LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Coupler Replacement for Ram Air Box to MAF

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Old Oct 5, 2020 | 11:23 AM
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Default Coupler Replacement for Ram Air Box to MAF

This piece of rubber on my car is about shot. Anyone have any recommendations for a replacement or have done so in the past? Looks to only be about 1" - 1.5" wide. Thanks!


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Old Oct 6, 2020 | 05:50 AM
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Can you still get one new through GM or maybe a used one from Hawks Motorsports?
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Old Oct 6, 2020 | 07:14 AM
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Originally Posted by Germansheperd1
Can you still get one new through GM or maybe a used one from Hawks Motorsports?
If I had a part number I'd try to go that route, but finding a part number or exploded diagram to get the part number has been tricky so far. Figured others might have come up with their own solutions. I think I am going to try to cut down a silicone coupler to the size I need.
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Old Oct 6, 2020 | 10:45 AM
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GM #12529244 Outlet Duct. Good luck it has been discontinued for a while.

EDIT: here's one on ebay
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Old Oct 6, 2020 | 05:10 PM
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Just curious if a coupler from a non Ram Air car would work. Here is a picture for reference.


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Old Oct 8, 2020 | 05:35 AM
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Originally Posted by banshe5
Just curious if a coupler from a non Ram Air car would work. Here is a picture for reference.
Whether it works or not that was great thinking. Looks like it might.
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Old Oct 8, 2020 | 07:52 AM
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That may be actually be a common parts bin coupler - it looks like the one the stock intake on my '03 GMC Sonoma had. May be worth checking a scrap yard
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Old Oct 8, 2020 | 10:33 AM
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I thought I remember people picking up a Fernco coupler from HD or Lowes...
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Old Oct 8, 2020 | 12:29 PM
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Originally Posted by SS RRR
I thought I remember people picking up a Fernco coupler from HD or Lowes...
From the throttle body to the MAF, yes. Not from the MAF to the rest of the intake or in my case the Ram Air scoop.
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Old Oct 8, 2020 | 12:32 PM
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Originally Posted by stevo9389
GM #12529244 Outlet Duct. Good luck it has been discontinued for a while.

EDIT: here's one on ebay
Wow...good find! $115 is a bit steep for that piece of rubber. I think I will make my own.
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Old Oct 8, 2020 | 08:18 PM
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Originally Posted by afterburner82
From the throttle body to the MAF, yes. Not from the MAF to the rest of the intake or in my case the Ram Air scoop.
I dunno... try looking around on their website? Call them and give them some dimensions? Or go to a junkyard. I’m sure there are other chevy cars that used that same coupler if there aren’t any f-bodys.
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Old Oct 11, 2020 | 08:19 PM
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The fernco stuff ive tried has been too thick or stiff or both. Im in the same boat. Do parts from the LS1 cars fit?
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Old Oct 13, 2020 | 08:04 AM
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I was in the shop this weekend and found this from my '03 Sonoma, 4.3L:



What's the diameter on yours? I should have measured the one on my car but didn't have time

Last edited by rentedmule; Oct 13, 2020 at 08:06 AM. Reason: pic duplication
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Old Oct 13, 2020 | 10:54 PM
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I would replace both couplers with universal ones and shorten them with some wire cutters, you can get them on ebay. I also have a Firehawk and hate how the MAF to TB coupler shrouds the butterflies.
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