# MagnaFlow 23425 Direct Fit Standard Catalytic Converter (2.5" ID/2.5" OD) for 1975-1980 Buick Apollo and More ### Performance Overview The Direct Fit Catalytic Converter is designed with a ribbed body that can reduce expansion and distortion when the converters heat up. These ribs holds the ceramic catalyst in a proper position and it also forms a channel that shields the cushioning mat from direct exposure to exhaust gases. The ceramic coating is made for maximum surface area and flow, and the coating method is strictly controlled so that exact ### Key Features - Brand: MagnaFlow - Part number: 23425 - Product type: Direct Fit Standard Catalytic Converter (2.5" ID/2.5" OD) - Designed for compatible vehicle applications listed on this page ### Vehicle Fitment - 1975 Buick Apollo, Note: Base, Sr; 4.1L, 4.3L, 5.7L; 2.50"; 2.50" - 1975 Buick Skyhawk, Note: Base, S; 3.8L; 2.50"; 2.50" - 1976 Buick Skyhawk, Note: Base, S; 3.8L; 2.50"; 2.50" - 1977 Buick Skyhawk, Note: Base, S; 3.8L; 2.50"; 2.50" - 1978 Buick Skyhawk, Note: Base, S; 3.8L; 2.50"; 2.50" - 1979 Buick Skyhawk, Note: Base, Road Hawk, S; 3.8L; 2.50"; 2.50" - 1980 Buick Skyhawk, Note: Base, Designers' Accent Edition, Road Hawk, S; 3.8L; 2.50"; 2.50" - 1975 Buick Skylark, Note: Base, Sr; 3.8L, 4.3L, 5.7L; 2.50"; 2.50" ### FAQ **Will this fit my vehicle?** Please verify your year, make, model, position, and any fitment notes using the compatibility list above before purchase. **What part number is this?** The listed part number is 23425. **Is this product designed for direct replacement?** Yes. This product is intended to match compatible vehicle applications listed in the fitment section. **Should I confirm fitment before ordering?** Yes. Always compare your original part, position, and vehicle details with the fitment chart before ordering. ### Common Searches - Direct Fit Standard Catalytic Converter (2.5" ID/2.5" OD) for Buick Apollo - 23425 fitment - MagnaFlow Direct Fit Standard Catalytic Converter (2.5" ID/2.5" OD) - 1975 Buick Apollo Direct Fit Standard Catalytic Converter (2.5" ID/2.5" OD) ### Vehicle Fitment Table Year Make Model Position Fitment Precision Note 1975 Buick Apollo Base, Sr; 4.1L, 4.3L, 5.7L; 2.50"; 2.50" 1975 Buick Skyhawk Base, S; 3.8L; 2.50"; 2.50" 1976 Buick Skyhawk Base, S; 3.8L; 2.50"; 2.50" 1977 Buick Skyhawk Base, S; 3.8L; 2.50"; 2.50" 1978 Buick Skyhawk Base, S; 3.8L; 2.50"; 2.50" 1979 Buick Skyhawk Base, Road Hawk, S; 3.8L; 2.50"; 2.50" 1980 Buick Skyhawk Base, Designers' Accent Edition, Road Hawk, S; 3.8L; 2.50"; 2.50" 1975 Buick Skylark Base, Sr; 3.8L, 4.3L, 5.7L; 2.50"; 2.50" 1976 Buick Skylark Base, S, Sr; 3.8L, 4.3L, 5.7L; 2.50"; 2.50" 1977 Buick Skylark Base, S, Sr; 3.8L, 4.9L, 5.0L, 5.7L; 2.50"; 2.50" 1978 Buick Skylark Base, Custom, S, Sport; 3.8L, 5.0L, 5.7L; 2.50"; 2.50" 1979 Buick Skylark Base, Custom, S; 3.8L, 5.0L, 5.7L; 2.50"; 2.50" 1975 Chevrolet Camaro Base, Lt, Rs; 4.1L; 2.50"; 2.50" 1976 Chevrolet Camaro Base, Lt, Lt Rally Sport, Rally Sport; 4.1L, 5.0L; 2.50"; 2.50" 1977 Chevrolet Camaro Base, Lt, Lt Rally Sport, Rally Sport; 4.1L, 5.0L; 2.50"; 2.50" 1978 Chevrolet Camaro Base, Lt, Lt Rally Sport, Rally Sport; 4.1L, 5.0L; 2.50"; 2.50" 1979 Chevrolet Camaro Base, Berlinetta, Rally Sport, Z28; 4.1L, 5.0L; 2.50"; 2.50" 1975 Chevrolet Monza 2+2, S; 4.3L; 2.50"; 2.50" 1976 Chevrolet Monza 2+2, 2+2 Spyder, Base, Towne Coupe, Towne Coupe Cabriolet, Towne Coupe Sport, Towne Coupe Spyder; 2.3L, 4.3L, 5.0L; 2.50"; 2.50" 1977 Chevrolet Monza 2+2, 2+2 Spyder, Mirage, Towne Coupe, Towne Coupe Cabriolet, Towne Coupe Sport; 5.0L; 2.50"; 2.50" 1978 Chevrolet Monza 2+2, 2+2 Sport, 2+2 Spyder, Base, S, Sport; 3.2L, 3.8L, 5.0L; 2.50"; 2.50" 1979 Chevrolet Monza 2+2, 2+2 Sport, 2+2 