loverapple FN01-21-550 Automatic Transmission Speed Sensor: Compatible with multiple Mazda models
Picture this: you're cruising down the highway in your Mazda, and suddenly the speedometer starts acting like a confused compass. That's often the Automatic Transmission Speed Sensor calling it quits. This little gizmo is the unsung hero in models like the Mazda 2, 3, 5, 6, CX-7, and Protege, keeping tabs on the transmission output shaft's speed. It feeds critical data to the car's brain for buttery-smooth gear shifts and peak efficiency. Get it wrong, and you're looking at jerky changes, a thirstier fuel tank, or even transmission meltdown—so yeah, it's kind of a big deal for keeping your ride silky and dependable.
In the trenches, this sensor is your first stop when the speedometer goes haywire, the check engine light flashes transmission trouble, or shifts feel like a jackhammer. Swapping it out? A cinch with basic tools—perfect for weekend warriors or a speedy garage job. Stick with a quality part, and you're not just fixing a glitch; you're boosting transmission longevity and safety, ensuring your Mazda handles everything from city crawls to open-road sprints without a hiccup.
- Ensures accurate speed readings
- Easy installation process
- Durable construction for longevity
- Improves transmission performance
- Compatible with multiple Mazda models
General specs
- Brand: loverapple
- Model: FN01-21-550
- Seller: Joom
- Compatibility: Mazda 2, Mazda 3, Mazda 5, Mazda 6, Mazda CX-7, Mazda Protege
- Type: Automatic Transmission Speed Sensor
- Part Number: FN01-21-550
- First listed by seller: 8/24/25
If you are interested in more details, you can find full information on the seller's page.
Shipping options
United States
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| Brand | loverapple | loverapple | Skyfree | loverapple | feiyanautoparts | NOBU JAPAN |
| Model | FN01-21-550 | 19179715 | 237314M50B | B01A-61-503 | Boost Sensor Adapter | |
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| Price | $24.60 | $48.42 | $49.44 | $39.73 | $27.30 | $119.99 |
| Seller | Joom | Joom | Joom | Joom | Joom | Joom |
| Update | August 16, 2025 | August 16, 2025 | August 16, 2025 | August 16, 2025 | August 17, 2025 | August 17, 2025 |
| Compatibility | Mazda 2, Mazda 3, Mazda 5, Mazda 6, Mazda CX-7, Mazda Protege | Buick Park Avenue, Buick Regal, Chevrolet Impala, Chevrolet Camaro | Chevrolet Silverado 2009-2012, Chevrolet Tahoe 2009-2012, GMC Sierra 2009-2012 | Nissan Armada, Nissan Pathfinder, Nissan Titan, Nissan Sentra | Mazda vehicles | Mazda Demio, Roadster, CX-3, DK5FW, DK5AW, DJ5FS, DJ5AS, ND5RC, RF, NDERC |
| Function | Measures air mass flow for engine management | Measures mass air flow for engine management | Monitors camshaft position for engine timing | Pressure monitoring for air conditioning systems | Boost pressure extraction | |
| Installation | Direct replacement, Plug-and-play design | Direct replacement, plug-and-play design | Direct fit, easy installation | |||
| Material | High-quality plastics and metals | Durable plastic and metal components | Automotive-grade materials | |||
