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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 11-12-2014, 08:43 AM   #1
patwhite330ci
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DISA Valve - Genuine vs. Aftermarket

Will I regret saving $150 buying the aftermarket brand DISA valve replacement over the Genuine BMW DISA valve? Is this something I should spend the extra money on and not have to worry about any more, or are the aftermarket versions of this just as good as Genuine BMW?
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Old 11-12-2014, 08:49 AM   #2
markusmarkus
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There are 2 issues with the disa valve:
- the gasket between the valve and the manifold leaks resulting in a vacuum leak
- the pin holding the rotating valve falls out

What brand did you buy?
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Old 11-12-2014, 08:52 AM   #3
patwhite330ci
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I have not bought one yet, trying to decide on that now.

The disa is making a rattle sound, so I am assuming the pin has become worn down, and the flap that controls air flow is rattling.

I am looking at either ECS Tuning brand: http://www.ecstuning.com/BMW-E46-330...ake/ES2763043/
Genuine BMW: http://www.ecstuning.com/BMW-E46-330...ntake/ES25793/
or Vaico: http://www.ecstuning.com/BMW-E46-330...ake/ES2580544/
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Old 11-12-2014, 08:53 AM   #4
bmwbob89
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Just get the rebuild kit and save even more and have a better DISA.
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Old 11-12-2014, 08:57 AM   #5
tonyguns
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Quote:
Originally Posted by bmwbob89 View Post
Just get the rebuild kit and save even more and have a better DISA.
+1 on this. I bought the rebuild kit and have 40,000 miles on it now...
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Old 11-12-2014, 09:00 AM   #6
patwhite330ci
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The rebuild kit that replaces the plastic pin with a metal one?
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Old 11-12-2014, 09:14 AM   #7
tonyguns
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Quote:
Originally Posted by patwhite330ci View Post
The rebuild kit that replaces the plastic pin with a metal one?
I bought 2 kits for my cars, I have a 2001 330Ci, and an '02 325i, I bought a cheap-o plastic kit on ebay, and the expensive one... Obviously the expensive one was made of better material, but the plastic one wasn't bad, and both are still working fine so far.
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Old 11-12-2014, 09:31 AM   #8
rsyed07
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You will regret it. Just spend the extra money and save yourself the headache. You'll be DISA worry free for another 8 years. Aftermarket parts don't go too well with BMWs. Genuine or rebuilding is the way to go.
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Old 11-12-2014, 12:30 PM   #9
avincent52
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My mechanic, who's generally pretty frugal, thought it made sense to get the BMW part.

FWIW, you can save a bunch of money by buying it at Morristown BMW's online outlet where it was like $237, about $100 less than even a CCA discount price elsewhere.
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Old 11-12-2014, 01:22 PM   #10
SilberVogel
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^ Exactly what I was going to say. That or spend the $80 on the G.A.S. repair kit: http://germanautosolutions.com/bmw_s...repair_kit.php.

Here's current prices for the OE Disa Valve (#11617544805):

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Last edited by SilberVogel; 04-12-2015 at 02:04 AM. Reason: Price update
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Old 11-12-2014, 01:51 PM   #11
TRITONAL
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I bought the GAS kit for my failed DISA flap, it is arriving today. I haven't heard of anyone having troubles with it, and have the added security of aluminum parts now instead of plastic parts wearing down. My crank lever was the part that failed, it looks very similar to the "extreme wear" picture on their website.
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Old 12-02-2014, 12:55 PM   #12
camrydriver111
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Does the vacuum function on the DISA often go bad?
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Old 12-02-2014, 12:58 PM   #13
WDE46
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Quote:
Originally Posted by camrydriver111 View Post
Does the vacuum function on the DISA often go bad?
Sometimes. That's why you should check that valve before you buy the GAS kit.
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Old 12-02-2014, 01:24 PM   #14
SilberVogel
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Quote:
Originally Posted by camrydriver111 View Post
Does the vacuum function on the DISA often go bad?
As WDE46 mentioned, it does happen, but from what I've read on the forums over the years, I wouldn't say it's too often. G.A.S. has a pretty good warranty on their kit that helps address that concern, though. From their website:
The German Auto Solutions - DISA Valve Repair & Upgrade Kit Warranty

The kit is 100% returnable for a full refund in uninstalled condition for any reason, no questions asked! (shipping charges not refundable)

The kit components are guaranteed for life.

If any other part of your DISA valve fails within 5 years of purchase date, we will credit 100% of your original purchase price toward a brand new OEM BMW DISA valve or a new G.A.S. DISA Gold Valve. This warranty includes failure of any DISA component, including the vacuum pot, electric vacuum solenoid and bell crank seal. Nobody but German Auto Solutions would ever warranty used parts that they didn't make and didn't sell you!
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Old 12-02-2014, 02:26 PM   #15
seattle330
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Yeah, pull it out and figure out what the problem is. If it's the diaphragm, get an OEM DISA with the GAS kit or the GAS Gold one (same thing). If the diaphragm's ok and something else is shot, get the GAS kit.
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Old 12-02-2014, 02:57 PM   #16
Handsomecore
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[QUOTE=patwhite330ci;16404715]Will I regret saving $150 buying the aftermarket brand DISA valve replacement over the Genuine BMW DISA valve? Is this something I should spend the extra money on and not have to worry about any more, or are the aftermarket versions of this just as good as Genuine BMW?[/

I just replaced mine with the viaco brand DISA from Fcp euro. I couldn't find a lot of info on it, guess a lot of people don't buy this brand . One member on here brought it and had it for 1 year with no problems . So based on his experience with the viaco brand I figured I"d give it a try .
If u do buy it make sure it holds vacuum . I received mine and it didn't hold the flap while I covered the little hole .i was pissed had to drive all the way to Fcp to get a replacement . Funny thing is when I got there he was like how do u know it's suppose to hold the flap . I said because I know ( courtesy of this site ). So he said I'm going to order a BMW DISA & a viaco DISA and compare them . Next day he called me and said " yeah u was right it is suppose to hold the flap , come pick up your replacement . So I installed with a BMW green O-ring . Boy did it make a difference car is much faster , picks up very quick . I had to test it so I did 80 on the highway. By the way my old DISA wasn't holding the flap and the o ring was gone had RVT on it . I'll let u know how long this DISA last .
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Old 12-02-2014, 03:11 PM   #17
djdonis
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G.A.S DISA kit is the way to go.
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Old 12-05-2014, 10:59 AM   #18
Handsomecore
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Quote:
Originally Posted by patwhite330ci View Post
Will I regret saving $150 buying the aftermarket brand DISA valve replacement over the Genuine BMW DISA valve? Is this something I should spend the extra money on and not have to worry about any more, or are the aftermarket versions of this just as good as Genuine BMW?

I spoke to soon..... Get the OEM disa the viaco one is made in tiawan I didn't even know that . The sticker on the actual part says made in Germany , but on the box it says made in Tiawan .so some funny business is going on smh . Well at least u don't gotta go through the headache of returning this part . FYI part was working day of install FLAWLESSY next day back to that sluggish low rpm hesitation . Check out pics below
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Old 12-15-2014, 03:34 PM   #19
Handsomecore
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Originally Posted by patwhite330ci View Post
Will I regret saving $150 buying the aftermarket brand DISA valve replacement over the Genuine BMW DISA valve? Is this something I should spend the extra money on and not have to worry about any more, or are the aftermarket versions of this just as good as Genuine BMW?

Did you ever buy the DISA valve ?
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Old 12-15-2014, 09:32 PM   #20
LeMansteve
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IMO if the part has an electrical plug on it, get OE or Genuine BMW.
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