Stock Headers? - Lexus IS Forum
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post #1 of 9 (permalink) Old 09-09-2018, 11:16 PM Thread Starter
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Stock Headers?

Hey all,

Quick question: Did the IS ever come with stock headers? It looks like my car has headers but I can't see a brand anywhere. I wasn't aware it had headers when I bought it, but they don't look like the stock headers i've seen in photos.
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post #2 of 9 (permalink) Old 09-10-2018, 02:35 PM
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You'll have to show a picture of what you're talking about and dealing with, if we know it's stock or not
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post #3 of 9 (permalink) Old 09-10-2018, 05:15 PM
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Quote:
Originally Posted by GreaseKnuckle View Post
Did the IS ever come with stock headers?
yes. every single is300. when it left the factory.

echoing tobias, post pictures or google stock is300 engine bay.

Lucy; 04 manual sportdesign
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post #4 of 9 (permalink) Old 09-11-2018, 06:55 PM Thread Starter
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Sorry for the miscommunication... I just tend to refer as any non-stock as headers and stock as just exhaust. Here is a photo of what my car has.
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post #5 of 9 (permalink) Old 09-11-2018, 09:40 PM
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Are there a pair of cats just below what is pictured? Actual headers wouldn't have cats in them. Don't take this too literally- I mean catalytic converters.
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post #6 of 9 (permalink) Old 09-11-2018, 10:13 PM Thread Starter
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Yes, I am wondering if these are aftermarket or original. Do the stock ones have a seam weld on the sides instead of being mandrel bent?
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post #7 of 9 (permalink) Old 09-12-2018, 12:15 AM
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looks more like JDM Aristo 2JZGE-vvti exhaust manifold, where first runners (Pre-Cats) are mandrel bent tubes, or an aftermarket USDM part like Flowmaster!
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post #8 of 9 (permalink) Old 09-12-2018, 07:43 AM
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Yeah, they look like replacement exhaust manifolds. The lack of a heat shield suggests a relatively inexpensive replacement. My 250K mile car came with a set like that.
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post #9 of 9 (permalink) Old 09-12-2018, 02:10 PM
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Yeah those aren't the ones that came on the car, but they are close enough to stock. So to ask "Did the IS ever come with stock headers", the answer is yes. If the question is "Did the IS ever come with non-stock exhaust", then answer is obviously no
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post #10 of 9 (permalink) Old 09-16-2018, 04:00 PM Thread Starter
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Yes, apologies. My question should have been "are these stock headers?" with an accompanying picture :-)

I'll find out the brand when I replace them.. I am ordering the Magnaflow's asap since my cat has gone bad.
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