| 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 |