Spyder, Base, S; 3.2L, 3.8L, 5.0L; 2.50"; 2.50" 1980 Chevrolet Monza 2+2, 2+2 Sport, 2+2 Spyder, Base, Spyder; 3.8L; 2.50"; 2.50" 1979 International Scout Ii Base, Ss2, Terra, Traveler; 3.2L, 5.0L, 5.6L; 2.50"; 2.50" 1980 International Scout Ii Base, Terra, Traveler; 3.2L, 5.0L, 5.6L; 2.50"; 2.50" 1975 Oldsmobile Omega Base, Salon; 4.1L, 4.3L, 5.7L; 2.50"; 2.50" 1976 Oldsmobile Omega Base, Brougham, F85, Sx; 4.1L, 4.3L, 5.7L; 2.50"; 2.50" 1977 Oldsmobile Omega Base, Brougham, Deluxe, F85, Sx; 3.8L, 4.3L, 5.0L, 5.7L; 2.50"; 2.50" 1978 Oldsmobile Omega Base, Brougham, Brougham Ls, Sx; 3.8L, 5.0L, 5.7L; 2.50"; 2.50" 1979 Oldsmobile Omega Base, Brougham, Brougham Ls; 3.8L, 5.0L, 5.7L; 2.50"; 2.50" 1975 Oldsmobile Starfire Base, S; 3.8L; 2.50"; 2.50" 1976 Oldsmobile Starfire Base, Gt, Sx; 3.8L; 2.50"; 2.50" 1977 Oldsmobile Starfire Base, Firenza, Gt, Sx; 3.8L, 5.0L; 2.50"; 2.50" 1978 Oldsmobile Starfire Base, Firenza, Gt, Sx; 3.8L, 5.0L; 2.50"; 2.50" 1979 Oldsmobile Starfire Base, Firenza, Gt, Sx; 3.8L, 5.0L; 2.50"; 2.50" 1980 Oldsmobile Starfire Base, Firenza, Gt, Sx; 3.8L; 2.50"; 2.50" 1975 Pontiac Astre Base, Custom, Gt, Gt Safari, S, S Safari, Sj, Sj Safari, Safari; 2.3L; 2.50"; 2.50" 1976 Pontiac Astre Base, Custom; 2.3L; 2.50"; 2.50" 1977 Pontiac Astre Base, Safari; 2.5L; 2.50"; 2.50" 1975 Pontiac Firebird Base, Esprit; 4.1L; 2.50"; 2.50" 1976 Pontiac Firebird Base, Esprit; 4.1L; 2.50"; 2.50" 1977 Pontiac Firebird Base, Esprit, Formula; 3.8L, 4.9L, 5.0L; 2.50"; 2.50" 1978 Pontiac Firebird Base, Esprit, Formula; 3.8L, 4.9L, 5.0L; 2.50"; 2.50" 1979 Pontiac Firebird Base, Esprit, Formula, Trans Am; 3.8L, 4.9L, 5.0L; 2.50"; 2.50" 1977 Pontiac Phoenix Base; 3.8L; 2.50"; 2.50" 1978 Pontiac Phoenix Base, Lj, Sj; 3.8L; 2.50"; 2.50" 1979 Pontiac Phoenix Base, Lj, Sj; 3.8L; 2.50"; 2.50" 1976 Pontiac Sunbird Base, Sj; 2.3L, 3.8L; 2.50"; 2.50" 1977 Pontiac Sunbird Base; 2.5L, 3.8L; 2.50"; 2.50" 1978 Pontiac Sunbird Base, Safari; 3.8L, 5.0L; 2.50"; 2.50" 1979 Pontiac Sunbird Base, Safari; 3.8L, 5.0L; 2.50"; 2.50" 1980 Pontiac Sunbird Base; 3.8L; 2.50"; 2.50" 1975 Pontiac Ventura Base, Custom, S, Sj; 4.1L, 4.3L; 2.50"; 2.50" 1976 Pontiac Ventura Base, Sj; 4.1L, 4.3L; 2.50"; 2.50" 1977 Pontiac Ventura Base, Sj; 3.8L; 2.50"; 2.50" ## Details - **Price:** 323.35 CAD - **Vendor:** MagnaFlow - **Type:** Direct Fit Standard Catalytic Converter (2.5" ID/2.5" OD) - **Tags:** 1975 Buick Apollo, 1975 Buick Skyhawk, 1975 Buick Skylark, 1975 Chevrolet Camaro, 1975 Chevrolet Monza, 1975 Oldsmobile Omega, 1975 Oldsmobile Starfire, 1976 Buick Skyhawk, 1976 Buick Skylark, 1976 Chevrolet Camaro, 1976 Chevrolet Monza, 1976 Oldsmobile Omega, 1976 Oldsmobile Starfire, 1977 Buick Skyhawk, 1977 Buick Skylark, 1977 Chevrolet Camaro, 1977 Chevrolet Monza, 1977 Oldsmobile Omega, 1977 Oldsmobile Starfire, 1978 Buick Skyhawk, 1978 Buick Skylark, 1978 Chevrolet Camaro, 1978 Chevrolet Monza, 1978 Oldsmobile Omega, 1978 Oldsmobile Starfire, 1979 Buick Skyhawk, 1979 Buick Skylark, 1979 Chevrolet Camaro, 1979 Chevrolet Monza, 1979 International Scout Ii, 1979 Oldsmobile Omega, 1979 Oldsmobile Starfire, 1980 Buick Skyhawk, 1980 Chevrolet Monza, 1980 International Scout Ii, 23425, Auto Parts, Automotive, Catalytic Converter, Direct Fit Standard Catalytic Converter (2.5" ID/2.5" OD), Direct Replacement, Exhaust Performance, Exhaust System, MagnaFlow, Magnaflow-23425, Muffler, Performance Exhaust, Performance Parts, Vehicle Fitment ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 323.35 CAD | In stock | ## Images - MagnaFlow 23425 Direct Fit Standard Catalytic Converter (2.5" ID/2.5" OD) --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/magnaflow-buick-apollo-catalytic-converter-23425) > Updated: 2026-07-16