Koch Chemie Motorplast | Engine Bay Plastic Protectant (500 ml)

Engine bay that looks clean even after drying

A clean engine bay can quickly lose its good impression if a dull appearance or greasy film remains on plastic and rubber parts. Koch Chemie Motorplast is a product for the long-term preservation of plastics, rubber, and hoses in the engine bay, which, once dry, creates a protective film with a naturally velvet-matte appearance.

The protective film repels water, helps reduce the buildup of dirt, and protects parts against corrosion. Motorplast is thermally stable up to 250 °C, making it designed for the engine bay environment, where materials heat up during operation. It contains no waxes that would attract dust and dirt to the surface.

What Motorplast offers

• Velvet-matte appearance – revitalizes plastic and rubber parts without a greasy effect.
• Elastic protective film – repels water and helps reduce the buildup of dirt.
• Protection against corrosion – for the engine bay and its components exposed to external elements.
• Thermal stability up to 250 °C – suitable for plastics, rubber, and hoses in the engine bay.
• Wax-free composition – ensures the surface does not unnecessarily attract dust and dirt.

Clean first, then preserve

Motorplast is not a cleaner. It works best on a thoroughly cleaned engine bay from which you have removed loose dirt and road film. To prepare the surface, choose a suitable universal cleaner based on the level of soiling.

After cleaning, you can apply Motorplast to both damp and dry plastic and rubber parts. Let it air dry afterwards so it can form an elastic protective film and unify the appearance of the surface without a greasy feel.

Frequently asked questions

Can I use Motorplast on damp parts?
Yes. You can apply the product to clean damp or dry surfaces.

Is it necessary to dilute Motorplast?
Not always. If you need a lower concentration, you can dilute it with water in a 1:1 ratio.

Which parts of the engine bay is it intended for?
For plastic parts, rubber hoses, and other suitable surfaces in the engine bay. You can also use it on engine blocks for boats, motorcycles, and other machinery.

What about sensitive electronic components?
Dry sensitive parts, such as ignition coils, with compressed air after application.

How to apply Motorplast correctly

1. Thoroughly clean the engine bay first.
2. Spray Motorplast from a distance of 20 to 30 cm onto a clean, damp, or dry surface.
3. Apply the product evenly to the plastic and rubber parts you wish to preserve.
4. Let it air dry to create an elastic protective film.
5. If you need a lower concentration, dilute the product with water in a 1:1 ratio.
6. Dry sensitive electronic parts with compressed air after application.

Safe use

Verify compatibility with the material before use. Avoid breathing in the aerosol and use protective gloves and eye protection. Keep the product out of reach of children and prevent its release into the environment.

Summary in points

• Type: engine bay preservation
• Volume: 500 ml
• Application: plastics, rubber, and hoses in the engine bay
• Appearance: velvet-matte without a greasy effect
• Protection: repels water and helps protect against corrosion and dirt
• Thermal stability: up to 250 °C
• Dilution: as needed with water in a 1:1 ratio