VW owners...OE grill block for Mk4 Golf/Jetta

[SL8Brick]

Hi fellow VW drivers...:)

If you didn't already know, I've been a 'parts consultant' for VW/Audi for the past 17yrs. This new product is something that I just came across while browsing through the most recent parts circulars on VW's employee-only website. To the best of my knowledge, it has yet to be advertised in any VWoA consumer accessory literature....so consider it a GasSavers.org exclusive.:p

They're marketed as "Cold Weather Masks" and designed for Winter use on Mk4(1999.5>2005) Golf/Jetta TDi models in the interest of quickly achieving/maintaining warm cabin temps. I don't have any postable pics of these masks yet, but basically they cover about 80% of the upper center portion of the main grill(above the front bumper). They're custom-fit and the material is similar to the OE front end covers(aka:bra). According to the circular, they attach via Velcro-like fasteners. Installation/removal is supposed to be quick & simple.

Now, I'd like to stress that use of this particular product would be considered 'experimental' if used on non-TDi vehicles and/or if they're used during the non-Winter months or in areas that lack frigid Winter temps. And even though this is an OE accessory, there are potential warranty voiding implications if used outside of the parameters in which they were designed for. The common sense rules of grill block use & installations would apply here(ie: one eye on the temp gauge...one eye on the road).

VW part#s are as follows:
ZVW193899 - 1999-2006 Mk4 Golf(will fit GTI as well)
ZVW193898 - 1999.5-2005 Mk4 Jetta Sedan & Wagon

MSRP at time of posting is ~$30 per kit.

If your interested, feel free to contact your local VW parts dept. to order them. VW warehouses currently show ample stock of both kits.

Enjoy!!

[SVOboy]

Very cool! Sock it to that guy whining about grill blocks...

[Erdrick]

Hate to be a bother, but is there any chance of you tracking down an Mk3 for me? I missed the cutoff by a year, as my TDi is a 98.

Otherwise I will have to shrinkwrap the frontend of my car with the stuff they use on boats. I figure that I won't have to do it often, what with the 10,000 mile oci that I am going to be using.

[trebuchet03]

I'd totally appreciate a picture if it's not too much trouble :)

I just so happen to have a MkIV Jetta :)

Does it cover the logo and conform to the hood notch too (something tells me no, but I'm curious :p).

[SL8Brick]

Hate to be a bother, but is there any chance of you tracking down an Mk3 for me? I missed the cutoff by a year, as my TDi is a 98.



Sorry, Erdrick...VW is only offering them for Mk4s. If they come out with something for Mk3s(...or any other model for that matter), you'll be one of the first to read about it here.

I'd totally appreciate a picture if it's not too much trouble

I just so happen to have a MkIV Jetta

Does it cover the logo and conform to the hood notch too (something tells me no, but I'm curious ).

Unfortunately, the only photos currently available are in pdf form on VWoAs dealer website. I'd like to link the circular here, but I'm bound by VW's privacy agreement.:mad: However, your local VW dealership's parts dept. might be able to print the circular for you and show you the pics. Ask for accessory circular #024-08-06-UCF.

No, the mask does not cover the center emblem on the grill...but it does cover all of the grill slats to either side of it. The only open gaps are above & below the center slats. IMO, the mask for the Jetta looks much more appealing the the Golf mask.

[Rick Rae]

Well that lets me out, given the Cabrio's based on the Mk3. :(

I'd previously thought about buying a "bra" and lining the back of the screening to make a clean-looking and easily-removable grill block though, so it's nice to see the idea validated by none other than VW themselves. :thumbup::D

For a temporary test, I'm currently using clear packing tape on the outside of the above-bumper grill vents. Only the slot that is part of the hood opening remains uncovered. Once it gets a little colder I plan to take some coroplast to the lower openings.

SL8Brick, maybe you can answer a question for me. Below the bumper there's a wide center grill with a smaller one to each side. The center one clearly feeds the radiator. The one on the driver's side is a fake -- it's blocked from the factory. Do you know what specific purpose the passenger-side grill serves? I can't tell if it's to cool something specific (e.g. alternator, power steering pump, whatever) or if it's supposed to be part of the air intake (doesn't seem likely based on placement) or what. I'd rather know exactly why it's there before I start mucking about with it.

Thanks for sharing the very cool information on the grill block. Even if it doesn't apply to me, it's greatly appreciated, and I'm sure the other VW owners here feel the same way.

Cheers,
Rick

[SL8Brick]

...so it's nice to see the idea validated by none other than VW themselves.

