AP Exhaust 840001 Catalytic Converter - Left or Right

CARB-Compliant Universal Catalytic Converter

AP Exhaust 840001 is a CARB compliant universal catalytic converter built for California emissions applications. It uses a 2 1/4" ID neck on both inlet sides and a 14-inch overall length for OE-style fitment in approved applications.

Compatible With select Acura, Honda, Chrysler, Dodge, Jeep, Saab, Isuzu, and INFINITI applications listed below, this converter is engineered for direct emissions-system replacement where California compliance is required.

Key Features

• Executive Order D-280-104 for California emissions compliance
• CARB compliant universal design
• 2 1/4" ID neck inlet type A and inlet type B
• 14-inch overall length
• Built with AP Exhaust ARISTO substrate chemistry for efficient catalyst loading
• Manufactured to OE dimensions and fitment standards
• Part number 840001 for application lookup and ordering

Product Details

AP Exhaust uses proprietary substrate chemistry to achieve efficient catalyst loading while keeping production costs controlled. The converter is produced with automated workstations, spinner welding equipment, and high-speed manufacturing lines to maintain consistent dimensions and fitment. That combination supports accurate installation in California-approved applications such as 1996-2005 Acura NSX, 1997-2005 Honda S2000, and 1998-1998 Jeep Cherokee listings, along with additional Honda, Acura, Chrysler, Dodge, Saab, Isuzu, and INFINITI coverage.

This part number 840001 is a practical choice for emissions repairs where a CARB compliant universal catalytic converter is required and the vehicle listing calls for a 2 in/2 in, 14 in OAL, small oval configuration with O2 fitting.

What It Helps Fix

• Failed emissions test results tied to a worn catalytic converter
• Check engine light concerns related to catalyst efficiency codes
• Restricted exhaust flow from a deteriorated converter substrate
• California compliance issues on approved applications
• Replacement needs for aging factory catalytic converters

Installation Notes and Tips

• Verify the exact year, make, model, and emissions label before installation.
• Confirm the 2 1/4" ID neck inlet dimensions and 14-inch overall length against the existing exhaust section.
• Check O2 sensor fitting location and exhaust routing before welding or clamping.
• Use the vehicle-specific EO number D-280-104 when confirming California legality.
• Professional installation is recommended for proper alignment and emissions-system sealing.

Quality Assurance

AP Exhaust builds this converter with OE-dimension manufacturing controls and automated production processes to support consistent fitment and emissions performance. The ARISTO substrate chemistry and controlled manufacturing methods are used to deliver efficient converter construction for approved California applications.