XK8 / XKR ( X100 ) 1996 - 2006

Plastic fitting on brake booster line, throttle body gasket

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Old Aug 3, 2025 | 11:15 AM
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Default Plastic fitting on brake booster line, throttle body gasket

Is this plastic fitting available separately or do you have to buy the entire new brake booster vacuum line?

Also, where is the best place to source a new throttle body gasket? I read the stock thin metal ones leak...is there a better aftermarket one?
Car is a 2006 XK8 convertible with 4.2 NA engine.


 
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Old Aug 7, 2025 | 09:23 AM
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I have to believe these plastic fittings are available separately since they're pretty widely used on many modern cars. Perhaps by Dorman?
 
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Old Aug 7, 2025 | 07:35 PM
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Those are Norma connectors. They're kind of integrated into the hose. I too looked at replacing them at some time but could not find a replacement.
 
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Old Aug 7, 2025 | 11:01 PM
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I haven't seen any other TB gaskets except the metal ones. Metal ones don't seem to leak if you don't reuse them too many times. I *think* you're only supposed to use them once, but I've reused mine like 3 times.
 
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Old Aug 8, 2025 | 01:42 AM
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just hold it in with dum dum
 
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Old Aug 8, 2025 | 09:38 AM
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Originally Posted by giandanielxk8
Those are Norma connectors. They're kind of integrated into the hose. I too looked at replacing them at some time but could not find a replacement.
Thank you for letting me know the proper name for these. Agree they are pretty much molded / heat sealed onto the line. They also have O-rings in them and a smoke test showed this was one of many leaks on our car, which is why I pulled it off to install new ones. I know it would be a bit of a PITA but would think I would able to do it carefully with a heat gun if I can find just the connector. Then again, it's a pretty short line and plastic, with another of those fittings at the other end, so maybe better to just replace the entire line.

One of the biggest vacuum leaks was from the base of the oil fill pipe/extension. Not looking forward to removing the valve cover to get to the locking tab underneath but suppose it's just a matter of time before the valve cover gaskets start leaking anyway.
 
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Old Aug 8, 2025 | 09:39 AM
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Originally Posted by Y2KJag
I haven't seen any other TB gaskets except the metal ones. Metal ones don't seem to leak if you don't reuse them too many times. I *think* you're only supposed to use them once, but I've reused mine like 3 times.
Good to know. I'll try re-using it since I have to smoke test again when I fix the other issues anyway and it's quick to pop back off if I do need a new gasket.
 
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