True, but VW isn't releasing these with improved fuel economy & aerodynamics in mind. They're designed to help warm up the tootsies of freezing TDi owners when the mercury drops in the Winter. :p

SL8Brick, maybe you can answer a question for me. Below the bumper there's a wide center grill with a smaller one to each side. The center one clearly feeds the radiator. The one on the driver's side is a fake -- it's blocked from the factory. Do you know what specific purpose the passenger-side grill serves? I can't tell if it's to cool something specific (e.g. alternator, power steering pump, whatever) or if it's supposed to be part of the air intake (doesn't seem likely based on placement) or what. I'd rather know exactly why it's there before I start mucking about with it.



Rick, I did inquire with our service dept. but I was unable to come up with an official answer. But if I had to guess, the answer might be "all of the above". I believe your air intake snorkel draws in air from behind the RH fender skirt. Although the location of the grill/intake duct does not equal a 'ram air' system, the open RH grill would allow cooler ambient air to that specific area. Also, those wacky German VWAG engineers have recently gone extra lengths to provide additional cooling to the alternator. Heck, the new Audi A8L has a water-cooled alternator. So I wouldn't be surprised if that was thier intention as well.:thumbup:

Another sidenote worth mentioning: The center lower grill in your bumper is identical to the Mk4 Golf/GTI. The 2002-03 337/20th Ann. edition GTIs came with a modified lower center grill with thinner slats to allow a cleaner flow of air to the radiator(VW part#1J0853677E B41). Something to keep in mind if you're planning on experimenting with an upper grill block.

[Rick Rae]

True, but VW isn't releasing these with improved fuel economy & aerodynamics in mind. They're designed to help warm up the tootsies of freezing TDi owners when the mercury drops in the Winter.
Understood.

Thanks for looking into that passenger-side grill for me. Sounds like I won't be messing with it, just to stay on the safe side.


Another sidenote worth mentioning: The center lower grill in your bumper is identical to the Mk4 Golf/GTI. The 2002-03 337/20th Ann. edition GTIs came with a modified lower center grill with thinner slats to allow a cleaner flow of air to the radiator(VW part#1J0853677E B41). Something to keep in mind if you're planning on experimenting with an upper grill block.
Handy to know; thanks. And sans the slot just below the hood, the upper grill block is already in place, and has been for a couple of months now. :) No obvious effect on FE to date though, but I haven't done any coast-down tests or controlled/monitored high-speed driving yet, either.

Rick

[MnFocus]

Unfortunately, the only photos currently available are in pdf form on VWoAs dealer website. I'd like to link the circular here, but I'm bound by VW's privacy agreement.:mad: However, your local VW dealership's parts dept. might be able to print the circular for you and show you the pics. Ask for accessory circular #024-08-06-UCF.



freeware pdf995edit will rip photos from pdf docs and send them to a printer port and allow a normal picture save ...just sayin ;)

[s1120]

.

SL8Brick, maybe you can answer a question for me. Below the bumper there's a wide center grill with a smaller one to each side. The center one clearly feeds the radiator. The one on the driver's side is a fake -- it's blocked from the factory. Do you know what specific purpose the passenger-side grill serves? I can't tell if it's to cool something specific (e.g. alternator, power steering pump, whatever) or if it's supposed to be part of the air intake (doesn't seem likely based on placement) or what. I'd rather know exactly why it's there before I start mucking about with it.

Thanks for sharing the very cool information on the grill block. Even if it doesn't apply to me, it's greatly appreciated, and I'm sure the other VW owners here feel the same way.

Cheers,
Rick


Hellow there rick. I am also a VW parts guy, and can answer that one for you. On the 2.0L cars that grill was a dummy grill. All blocked off. On the 1.8T, and the 1.9TDI that grill is open becouse thats where the intercooler is. On the VR6 powerd cars, there is a aux radiator located there, so they also get a open grill. If you see one on a normal 2.0L powerd car, its just amatter of the orangle one having been replaced with the open one. They do fall out farly often.

[SL8Brick]

I am also a VW parts guy,...


:thumbup: The more the merrier! How long have you been in the biz, s1120?
:)

[s1120]

a little over 14 years now. Or some would say WAYYYYY to long!!!! :D

[Rick Rae]

Hi, Paul; thanks for the input.

On the 2.0L cars that grill was a dummy grill. All blocked off. If you see one on a normal 2.0L powerd car, its just amatter of the orangle one having been replaced with the open one. They do fall out farly often.
If you're referring to the one on the driver's side: Yes, it's a dummy, I'm aware of that and stated such in my question. I was asking about the passenger-side grill.

If you're talking about the one on the passenger side: No, sorry. It's definitely not a dummy grill, we're the original owners, and it's never been replaced.

Rick

[s1120]

sorry I did not notice yours is a Cabrio. I assumed it was a Jetta sorry. Ya, they are all open on the right side on those and the Golfs. Why? I dont know. There is nothing over there at all, and as I said the jettas only had the open ones on the cars with eather a intercooler, or aux radiator over there.

