MagnaFlow 93257 HM Grade Direct-Fit Catalytic Converter for 07-18 Nissan Altima

Vehicle Fitment

• 2007-2018 Nissan Altima (2.5L I4 QR25DE, FWD) - Base, S, SL, SV, SR - Sedan
• 2013-2018 Nissan Altima (2.5L I4 QR25DE, FWD) - S, SL, SV, SR - Coupe
• 2007-2011 Nissan Altima Hybrid (2.5L I4, FWD) - Sedan

Fitment Notes

• Does not fit Nissan Altima equipped with the 3.5L V6 engine - separate converter required
• Federal/EPA compliant only - not legal for sale or use in California, Colorado, New York, Maine, or other CARB-standard states
• Interchanges with OE part numbers 20010-3TA2A, 20010-3TA3A, 20010-JA000, 20010-JA00A, 20010-JA01A, 20010-JA01B, 20010-JA80A, 20010-ZX10A, and 20010-ZX20A

Features

• HM Grade direct-fit design - bolt-on installation, no cutting or welding required
• Mandrel-bent stainless steel tubing eliminates flow restrictions for optimal exhaust performance
• Spun-body construction with single laser fusion weld minimizes exhaust leaks
• Ceramic substrate with elevated precious metal loading for enhanced three-way emissions conversion
• 3D scanning technology used during R&D ensures factory-accurate fitment
• Pre- and post-catalyst O2 sensor ports maintain proper sensor function and prevent fault codes
• Includes gaskets to ensure a leak-free seal and eliminate reuse of corroded factory hardware
• Made in the USA at MagnaFlow's Oceanside, California facility

Specifications

• Grade: HM (Heavy Metal) Grade
• Converter Type: Three-Way Direct-Fit (Pre-Cat + Main Cat Combined)
• Body Material: Stainless Steel (Spun Body)
• Tube Material: Stainless Steel
• Inlet Diameter: 2.50 in. | Outlet Diameter: 2.50 in.
• Body Dimensions: 4.00 in. W x 9.00 in. L
• Overall Length: 49.75 in.
• Inlet Type: Bolt-On | Outlet Type: Bolt-On
• O2 Sensor Ports: Pre- and Post-Catalyst
• Substrate: Ceramic
• Air Tube: No
• CARB Certified: No (Federal/EPA Only)
• Warranty: 5-Year/50,000-Mile Limited Construction and Emissions

Included Components

• 1x Direct-Fit Catalytic Converter Assembly
• 1x Flange Gasket
• 1x Crush Ring Gasket

Product Description

The MagnaFlow 93257 is an HM Grade direct-fit catalytic converter engineered specifically for the 2007-2018 Nissan Altima and 2007-2011 Altima Hybrid equipped with the 2.5L I4 QR25DE engine in FWD Sedan and Coupe body styles. This assembly combines the pre-cat and main catalytic converter into a single direct-fit unit that replicates OE dimensions exactly, installing without cutting or welding using the included flange and crush ring gaskets for a leak-free seal.

Built from mandrel-bent stainless steel tubing with a spun-body design, pre- and post-catalyst O2 sensor ports, and a single laser fusion weld, the 93257 maintains proper sensor function and keeps the check engine light off across all supported Altima model years. Its ceramic substrate with elevated precious metal loading meets Federal EPA emissions standards reliably. Made in the USA and backed by a 5-year/50,000-mile warranty, this converter is a proven OE-quality replacement for the high-volume Nissan Altima 2.5L platform.