G35 Coupe V35 2003 - 07 Discussion about the 1st Generation V35 G35 Coupe

0420-0430 codes--05 g35 250k miles

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Old Feb 1, 2026 | 10:58 AM
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0420-0430 codes--05 g35 250k miles

Have 2005 g35 coupe with 250k miles, still hanging on but my CATS ARE DEAD AND NEED TO REPLACE, live in CA and the price is thru the ROOF, i get it we get RAPED for everything in CA
looking at 2700 for both installed.

ANY HELP OUT THERE? SUGGEST? i know should have gotten rid of the car but I LIKE MY G DOES THAT SOUND RIGHT??

thanks,
 
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Old Feb 6, 2026 | 10:29 AM
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You can try and source some used ones ~500-$1000. Unfortunately not too many other options.
 
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Old Feb 6, 2026 | 06:02 PM
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Originally Posted by Urbanengineer
You can try and source some used ones ~500-$1000. Unfortunately not too many other options.
+1 look for someone getting test pipes/ HFC and see if you can buy their used ones
 
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Old Feb 7, 2026 | 08:40 AM
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Originally Posted by seymore4
+1 look for someone getting test pipes/ HFC and see if you can buy their used ones
would he pass Cali emissions with hfcs? I’m behind the times on their testing.
 
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Old Feb 7, 2026 | 09:44 AM
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Originally Posted by Urbanengineer
would he pass Cali emissions with hfcs? I’m behind the times on their testing.
I meant for him to buy their used OEM cats
 
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