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XKR Throttle Coupling Needed

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Old 09-01-2017, 12:44 PM
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Default XKR Throttle Coupling Needed

Guys I can't seem to find a individual part number for the rubber coupling between the throttle and the plenum T (Part number AJ811188)
See photo.
Anyone know the part number or where to buy ? Worst case I can order an aftermarket silicon coupling.


 
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Old 09-01-2017, 01:36 PM
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Google shows the P/N as for the whole top hat assy.

https://parts.jaguarpalmbeach.com/p/.../AJ811188.html

Maybe a good local parts guy can get it or sort it by dimensions and see what comes up on the web?
 
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Old 09-01-2017, 02:05 PM
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You might try NJA3554AA . That is a duct seal that goes between the throttle body and air duct on earlier 4.0 XK8's & XJ8's. Item 6 on the diagram below. I don't know if the diameters are the same or not. (It looks quite reasonably priced - $55 list for what should be a $4.00 part.)


 
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Old 09-01-2017, 02:39 PM
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Make one yourself with silicone.
Make a mold from plaster of paris.
 
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Old 09-01-2017, 04:38 PM
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Originally Posted by Queen and Country View Post
Make one yourself with silicone.
Make a mold from plaster of paris.
That's a pretty clever idea. Like bathroom grade silicone or something more exotic?
 
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Old 09-01-2017, 05:07 PM
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Originally Posted by Ranchero50 View Post
That's a pretty clever idea. Like bathroom grade silicone or something more exotic?
You can use RTV Silicone- Just take time not to get any air bubbles.
There are tons of sites where you can get different types of silicone. Pourable and one that we used to import from Japan that was so thin we could soak fabric with it effectively making it ultrahigh temp.

You know that you can get gasket silicone in a easy to apply and economical form than those silly tubes from the auto store? Red RTV Sealant - Blue Silicone Sealant | Silicone Depot

We use a trick to strengthen silicone that no one knows, mix fine sand.
 
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Old 09-01-2017, 05:10 PM
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BTW- this is the best invention ever.
Allows you to be super precise with application.
And there is no substitute. Used mine for more than 4 years now.
Amazon Amazon
 
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Old 10-25-2017, 08:47 PM
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The gasket from the earlier cars is a perfect fit.

https://www.jaguarforums.com/forum/x...7/#post1669935
 
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Old 01-09-2019, 07:53 AM
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I got this of of Amazon to replace my broken rubber adapter. It works great. I had to trim it shorter with a utility knife but it works perfect for this piece. I ordered NJA3554AA at first and it did not work well so i measure both intake and throttle body and found this coupler to be close.

HPS HTSR-325-375-BLK Silicone High Temperature 4-ply Reinforced Reducer Coupler Hose, 40 PSI Maximum Pressure, 3" Length, 3-1/4" > 3-3/4" ID, Black


HPS HTSR-325-375-BLK
 
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Old 01-09-2019, 01:54 PM
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Please clarify Tracy. You mention it works perfect and then later indicate it's close. One of these is not like the other. What makes it perfect vs. close? Once trimmed it's perfect?
 
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Old 01-09-2019, 03:26 PM
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The smaller end was a few MM smaller than what I measured on the throttle body but the silicone stretches enough to make a good snug fit. When I used window cleaner it slipped on very easy. The large opening fit snug and with the clamps on both ends it should be leak free. Much better fit than that JAG part that was way too small for the T plenum. The silicon hose will probably outlive the JAG part too.
 
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Old 01-15-2019, 09:45 PM
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Just what I was looking for.
so part NJA3554AA
is that not a factory replacement?
The silicone unit just fits better ?

 
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Old 01-16-2019, 03:55 PM
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The Jag part is not a direct replacement it was a part from another car. the factory replacement is the $700-800 complete Y pipe AJ811188. The only thing I saw was they said NJA3554AA fit the throttle body side by measurement. I never found the post saying it worked and installed fine. I purchased it and could not make it fit on the Y pipe. The silicone adapter is the way to go in my opinion.
 
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Old 01-21-2019, 02:38 PM
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Like tracy keys said. I get the ones from siliconeintakes.com. They're about $12-15
and yes jaguar only sells that piece with the aluminum hat $$$$
 
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