The ATP Automotive TF-129~AT Filter Kit is engineered to maintain the cleanliness of transmission fluid in 1988-1998 Nissan, Mazda, and Suzuki vehicles, including models like the Nissan D21, Pathfinder, and Suzuki Equator. Regular replacement of the transmission filter is essential to prevent debris accumulation, which can lead to clogged valve bodies and other critical components, potentially causing transmission failure. By ensuring the transmission fluid remains clean, the TF-129~AT Filter Kit helps extend the transmission's lifespan and reduces the likelihood of costly repairs. This filter kit is designed for easy installation, providing a direct fit for the specified vehicle models, and is manufactured to meet or exceed original equipment specifications, ensuring reliable performance and durability.