Koch-Chemie (MP) Motorplast | Engine Bay Conserver 500mL

Koch Chemie (MP) Motorplast a water-displacing engine bay conserver that refreshes plastics, rubber hoses and engine components while leaving a naturally clean, protected finish.

Features & Benefits

• Engine bay conserver for plastics, rubber hoses and housings
• Water-displacing formula can be used on damp surfaces
• Restores a clean, like-new appearance
• Dries without a greasy lubricating film
• Helps protect against dirt, corrosion and environmental influences
• Forms a flexible protective film
• Ideal after engine bay cleaning

Koch Chemie Motorplast is one of the easiest ways to restore a clean, professional finish to an engine bay after cleaning. Engine bays contain a mix of plastics, rubber hoses, housings and painted areas that can look tired after degreasing. Motorplast refreshes these surfaces and leaves a clean, naturally dressed appearance.

The formula is water-displacing, which makes it especially useful after engine bay washing. Once applied, it dries completely and forms a flexible protective layer that helps reduce dirt adhesion and protects treated components from environmental influences.

Unlike greasy engine dressings, Motorplast is designed to dry cleanly. This helps prevent dust and dirt from sticking heavily to the surface after application. Pair with Koch Chemie Green Star for engine bay cleaning before finishing with Motorplast.

Pro Tip

After cleaning, use compressed air or a blower to remove heavy water pockets before applying Motorplast. The product can handle damp surfaces, but controlled drying helps create a cleaner, more even finish.

Frequently Asked Questions

Can Motorplast be used on wet surfaces?

Yes. It is water-displacing and can be used on damp engine bay surfaces.

Does Motorplast stay greasy?

No. It is designed to dry without leaving a lubricating film.

What should I clean the engine bay with first?

Koch Chemie Green Star is a strong choice for engine bay cleaning before Motorplast.

Engine Bay Application

1. Ensure the engine is cool before cleaning or dressing.


2. Clean the engine bay first using a suitable cleaner such as Green Star.


3. Rinse carefully and remove heavy standing water where required.


4. Spray Motorplast evenly over plastics, rubber hoses and suitable engine bay surfaces.


5. Allow the product to self-level and dry naturally.


6. Wipe any excess from areas where product has pooled.

Best Practice

1. Avoid spraying directly into sensitive electrical components.


2. Use controlled application around belts, intakes and exposed electronics.


3. Allow the engine bay to dry fully before final inspection.