Nick Williams 103mm TB coupler
Thread Starter
Race Director
Joined: Apr 2000
Posts: 15,344
Likes: 4,009
From: Texas
Nick Williams 103mm TB coupler
On the new engine I have a Nick Williams 103mm throttle body that connects to my prior AFE Momentum Cold Air Intake. The shop squeezed/forced/finagled the AFE silicone coupler to fit the larger tb but let me tell you....it's not pretty.
Does anyone have a lead/link they can point me too so I can buy a new coupler/reducer? I *think* the outer diameter of the NW 103 tb is 108mm and the AFE coupler I'll guess is around 90-92mm
I'm concerned that if I take it off I'll damage it or never get it back on so I'd like to have the replacement in hand.
Does anyone have a lead/link they can point me too so I can buy a new coupler/reducer? I *think* the outer diameter of the NW 103 tb is 108mm and the AFE coupler I'll guess is around 90-92mm
I'm concerned that if I take it off I'll damage it or never get it back on so I'd like to have the replacement in hand.
Le Mans Master
Joined: Apr 2001
Posts: 5,475
Likes: 718
From: Black Forest CO
I'd just do a search for something like"4.25 x 3.5 coupler hose". That looks like it will get you what you need. You could also look for a hump hose if there is any alignment mismatch.
Thread Starter
Race Director
Joined: Apr 2000
Posts: 15,344
Likes: 4,009
From: Texas
Just to close this one out....
Shout out to AFE. I sent them a note and they were kind enough to respond back that their CAI uses a hose that's 3.875" ID and the NW 103mm throttle body has an OD of 4.25". The person helping me checked their stock but didn't have anything in that size.
With the dimensions, a little Google'ing turned up Intake Hoses.com The have a reducer that's 4.25" x 3.75" . The fact the other shop could stretch a 3.875" ID hose over the 4.25" throttle body makes me feel pretty comfortable I can stretch a 3.75" hose 0.12"
With it being 3" long I can trim as needed.
Should have it later this week
Shout out to AFE. I sent them a note and they were kind enough to respond back that their CAI uses a hose that's 3.875" ID and the NW 103mm throttle body has an OD of 4.25". The person helping me checked their stock but didn't have anything in that size.
With the dimensions, a little Google'ing turned up Intake Hoses.com The have a reducer that's 4.25" x 3.75" . The fact the other shop could stretch a 3.875" ID hose over the 4.25" throttle body makes me feel pretty comfortable I can stretch a 3.75" hose 0.12"
With it being 3" long I can trim as needed.Should have it later this week
Pro
Joined: Feb 2023
Posts: 579
Likes: 165
Thread Starter
Race Director
Joined: Apr 2000
Posts: 15,344
Likes: 4,009
From: Texas
