Car Builders Premium Under Bonnet Insulation is the go-to solution for protecting your vehicle’s bonnet from engine heat and vibration while also improving cabin comfort. Whether you’re restoring an older vehicle, replacing worn factory insulation, or simply upgrading to a cleaner, quieter bay — this peel-and-stick bonnet heat shield is easy to install, highly effective, and built to last.
Made from non-ignitable polyester fibre and rated to 405°F (207°C), this self-adhesive insulation sheet conforms to almost any bonnet shape, sticks securely, and can withstand high-pressure washing without degrading or detaching.
Its sleek, all-black finish offers a tidy, OEM+ look, while the sound-deadening properties reduce engine noise and vibration for a noticeably more refined driving experience.
Features & Benefits:
High Heat Resistance – Rated up to 405°F (207°C)
Water & Washproof – Survives high-pressure cleaning
Non-Ignitable Polyester Fibre – Safe and durable
Self-Adhesive Backing – No glue, no mess
Professional Black Finish – Looks great in any engine bay
Flexible & Trim-to-Fit – Conforms to curves and corners
Reduces Engine Noise – Makes the cabin quieter
Common Applications:
Bonnet underside (engine bay)
Firewall/hood heat shielding
Restoration & classic car upgrades
4WDs, hot rods, street machines, and daily drivers
Installation Tips:
Start from the centre of the bonnet and work outward
Use a roller to apply pressure as you peel back the adhesive
Cut with a sharp blade after install for clean edges
Clean the surface thoroughly with wax & grease remover before applying
Optional: Add 5–10cm extra material when pre-cutting to allow for contours
FAQ Summary:
Q: What does under bonnet insulation do?
It protects paint from engine heat and reduces engine noise by dampening vibrations.
Q: Will it fit my vehicle?
Yes. The sheet can be trimmed to suit any bonnet. Available in two sizes.
Q: Does it need glue?
No. It has a strong, self-adhesive backing.
Q: Can I pressure wash my bonnet with it installed?
Yes. It’s designed to hold up under high-pressure washing.
Pickup or Delivery
Available for pickup at Lowe Fabrication in Western Sydney or fast shipping across Australia. Ideal for pro builders, restorers, and enthusiasts.







