MagnaFlow OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter, 51237
In stock
$294.99
Listed as compatible with this vehicle by the retailer feed.
Check priceSearch parts for your 2001 Nissan Altima
9 products matching “Catalytic Converter” listed as compatible with this vehicle.
Walker Standard EPA Direct Fit Catalytic Converter Overall Length 12.500 IN, 15538
In stock
$316.99
Listed as compatible with this vehicle by the retailer feed.
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MagnaFlow California Grade CARB Compliant Universal Catalytic Converter, 457105
In stock
$363.99
Listed as compatible with this vehicle by the retailer feed.
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MagnaFlow California Grade CARB Compliant Universal Catalytic Converter, 444005
In stock
$404.99
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, 16133
In stock
$629.99
Listed as compatible with this vehicle by the retailer feed.
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Walker CalCat CARB Direct Fit Catalytic Converter 2.12" Outlet (OD), 82574
In stock
$704.99
Listed as compatible with this vehicle by the retailer feed.
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MagnaFlow OEM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter, 49360
In stock
$808.99
Listed as compatible with this vehicle by the retailer feed.
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MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter, 441705
In stock
$865.99
Listed as compatible with this vehicle by the retailer feed.
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MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter, 441062
In stock
$981.99
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.