PPE IS350 Headers
Lexus Fanatic
iTrader: (10)
Joined: Nov 2004
Posts: 13,441
Likes: 1,082
From: Under an IS F since 2008
At the OEM Font mid pipe connections... NO..
The flanges after the primary CATs are the same on an IS250 RWD & IS350 RWD.
I haven't been able to confirm whether or not there are two different oem manifolds or part numbers between the two different engines...
Prelim data says they are the same, but someone with access to the OE parts catalogue can better verify than me..
Verified myself that the IS250 AWD manifolds are different for sure..!!
(at least on the drivers side)
Joe Z
The flanges after the primary CATs are the same on an IS250 RWD & IS350 RWD.
I haven't been able to confirm whether or not there are two different oem manifolds or part numbers between the two different engines...
Prelim data says they are the same, but someone with access to the OE parts catalogue can better verify than me..
Verified myself that the IS250 AWD manifolds are different for sure..!!
(at least on the drivers side)
Joe Z
Last edited by Joe Z; Oct 13, 2009 at 10:47 AM. Reason: typo
Pole Position
Joined: Jun 2007
Posts: 2,827
Likes: 2
From: DXB / AD
Manifolds part nos:
4gr-fse
L- 17150-3110
R- 17140-3110
2gr-fse
L-17150-31120
R-17140-31120
I actaully checked this out yesterday because i wanted to find out if my IS300 had the same manifold part numbers as the IS350 or 250
however i do remeber that there are diff model numbers for prodcution dates of (06- aug07), (aug07 - 08) and 09.
Ill verify later on today the diff remaining part numbers for the different model years
4gr-fse
L- 17150-3110
R- 17140-3110
2gr-fse
L-17150-31120
R-17140-31120
I actaully checked this out yesterday because i wanted to find out if my IS300 had the same manifold part numbers as the IS350 or 250
however i do remeber that there are diff model numbers for prodcution dates of (06- aug07), (aug07 - 08) and 09.
Ill verify later on today the diff remaining part numbers for the different model years
Lexus Fanatic
iTrader: (10)
Joined: Nov 2004
Posts: 13,441
Likes: 1,082
From: Under an IS F since 2008
Pole Position
Joined: Jun 2007
Posts: 2,827
Likes: 2
From: DXB / AD
I actually got the part numbers from the toyota/lexus database that dealers use. I had access to US, Japan, European, Asia markets.
Im pretty sure the info i provided is accurate. Ill get you the info in detail w a pic so u can see what system im talking about.
Pole Position
Joined: Jun 2007
Posts: 2,827
Likes: 2
From: DXB / AD
Ok here it is w production dates
2GR-FSE (4GR-FSE, GSE20, 21)
R: 17140-31120 (2005/ 08 - 2008/02)
L: 17150-31120 (2005/ 08 - 2008/ 08 -present)
R: 17140-31340 (2008/ 02 - 2008/ 08)
L: 17150-31120 (2008/ 08 - present)
4GR-FSE (GSE25)
R:17140-31110 (2005/08 - 2008/08)
L:17150-31120 (2005/ 08 - 2008/03)
R: 17140-31110 (2008/08- present )
L: 17150-31490 (2008/03- 2008/08 - present)
It seems like on the IS350 fits on IS250, and the GS's
But the 250 wont fit/isnt suitable for the 350
In 2005, the shared the same left side header. By 2008/08 , both had unique part numbers.
I foud this info by browsing the TOYOTA ELECTRONIC PART CATALOGUE SYSTEM V1.0 L40 R060
here is what it looks like, not sure if its the same system the lexus/toyota dealers use:
Pit Crew
Joined: May 2009
Posts: 172
Likes: 1
From: CA
wonder why the change. I mean I know that companies use different part number sometimes even though they are the same, like the gas tank on a 6th gen civic and a RSX. Same part, but differing part numbers with H and A represending Honda and Acura.
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Just to check, the primary cats do get removed but they can weld high-flow cats to your exhaust? So if your exhaust already had secondary cats, you'd have a total of four cats on your exhaust? 
They told me they want to build a new exhaust for the car as well. One that will bolt-up to the headers and hopefully produce as much power as possible with the two mods. I'm excited if they do this.
The secondary CATs though are useless. New cars don't pollute much at ALL anymore. Even if you remove them and keep the primary set on, you will still pass all emissions. They are just extra restriction and prevention of opening up the true potential of our engines, lol.
Hopefully they will make a new exhaust to match the headers. I can just feel this car being capable of 300RWHP with basic bolt-ons.. FEEL IT!!
Members, just an FYI that this thread is to be for information only - there cannot be any sales-related information discussed here until PPE decides to become or make the headers available through an approved Club Lexus vendor. Thanks for your understanding.
Javier
Javier
Yes.
They told me they want to build a new exhaust for the car as well. One that will bolt-up to the headers and hopefully produce as much power as possible with the two mods. I'm excited if they do this.
The secondary CATs though are useless. New cars don't pollute much at ALL anymore. Even if you remove them and keep the primary set on, you will still pass all emissions. They are just extra restriction and prevention of opening up the true potential of our engines, lol.
They told me they want to build a new exhaust for the car as well. One that will bolt-up to the headers and hopefully produce as much power as possible with the two mods. I'm excited if they do this.
The secondary CATs though are useless. New cars don't pollute much at ALL anymore. Even if you remove them and keep the primary set on, you will still pass all emissions. They are just extra restriction and prevention of opening up the true potential of our engines, lol.
and the secondary cats rob like 1-2 hp, not much of a restriction really.
