Walker 15856 Catalytic Converter

Walker EPA Direct-Fit Catalytic Converter

Walker EPA 15856 is a direct-fit catalytic converter built for specific 1996-1999 applications and engineered to meet EPA standards for OBDII vehicles. It uses a stainless steel body with a ceramic substrate and a welded 3-bolt flange inlet and outlet for a direct replacement on select Chevrolet S10, GMC Sonoma, and Isuzu Hombre models.

Key Features

• Direct-fit design for specific vehicle applications
• EPA-compliant construction for federal-emissions vehicles
• Stainless steel body with ceramic substrate
• Large oval converter body shape
• 3-bolt welded flange inlet and outlet
• Post-catalyst oxygen sensor location
• Fits 1996-1999 Chevrolet S10, GMC Sonoma, and Isuzu Hombre applications listed below

Product Details

Walker EPA 15856 is part of Walker Ultra Direct-Fit Catalytic Converters, a product line focused on direct replacement fitment for import and domestic OBDII vehicles. This converter is designed for federal-emissions applications and is not CARB certified. It cross-references Eastern Catalytic 50310 for the same application. The part number 15856 is commonly searched for 1998-1999 Chevrolet S10 catalytic converter replacement and 1998-1999 GMC Sonoma exhaust repair, as well as 1996-1999 Isuzu Hombre emissions service.

Fitment

• Fits 1998-1999 Chevrolet S10, with Federal Emission System; without High Rider Option; not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Exhaust gasket is recommended. Additional part(s) needed to complete installation: 31589 and 31571.
• Fits 1998-1999 GMC Sonoma, with Federal Emission System; without High Rider Option; not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Exhaust gasket is recommended. Additional part(s) needed to complete installation: 31589 and 31571.
• Fits 1998-1999 Isuzu Hombre, Fed. & Calif. Emission Models; not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Exhaust gasket is recommended. Additional part(s) needed to complete installation: 31589 and 31571.
• Fits 1996-1997 Chevrolet S10, without High Rider Option; Fed. & Calif. Emission Models; not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Exhaust gasket is recommended. Additional part(s) needed to complete installation: 31589 and 31571.
• Fits 1996-1997 GMC Sonoma, without High Rider Option; Fed. & Calif. Emission Models; not legal for sale or use in California and other CARB-compliant states. Legal in New York and Maine on EPA Federal Emission Equipped Vehicles only. Exhaust gasket is recommended. Additional part(s) needed to complete installation: 31589 and 31571.

What It Helps Address

• Failed emissions testing caused by a worn or inefficient converter
• Check engine light concerns related to catalyst efficiency
• Restricted exhaust flow from a deteriorated converter core
• Exhaust leaks at the converter connection points
• Direct replacement needs for select Chevrolet S10, GMC Sonoma, and Isuzu Hombre models

Installation Notes

Verify emissions compliance before purchase, since this converter is EPA federal-emissions only and not legal for sale or use in California and other CARB-compliant states. Confirm the vehicle’s year, engine/emissions configuration, and High Rider option status before installation. An exhaust gasket is recommended, and the listed additional parts should be on hand to complete the repair. The welded 3-bolt flange design supports direct-fit installation on the specified applications.

Quality Assurance

Walker EPA 15856 is built to comply with EPA standards and is intended for direct replacement on the listed OBDII applications. The stainless steel construction and direct-fit configuration support consistent installation on compatible federal-emissions vehicles.