, verify fit and installation instructions in your mower’s owner's manual before mounting to ensure compatibility and safe operation.

• Replaces Toro part 144-6431 (OEM cross-reference)
• Fits multiple Toro models—confirm with your owner’s manual
• Follow manufacturer installation guidance to preserve safety features
• Designed to reduce kickback of debris but not a substitute for proper PPE

Who is this for: The LEAFLEX 115-8420 trailing shield flap is intended for Toro owners who need a reliable, cost-effective replacement for a worn or broken rear flap on 22" walk-behind mowers. It's a practical pick for homeowners and maintenance pros who value an OEM-style fit and straightforward installation—especially if your mower lists part 144-6431 in the service manual. If you are unsure whether your model matches the listed numbers, check the owner's manual or contact a Toro dealer before ordering to confirm proper part identification and installation steps.