Description
Isopon BPO Hardener 20g H3840/S – Hardener for P38 & P40 Body Filler
Isopon BPO Hardener H3840/S is a 20g hardener sachet designed for use with compatible Isopon P38 and P40 body repair fillers. It is ideal as a replacement or additional hardener when carrying out automotive bodywork, panel repairs and general filler applications.
The BPO hardener is mixed with the compatible body filler before application, initiating the curing process and allowing the filler to harden ready for further preparation, sanding and finishing.
Ideal for professional body shops, workshops, garages and DIY automotive repairs.
Key Features
- Genuine Isopon BPO Hardener
- 20g sachet – quantity: 1
- Part number: H3840/S
- Designed for use with Isopon P38 and P40
- Activates the curing process of compatible body fillers
- Ideal as a replacement or spare hardener
- Suitable for automotive body and panel repairs
- Suitable for professional and DIY use
- Convenient individual sachet
Applications
Suitable for use when mixing compatible Isopon body fillers for:
- Car body repairs
- Body panel repairs
- Filling dents and surface damage
- Automotive restoration
- Workshop and DIY bodywork
Product Information
- Brand: Isopon
- Product: BPO Hardener
- Part Number: H3840/S
- Weight: 20g
- Quantity: 1 Sachet
- Compatible Products: Isopon P38 & P40
- Product Type: Body Filler Hardener
- Application: Automotive Body Repair
Important: This listing is for 1 x 20g hardener sachet only. Body filler is not included. Always follow the filler manufacturer's recommended mixing ratio and application instructions.

