| Manufacture | Number | 
| ACDelco | 213-1253 | 
| Airtex | 5S3300 | 
| Bosch Automotive | 15709 | 
| BWD | OS138 | 
| BWD | OS1956 | 
| BWD | OS1959 | 
| CarQuest | 75-1757 | 
| Delphi | ES10143 | 
| Delphi | ES10367 | 
| NGK | 24022 | 
| Denso | 234-3042 | 
| Mazda | KL55188619U | 
| Mazda | KL56188619U | 
| Standard Motor Products | SG134 | 
| Standard Motor Products | SG151 | 
| Standard Motor Products | SG305 | 
| Ford | F42Z9F472A | 
| Ford | F42Z9F472C | 
| Wells | SU279 | 
| Year | Make | Model | Engine | Notes | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | Calif. Emissions Std.; Upstream Front; 1; 4; NTK is the OE Mfg; | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | Calif. Emissions Std.; Upstream Rear; 3; 4; NTK is the OE Mfg; | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | Calif. Emissions Std.; Upstream Rear; 3; 4; NTK is the OE Mfg; | 
| 1995 | Ford | Probe | 2.5L 2450CC 152Cu. In. V6 GAS DOHC Naturally Aspirated | Calif. Emissions Std.; Upstream Front; 1; 4; NTK is the OE Mfg; | 
| 1994 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | Calif. Emissions Std.; Upstream Rear; 3; 4; NTK is the OE Mfg; | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | Calif. Emissions Std.; Upstream Front; 1; 4; NTK is the OE Mfg; | 
| 1994 | Ford | Probe | 2.5L 2450CC 152Cu. In. V6 GAS DOHC Naturally Aspirated | Calif. Emissions Std.; Upstream Rear; 3; 4; NTK is the OE Mfg; | 
| 1995 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | Calif. Emissions Std.; Upstream Rear; 3; 4; NTK is the OE Mfg; | 
| 1994 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | with California Emissions | 
| 1994 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | with California Emissions | 
| 1995 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | with California Emissions | 
| 1995 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | with California Emissions | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | with California Emissions | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | with California Emissions | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | with California Emissions | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | with California Emissions | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | with California Emissions | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | with California Emissions | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | with California Emissions | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | with California Emissions | 
| 1994 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | Calif. | 
| 1995 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | Calif. | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | Calif. | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | Calif. | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | Calif. | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | Calif. | 
| 1994 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | B1S1 Calif. Emissions OE MFR: NTK | 
| 1994 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | B2S1 Calif. Emissions OE MFR: NTK | 
| 1995 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | B1S1 Calif. Emissions OE MFR: NTK | 
| 1995 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | B2S1 Calif. Emissions OE MFR: NTK | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | B1S1 Calif. Emissions OE MFR: NTK | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | B1S1 Calif. Emissions OE MFR: NTK | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | B2S1 Calif. Emissions OE MFR: NTK | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | B2S1 Calif. Emissions OE MFR: NTK | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | B1S1 Calif. Emissions OE MFR: NTK | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | B1S1 Calif. Emissions OE MFR: NTK | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | B2S1 Calif. Emissions OE MFR: NTK | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | B2S1 Calif. Emissions OE MFR: NTK | 
| 1994 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | California | 
| 1994 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | California | 
| 1995 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | California | 
| 1995 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | California | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | California | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | California | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | California | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | California | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | California | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | California | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | California | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | California | 
| Year | Make | Model | Engine | Trim | Notes | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LX Sedan 4-Door | Calif. Emissions Std.; Upstream Front; 1; 4; NTK is the OE Mfg; | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LX Sedan 4-Door | Calif. Emissions Std.; Upstream Rear; 3; 4; NTK is the OE Mfg; | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | ES Sedan 4-Door | Calif. Emissions Std.; Upstream Rear; 3; 4; NTK is the OE Mfg; | 
| 1995 | Ford | Probe | 2.5L 2450CC 152Cu. In. V6 GAS DOHC Naturally Aspirated | GT Hatchback 2-Door | Calif. Emissions Std.; Upstream Front; 1; 4; NTK is the OE Mfg; | 
| 1994 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LS Coupe 2-Door | Calif. Emissions Std.; Upstream Rear; 3; 4; NTK is the OE Mfg; | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | ES Sedan 4-Door | Calif. Emissions Std.; Upstream Front; 1; 4; NTK is the OE Mfg; | 
| 1994 | Ford | Probe | 2.5L 2450CC 152Cu. In. V6 GAS DOHC Naturally Aspirated | GT Hatchback 2-Door | Calif. Emissions Std.; Upstream Rear; 3; 4; NTK is the OE Mfg; | 
| 1995 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LS Coupe 2-Door | Calif. Emissions Std.; Upstream Rear; 3; 4; NTK is the OE Mfg; | 
| 1994 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LS Coupe 2-Door | with California Emissions | 
| 1994 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LS Coupe 2-Door | with California Emissions | 
| 1995 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LS Coupe 2-Door | with California Emissions | 
| 1995 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LS Coupe 2-Door | with California Emissions | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LX Sedan 4-Door | with California Emissions | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | ES Sedan 4-Door | with California Emissions | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LX Sedan 4-Door | with California Emissions | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | ES Sedan 4-Door | with California Emissions | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LX Sedan 4-Door | with California Emissions | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | ES Sedan 4-Door | with California Emissions | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LX Sedan 4-Door | with California Emissions | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | ES Sedan 4-Door | with California Emissions | 
| 1994 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LS Coupe 2-Door | Calif. | 
| 1995 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LS Coupe 2-Door | Calif. | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LX Sedan 4-Door | Calif. | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | ES Sedan 4-Door | Calif. | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LX Sedan 4-Door | Calif. | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | ES Sedan 4-Door | Calif. | 
| 1994 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LS Coupe 2-Door | B1S1 Calif. Emissions OE MFR: NTK | 
| 1994 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LS Coupe 2-Door | B2S1 Calif. Emissions OE MFR: NTK | 
| 1995 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LS Coupe 2-Door | B1S1 Calif. Emissions OE MFR: NTK | 
| 1995 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LS Coupe 2-Door | B2S1 Calif. Emissions OE MFR: NTK | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LX Sedan 4-Door | B1S1 Calif. Emissions OE MFR: NTK | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | ES Sedan 4-Door | B1S1 Calif. Emissions OE MFR: NTK | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LX Sedan 4-Door | B2S1 Calif. Emissions OE MFR: NTK | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | ES Sedan 4-Door | B2S1 Calif. Emissions OE MFR: NTK | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LX Sedan 4-Door | B1S1 Calif. Emissions OE MFR: NTK | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | ES Sedan 4-Door | B1S1 Calif. Emissions OE MFR: NTK | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LX Sedan 4-Door | B2S1 Calif. Emissions OE MFR: NTK | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | ES Sedan 4-Door | B2S1 Calif. Emissions OE MFR: NTK | 
| 1994 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LS Coupe 2-Door | California | 
| 1994 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LS Coupe 2-Door | California | 
| 1995 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LS Coupe 2-Door | California | 
| 1995 | Mazda | MX-6 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LS Coupe 2-Door | California | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LX Sedan 4-Door | California | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LX Sedan 4-Door | California | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | ES Sedan 4-Door | California | 
| 1994 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | ES Sedan 4-Door | California | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LX Sedan 4-Door | California | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | LX Sedan 4-Door | California | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | ES Sedan 4-Door | California | 
| 1995 | Mazda | 626 | 2.5L 2497CC V6 GAS DOHC Naturally Aspirated | ES Sedan 4-Door | California |