Dorman Direct Fit Exhaust Manifold: with Heat Shield, 674-934
In stock
$404.99
Listed as compatible with this vehicle by the retailer feed.
Check price2003 Nissan Maxima Exhaust Systems
36 products listed as compatible with this vehicle by the retailer feed.
Back to 2003 Nissan Maxima parts
MagnaFlow OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter, 51108
In stock
$409.99
Listed as compatible with this vehicle by the retailer feed.
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MagnaFlow OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter, 49365
In stock
$447.99
Listed as compatible with this vehicle by the retailer feed.
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Dorman Direct Fit Catalytic Converter: No Fabrication Needed, EPA Compliant, 679-511
In stock
$599.99
Listed as compatible with this vehicle by the retailer feed.
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Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 12.375 IN, 16210
In stock
$612.99
Listed as compatible with this vehicle by the retailer feed.
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Walker Exhaust Y Pipe, 54521
In stock
$631.99
Listed as compatible with this vehicle by the retailer feed.
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Dorman Engine Crossover Pipe, 679-064
In stock
$841.99
Listed as compatible with this vehicle by the retailer feed.
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Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 8.750 IN, 16209
In stock
$845.99
Listed as compatible with this vehicle by the retailer feed.
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Walker CalCat CARB Direct Fit Catalytic Converter Overall Length 9.000 IN, 82584
In stock
$948.99
Listed as compatible with this vehicle by the retailer feed.
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Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 10.500 IN, 16362
In stock
$1,049.00
Listed as compatible with this vehicle by the retailer feed.
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MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter, 444311
In stock
$1,097.00
Listed as compatible with this vehicle by the retailer feed.
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MagnaFlow OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter, 49366
In stock
$1,354.00
Listed as compatible with this vehicle by the retailer feed.
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This site contains affiliate links. We may earn a commission if you buy through them. We do not sell these products or guarantee merchant inventory. Compatibility is listed by the retailer feed for this vehicle; it is not an OEM confirmation. Catalog snapshot: Aug 15, 2026.