This is the downstream secondary converter for the 3.5L V6, built on a clam-shell body that replicates the OE part so it bolts into the factory location with no cutting or welding. The tubing is 16 gauge 409 stainless mandrel bent to hold the OE flow geometry, joined by a single laser fusion weld that leaves fewer seams to leak, with 308 stainless MIG welds and OE-sized barbed 410 stainless hangers to keep noise and vibration down. It is CARB compliant under Executive Order D-193-171, which makes it legal to install in California and the CARB restricted states on the listed vehicles, and two flange gaskets come in the box.
Specifications
| Type | Direct-fit catalytic converter (MagnaFlow California Grade) |
| Position | Rear, secondary (downstream) |
| Emissions Compliance | California CARB compliant, Executive Order D-193-171. New York certified |
| Body Type | Clam-shell |
| Material | 16 gauge 409 stainless steel tubing, stainless steel body, 308 stainless steel MIG welds |
| Substrate | Ceramic |
| Overall Length | 12.125 in |
| Heat Shield | Attached, aluminized steel |
| Oxygen Sensor Ports | 0 |
| Hangers | OE-sized barbed, 410 stainless steel |
| Includes | 2 flange gaskets |
| OEM Replacement | 20800-5Y525 |
| Quantity | 1 |
| Part Number | 441041 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2004 | INFINITI | I35 | Base |
| 2002-2003 | Nissan | Maxima | GLE |
| 2002-2003 | Nissan | Maxima | GXE |
| 2002-2003 | Nissan | Maxima | SE |
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
