Title:
SPONGE,BONNET (KU-RD81943680)
Description:
The Kubota RD819-43680 Sponge, Bonnet is a genuine Kubota bonnet/engine-cover sealing and cushioning sponge used on compatible KX Series excavators. Kubota parts catalogues identify it specifically as SPONGE, BONNET.
This is not an engine filter or cleaning sponge. It is a formed foam sealing/insulation component fitted around the bonnet/engine-cover area. Its purpose is to help close gaps between the bonnet and surrounding panels, reduce vibration and rattling, and provide additional acoustic and protective insulation around the engine compartment. The parts catalogue groups several RD819-436xx components under the same SPONGE, BONNET description, indicating that these are individual pieces forming the bonnet’s overall sealing/insulation arrangement.
Model Fitment:
Current parts listings identify RD819-43680 for several Kubota excavator configurations, including:
- KX080-3
- KX080-3T
- KX080-4
- KX080-4S2
- KX080-5
Part Details:
Manufacturer: Kubota
OEM Part Number: RD819-43680
Part Name: Sponge, Bonnet
Expanded Description: Bonnet / Engine-Cover Sealing & Insulation Sponge
Alternative Names:
- Bonnet Sponge
- Engine Cover Sponge
- Bonnet Seal
- Engine Compartment Foam Seal
- Bonnet Insulation Foam
- Bonnet Cushion/Sealing Sponge
Part Type: Genuine Kubota bodywork / engine-compartment component
Condition: New
Function: Provides cushioning, sealing and noise/vibration insulation around the bonnet and engine-cover assembly.
Approximate Weight: 0.128–0.13 lb (approximately 58–59 g).
Catalogue information indicates that RD819-43680 replaces earlier bonnet-sponge numbers, including:
