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B58 Engine Cover

My B58 engine cover has not been replaced as far as I’m aware and I’ve not been contacted regarding a service campaign.
I wasn't contacted either. It was at the first service, and she said it was on the to-do list. I must open the bonnet and take a look, though, as three other things on the to-do list were not completed, and it needs to go back.
 
I thought it was only dei
I wasn't contacted either. It was at the first service, and she said it was on the to-do list. I must open the bonnet and take a look, though, as three other things on the to-do list were not completed, and it needs to go back.
I thought it was only B57 engines had the cowling issue ?. Make sure they check the to do list more thoroughly this time inc the front prop shaft just in case. 🤔
 
I thought it was only dei

I thought it was only B57 engines had the cowling issue ?. Make sure they check the to do list more thoroughly this time inc the front prop shaft just in case. 🤔
I take my B57 in for its 2nd year service next week, I'll check if my engine cover gets replaced.
 
My B58 engine cover was replaced by the dealer last month under a service bulletin. So, there must be another issue if this isn't the same one (or the dealer messed up. They made a point of contacting me to say they had the engine cover in stock when going through the things that needed looking at).
Oh that's interesting, I'd like to see that bulletin if you have it.
 
Oh that's interesting, I'd like to see that bulletin if you have it.
I didn't see any bulletin. I booked the car in for an annual service, and when going through my list of issues, I was told they had a new engine cover in for me as it was on their list of campaign items.
 
I took mine off so I can quickly check components when the hood is open. Do we really need an engine cover?
 
Two attachment points on the OEM B58 engine cover failed on my G. During a recent visit to the dealership, I asked whether a new engine cover would be covered under warranty. The dealership’s response was, “No, but we would be happy to order a new one for you at a cost of approximately $700.”

My answer: “No, thank you.”
No was the correct answer by you, but it's a headscratcher to me why this wouldn't be covered under warranty. What was the dealer's logic?
 
Does it potentially cause the hood to get too hot damaging the paint?
I took mine off when I first got the truck over a year ago because I never think that a "pretty" heat blanket benefits an intercooled turbo motor , and despite living in NM, the hood doesn't get any warmer than with the cover, and no paint damage at all to the Scottish White color, your mileage ( and/or darker colors) may vary
 
No was the correct answer by you, but it's a headscratcher to me why this wouldn't be covered under warranty. What was the dealer's logic?
Why would someone pay $700.00 for a piece of plastic? You can buy brand new Carbon Fiber for a fraction.
 
I took the insulation off the BMW cover to eliminate any interference and not surprisingly, the engine sounds better and you can hear the turbo more. That may not be everyone’s cup of tea, but for me, it was a win-win.

Willing to bet it sounds even better with no cover at all then..
 
Does it potentially cause the hood to get too hot damaging the paint?
My alloy bonneted old Porsche 928 has alloy intake runners a few cm below the metal. With no insulation. Paint is untouched despite plenty of heat, as these engines run fairly hot.
 
Willing to bet it sounds even better with no cover at all then..
There isn't much sound deadening to ABS plastic but maybe . There is no benefit to the engine cover aside from the esthetic value and I was underwhelmed by the IG OEM cover. I am not a great fan of insulation covering a turbo engine so there is that. My like new / used BMW cover was $150 off a '24 sedan.
 
The internet says;

Noise Reduction (Sound Dampening): Modern direct-injection engines are notoriously noisy, producing "ticking" sounds from high-pressure fuel pumps and injectors. The plastic cover, often lined with foam or felt, acts as a sound barrier to muffle these noises.

Protection of Sensitive Electronics: BMW engines are packed with complex wiring, sensors, and ignition coils. The cover protects these from rain, snow, car washes, and dirt, preventing electrical shorts and preventing grime from building up around spark plug wells.

Aesthetics and Branding: When opening the hood, the cover hides the "rats nest" of wires, vacuum lines, and unconventional engine shapes, presenting a clean, branded, and orderly look to the consumer.

Heat Management (Warming/Protection): The cover helps the engine reach its operating temperature faster, which improves fuel efficiency and lowers emissions on short trips. Some covers also protect the underside of the hood from extreme heat, reducing the risk of paint damage.

Pedestrian Protection: In some designs, the cover acts as a secondary barrier, providing a softer landing surface than the hard engine components in the event of a pedestrian impacting the hood.

Heat Retention: Many mechanics and enthusiasts argue that the cover traps heat, potentially accelerating the degradation of plastic gaskets and rubber hoses, which is a known issue for older BMWs.

Rodents: Some owners report that the insulation under the cover makes an attractive nesting place for rodents.

And there you have it. The consolidated knowledge of all the internet geniuses on the planet. 🤪
 
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