MagnaFlow CARB Rear Bank Primary Manifold Catalytic Converter - BMW 525i / 530i 2001-2003
MagnaFlow CARB Rear Bank Primary Manifold Catalytic Converter - BMW 525i / 530i 2001-2003, features and benefits
MagnaFlow CARB Rear Bank Primary Manifold Catalytic Converter - BMW 525i / 530i 2001-2003
MagnaFlow CARB Rear Bank Primary Manifold Catalytic Converter - BMW 525i / 530i 2001-2003, features and benefits

MagnaFlow CARB Rear Bank Primary Manifold Catalytic Converter - BMW 525i / 530i 2001-2003

Magnaflow SKU: MAG452431
Price
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MagnaFlow classifies this as a manifold converter, meaning it bolts to the cylinder block and serves as the start of the exhaust system rather than sitting downstream. The M54 inline six carries two of them and this is the rear bank unit, so the front bank takes a different part number. The spun body replicates the OE design and installs with no cutting or welding, using a single laser fusion weld to cut down leak paths, 16 gauge 409 stainless tubing and 308 stainless MIG welds. It is CARB compliant under Executive Order D-193-180 but is not New York certified. Two flange gaskets, four flat washers, two bolts and two nuts are included.

Specifications

Type Direct-fit manifold catalytic converter (MagnaFlow California Grade)
Position Rear cylinder bank, primary (close-coupled manifold converter)
Emissions Compliance California CARB compliant, Executive Order D-193-180. Not New York certified
Body Type Spun, one-piece
Finish Uncoated stainless steel
Material 16 gauge 409 stainless steel tubing, stainless steel body, 308 stainless steel MIG welds
Substrate Ceramic
Overall Length 14 in
Converter Body Length 9 in
Heat Shield Not attached
Oxygen Sensor Ports 1
Includes 2 flange gaskets, 4 flat washers, 2 bolts, 2 nuts, outlet mounting hardware
OEM Replacement 18 40 7 507 348, 18 40 7 508 806, 18 40 7 514 499
Pairs With 452430 (front cylinder bank manifold converter)
Quantity 1
Part Number 452431

This part fits:

Year Make Model Submodel
2001-2003 BMW 525i Base
2001-2003 BMW 530i Base

Shipping

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Returns

  • 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
  • Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
  • Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
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  • Product images may be representative. The SKU and specifications in the listing are what ships.
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