My 1990 R129 500SL has a foam plastic/rubber material glued to the inside of the hood/bonnet. This once would have absorbed engine noise, but now just leaves sticky residue all over the motor. I was about to scrape what was left off the inside of the hood/bonnet and hopefully find some solvent to remove the glue.

Should I bother replacing the sound deadening foam? Is there a non-genuine cost effective alternative?

Thanks in advance

 

Engines get hot. Paint doesn't like hot. Get a new pad.

 

To my understanding the hood pad works for noise reduction, but mostly to keep the engineīs heat off the paint on the hood.

I recently replaced mine and itīs a simple job - scape as much of the old pad off with a hard plastic brush, dont worry about whats left, applied rubber cement glue (for shoe repair) with a paint brush on the underside of the hood and the pad gradually - starting from the back (near windshield) towards the front end. Was done in 1 hr. and left the hood open for another couple of hours while the stuff dried. I did have the help of one other person and donīt recomend you do this by yourself. Also wear masks to protect you from the glue fumes or (as I did) take various, quick breaks between applications.

Good luck.

 

OK, Genuine Pad is US$225. eBay item US$110 (may fit RHD car). Does anyone know if RHD & LHD versions are the same? I think they will be.

 

Maybe on a diesel...

 

Whatever itīs main purpose is, in my car the appearance under the hood changed dramatically with the new pad on and I figure it takes the risk out of the hood being overheated and even the battery terminals touching metal and causing a problem. Worth the $$ in my opinion.

 

OH, and I paid $90.00 for mine. So look around in the internet.