Compatibility: please check the compatibility before you purchase. 1998-1999 Chevrolet Astro 4.3L 1998-1999 GMC Safari 4.3L Feature: Corrosion-resistant stainless steel construction In easier installation and resistance to high temperatures, vibration damage and wire corrosion, which protects signal accuracy and longevity. Industry's fastest light-off times to reduce cold-start emissions and improved fuel economy over aging sensor Unique sensor coatings protect elements from premature failure and are validated for lifetime operation with E85 and other alcohol-based fuels. .