[Rick Rae]

sorry I did not notice yours is a Cabrio. I assumed it was a Jetta sorry.
No worries! :)

Ya, they are all open... Why? I dont know. There is nothing over there at all, and as I said the jettas only had the open ones on the cars with eather a intercooler, or aux radiator over there.
I think I might try blocking off the center grill once it gets colder and see how everything does, then rig up some remote temperature sensors on e.g. the alternator, P/S pump, whatever might be on the passenger side of the engine compartment, and try blocking off the little grill. Between that and the coolant temp and intake air temp readings, I ought to be able to tell if anything squirrely is going on.

Thanks,
Rick

[lovemysan]

No worries! :)


I think I might try blocking off the center grill once it gets colder and see how everything does, then rig up some remote temperature sensors on e.g. the alternator, P/S pump, whatever might be on the passenger side of the engine compartment, and try blocking off the little grill. Between that and the coolant temp and intake air temp readings, I ought to be able to tell if anything squirrely is going on.

Thanks,
Rick

This would allow you in cabin monitoring. The lead is only 6ft long though. It might be possible to lengthen it. $12 at walmart.

http://i75.photobucket.com/albums/i310/lovemysan/saturn/IMG_4178.jpg

[Rick Rae]

I have several different versions of those. I've used them over the years for checking temperature in aquariums, refrigerators/freezers, etc. They're handy to have around and yes, as long as they don't use tinsel wire for the leads (most don't), they can easily be extended a reasonable distance.

It's a good idea but I suspect the upper end of the range won't be sufficient under the hood. Most of mine top out a little above what you'd expect to encounter naturally with weather. (The range could likely be shifted with a resistor or two, but the numbers will need to be interpreted... though that's not a big deal.) Plus they tend to get very non-linear at the extremes (and would also with the range-shifting thing).

I think at engine-compartment temperatures a thermocouple-based sensor probably makes more sense (I have one of those too, I used to work in R&D :)).

Rick

[bearleener]

I've installed an upper grille block on my 1996 Golf III (1.8 l, 75 hp engine, no A/C).

Aerodynamic effect: unknown (don't have a ScanGauge or similar). Somehow the car feels more stable (not as dodgy) at highway speeds. After a 1/2 tank at cool temperatures my F.E. seems to be about the same as at summer temperatures, which is good. I suspect that the most benefit is from faster engine warmup rather than improved aerodynamics.

Thermodynamic effect: engine heats up noticeably faster, but not dramatically. When the engine is warm the indicated temperature is maybe 1 degree more than before (91 C vs. 90 C). That's probably because the thermostat is at the bottom, which is getting cold air and therefore thinks it should increase the temperature a tad more than it really should.

The upper block is a plastic plate behind the grille (I loosened the 4 clips at the top, cut the plastic to size and slipped it behind, and attached it at the left and right ends with two tie wraps to the vertical slats. So the car looks totally stock from the outside.

Next steps: Partial below-bumper grille block, ideally with a BMW-like thermostatically-controlled opening mechanism.

BTW, on my car the lower right small grille opening is to let the noise from the horn out :-)

[SL8Brick]

BTW, on my car the lower right small grille opening is to let the noise from the horn out :-)

Now that's a more logical explanation for the open grill.:o

[ArtFox]

http://pics.tdiclub.com/data/3334/medium/PDR_3219.JPG

[Lug_Nut]

http://pics.tdiclub.com/data/3334/medium/PDR_3219.JPGArtFox, the image isn't visible to those of us that aren't presently logged on the image server Fred's uses.
All I see is a blue box with the text "image only for use on TDIClub pages by members". I typed it out since you as the image owner might have the ability to see your image instead of the message and wouldn't know what I was talking about.

You and I (and Brock and some others) who have joined Fred's can always log in to the Fred's image server and see the image. Others here that aren't members of Fred's TDIClub, can't see it and you aren't able to link to it here from that location (some protection limitation or something I guess). It may be that only TDIClub can link to that TDICLub image server.

Download/Copy the image to your computer. Save it there with a non-tdiclub file name, then upload from your computer to the Gassaver's image file host and use that Gassaver's link.

[ArtFox]

Ooop... I will correct this soon

[Jetta90GL]

It's a good idea but I suspect the upper end of the range won't be sufficient under the hood. Most of mine top out a little above what you'd expect to encounter naturally with weather. (The range could likely be shifted with a resistor or two, but the numbers will need to be interpreted... though that's not a big deal.) Plus they tend to get very non-linear at the extremes (and would also with the range-shifting thing).

I think at engine-compartment temperatures a thermocouple-based sensor probably makes more sense (I have one of those too, I used to work in R&D :)).

Rick

If you dont mind paying 10 times the amount of the walmart style, this one (http://www.autometer.com/cat_gaugedetail.aspx?gid=2565&sid=4) has a range from 0-250 deg. It comes with a 20 foot cord and the sensor.