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We offer both the original equipment
MAZDAconverters, and after-market replacement units. The
after-market units are direct replacements, and are 50 STATE
LEGAL.
For specific years/models where both are not listed, it is
due to either the after-market ones not being available, or they are more
expensive than the factory ones.
All "replacement" (aftermarket) main converters are "high-flow" -- meaning they flow better than the Mazda original ones.
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| 79 and 80 | Headpipe | 40-620A-8871 |
| Heat Exchanger | 40-3200-8712 | |
| 81 and 82 | MAZDA monolithic (first) converter | 40-4000-N201 |
| MAZDA main converter | 40-3000-N231 | |
| Replacement main converter | MZ1925 | |
| 83 12A | MAZDA monolithic (first) converter | 40-4000-N231 |
| MAZDA main converter | 40-3000-N231 | |
| Replacement main converter | MZ1925 | |
| 84 and 85 (12A only) |
MAZDA first mono. from 2/84, w/ tube | 40-780C-N249 |
| MAZDA monolithic(second, M/T) | 40-400B-N249 | |
| Replacement (second, M/T) | MZ4185 | |
| MAZDA monolithic (second, A/T) | 40-400B-N250 | |
| Replacement (second, A/T) | MZ4182 | |
| MAZDA main converter | 40-3000-N304 | |
| Replacement main converter | MZ1926 | |
| 84 and 85 13B GSLSE | MAZDA monolithic (first) converter | 40-7800-N305 |
| MAZDA monolithic (second) converter | 40-400B-N249 | |
| MAZDA main converter | 40-3000-N304 | |
| Replacement main converter | MZ1926 | |
| 86 through 88 Non-turbo | MAZDA monolithic (first, M/T) | 20-500A-N326 |
| MAZDA monolithic (first, A/T) | 20-5000-N327 | |
| MAZDA monolithic (second) | 20-5500-N326 | |
| Replacement (second) | MZ4193 | |
| MAZDA main converter | 20-600A-N326 | |
| Replacement main converter | MZ1927 | |
| 89 through 92 Non-Turbo (Note: These do not use a "first monolithic") |
MAZDA mono ("second") converter | 20-550A-N350 |
| MAZDA main converter | 20-600A-N350 | |
| Replacement main converter | MZ1927 | |
| 86 through 88 Turbo | MAZDA monolithic converter | 20-5000-N332 |
| Replacement monolithic converter | MZ1942 | |
| MAZDA main converter | 20-6000-N332 | |
| Replacement main converter | MZ1927 | |
| 89 through 92 Turbo | MAZDA monolithic converter | 20-500A-N370 |
| MAZDA main converter | 20-6000-N370 | |
| Replacement main converter | MZ1927 | |
| 93-95 w/Manual Trans |
MAZDA monolithic converter | 20-5000-N3A1 |
| MAZDA main converter | 20-600A-N3A1 | |
| 93-95 w/Automatic Trans |
MAZDA monolithic converter | 20-5000-N3A2 |
| MAZDA main converter | 20-600A-N3A2 |
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