JLM Lubricants

JLM Underbody Spray Black


 / 500ml

  • Superior rust- and gravel protection
  • Durable closed and elastic coating layer
  • Apply drip free, quick drying
  • Can be over painted
  • Sound dampening effect
JLM Underbody Spray Black J04603 JLM Underbody Spray Black

JLM Underbody Spray Black is an anti-gravel coat aerosol based on synthetic resins and rubbers. This coating is quick dry and is especially developed for a long-term gravel protection of front and rear spoilers, sills, side skirts, wheel arches, etc.

Product information

This product is thixotropic and can be applied drip-free. The product has a good adhesion and can be painted over with any kind of lacquer system when the film is completely dried. Drying can take place at room temperature or at elevated temperatures up to 60°C. After application the result will be a closed, elastic and structured film with excellent rust- and gravel protection. JLM Underbody Spray Black also reduces the noise inside cars because of the sound dampening/proofing properties.


Use on room temperature. Shake before use. Surface must be dry and clean, free from dirt, rust, grease etc. Spray an even layer on the object of surface to be coated. Recommended thickness = approximately 0,5 mm at application. Apply minimal two layers. Before over painting allow the coating tob e completely dry. Leave to evaporate/dry. Do not spray on the exhaust, brake system or on motor parts. For high corrosion protection bare metal should be greated with an anit corrosion primer prior tot he use anti gravel. After use, to clean the nozzle and prevent blockage, hold the can up siode down and spray until only gas (propellant) is coming out of the can. Can be removed with aromatic solventsas white spirit, boiling point naphtha, xylene etc.

Favicon JLM Lubricants grey

JLM Lubricants

Great addition

"This is a great addition to the products in my workshop. We continuously see fantastic results in the recovery of emissions and engine performance, among other things."

- Paul Finn

JLM Lubricants


"I was very skeptical, but after using the product and starting my car, I couldn't believe my eyes ... the yellow light in my car was no longer on!"

- Kevin Kalo

JLM Fixing cars

Surprising­ly good

"I never thought that JLM would surprise me so much. It gets better and better every time. I will continue to use these products. The fantastic results speak for themselves. Keep up the great work."

- Andrew Watts


These are the most common questions we get.

Do any of the JLM additives help the performance of the high pressure diesel fuel pump?

J02330 Rapid is perfect for pump and injectors!

Is it OK to use the JLM Extreme Clean and the DPF Cleaner together?

No, this will not have a positive effect. In fact it may cause an adverse effect. And also the risk of overdosing! Never combine fuel additives


Will JLM Bluboost dissolve existing crystal infestation or is it more like a preventative product?

JLM’s Bluboost additive cleans and prevents crystal formation in the AdBlue® dosing system. It also conditions the AdBlue® fluid for a longer time to ensure proper working of the AdBlue® and SCR system. This helps prevent performance loss and the often-subsequent expensive repairs. It also reduces foaming at low temperatures

Is the JLM Engine Oil Flush safe for use with wet belt engines?

Our JLM OIL FLUSH is safe to use with ‘wet belts’ (TBIO). This is mainly because we use non solvent and premium pack of oil cleaning additives.


Does the Petrol Emissions Reduction Treatment also clean the catalytic convertor?

The catalytic converter is not a filter, it functions by converting harmful emission gases into less harmful gases. The filter can become contaminated if for example there has been an oil leak, and when this happens the filter needs to be replaced. There is no additive or chemical that will remove physical contamination from a catalytic.

Go to Top