The MagnaFlow 52373 is an OEM-grade, Federal/EPA-compliant direct-fit underbody catalytic converter for the driver side (Bank 2) of the 4.5L V8 Cayenne. It uses 16-gauge 409 stainless steel mandrel-bent tubing with a spun body that replicates the factory geometry, and a single laser fusion weld reduces leak points while the compact, low-mass design improves thermal efficiency. OE-style 410 stainless barbed hangers and 308 stainless MIG welds add durability, and the hardware needed for installation is included to avoid reusing corroded factory parts, for a bolt-in fit with no cutting or welding. It is emissions-legal on Federal/EPA vehicles in 49 states and is not legal for sale or use in California.
Specifications
| Type | Direct-Fit Catalytic Converter (OEM Grade) |
| Position | Driver side (Bank 2), underbody |
| Material | 16-gauge 409 stainless steel |
| Series | OEM Grade |
| Finish | Stainless |
| Body Type | Spun |
| Inlet Type | Flange |
| Clamps Included | No |
| Hangers Included | Yes |
| Legality | Not legal for sale or installation in California, Colorado or New York. |
| Quantity | 1 |
| Part Number | 52373 |
| OEM Replacement | 955 113 023 AX, 955 113 023 00 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2006 | Porsche | Cayenne | Base |
| 2004-2006 | Porsche | Cayenne | S |
Which vehicles does this fit?
- It fits the Porsche Cayenne 2004-2006. The full year, make, model and submodel list is in the fitment table on this page. This part is for the driver side (bank 2), underbody position.
Is it legal in my state?
- Not legal for sale or installation in California, Colorado or New York.
What is it made of?
- 16-gauge 409 stainless steel.
Shipping
- Orders placed before 3 PM EST typically ship the same business day. Larger items ship within 1 to 3 business days.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Special order items follow a lead time we confirm with you individually before the order is committed.
- Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
- Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
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.
- Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
- Product images may be representative. The SKU and specifications in the listing are what ships.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Returns & Refunds · Warranty






