C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

SEALING vs. Replacing infamous fuel filler neck on '05's.

Old Dec 21, 2016 | 08:19 PM
  #1  
AlpWhiteM3's Avatar
Thread Starter
Newbie
 
Joined: Dec 2016
Posts: 7
Likes: 0
-2004 BMW M3 6MT, 2005 C230K 5AT, 2004 VW GTI VR6, 2005 Mazda 6i, 1986 Chevy S10
SEALING vs. Replacing infamous fuel filler neck on '05's.

Well, just got a smoke test done to reveal a pinhole sized leak in the filler neck. I know this is wayyyy too common on these 2005's...
But why spend $2-400 on the part alone instead of just using a high quality sealant to seal the hole? I'm not trying to be cheap here... but it seems silly to me to replace a $400 piece of plastic that could just be potentially patched and sealed.
Thoughts?
Reply
Old Dec 21, 2016 | 08:47 PM
  #2  
AlpWhiteM3's Avatar
Thread Starter
Newbie
 
Joined: Dec 2016
Posts: 7
Likes: 0
-2004 BMW M3 6MT, 2005 C230K 5AT, 2004 VW GTI VR6, 2005 Mazda 6i, 1986 Chevy S10
I should be upfront and honest and say that I'm referring to JB Weld, which many people have used on gas tanks and what not. Can't see why this wouldn't work...
Reply
Old Dec 21, 2016 | 08:54 PM
  #3  
RWDlifer's Avatar
Super Member
 
Joined: Oct 2013
Posts: 527
Likes: 20
From: Carolinas
2005 C230K SS
Many have tried...apparently the plastics used on the filler neck don't go well with adhesives, ends up leaking again...had to do this a while back, painful to shell out $$$ for a friggin leak the size of a gnat's ***...
Give it a shot..
Reply
Old Dec 21, 2016 | 09:51 PM
  #4  
AlpWhiteM3's Avatar
Thread Starter
Newbie
 
Joined: Dec 2016
Posts: 7
Likes: 0
-2004 BMW M3 6MT, 2005 C230K 5AT, 2004 VW GTI VR6, 2005 Mazda 6i, 1986 Chevy S10
Interesting... I wonder what they're prep work was, it's too important when you're trying the JB Weld life lol. Where'd you source your neck from? MB wants about $500 for it.
Uhhhh... nah.
Reply
Old Dec 21, 2016 | 09:55 PM
  #5  
AlpWhiteM3's Avatar
Thread Starter
Newbie
 
Joined: Dec 2016
Posts: 7
Likes: 0
-2004 BMW M3 6MT, 2005 C230K 5AT, 2004 VW GTI VR6, 2005 Mazda 6i, 1986 Chevy S10
And does the leak occur in a common area? If so, I'll reinforce the sh*t out of it and make sure that nothing can ever leak from it again 😂
Reply
Old Dec 22, 2016 | 09:51 AM
  #6  
RWDlifer's Avatar
Super Member
 
Joined: Oct 2013
Posts: 527
Likes: 20
From: Carolinas
2005 C230K SS
Got mine from a PA dealership through their amazon store...about $350..
Reply
Old Dec 23, 2016 | 01:07 PM
  #7  
AlpWhiteM3's Avatar
Thread Starter
Newbie
 
Joined: Dec 2016
Posts: 7
Likes: 0
-2004 BMW M3 6MT, 2005 C230K 5AT, 2004 VW GTI VR6, 2005 Mazda 6i, 1986 Chevy S10
Wow... $350? I'll buy that right meow. Got a link?
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Rate This Thread
Rate This Thread:
You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 09:42 AM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE