Automatic Transmission Filter Honda 25420-5Y4-003 – e:HEV / Hybrid

Honda Hybrid Transmission Filter 25420-5Y4-003 – Genuine e:HEV Component

The genuine Honda transmission filter 25420-5Y4-003 is engineered specifically for hybrid e:HEV models equipped with Honda’s dedicated electric-hybrid drive units. Unlike traditional ATF-based automatics, these transmissions use HEVF TYPE-1 (Hybrid Electric Vehicle Fluid), developed for hybrid reduction gears, clutch-pack lubrication and electric motor cooling. This filter maintains proper oil flow, ensures long-term reliability and supports optimal hybrid efficiency.

Compatible Honda Models

Honda Civic e:HEV

• Civic 4D e:HEV – non-EU markets
• Civic 5D e:HEV (2023–2026) – Engine: LFC1, Transmission: MGAE

Honda CR-V Hybrid / e:HEV

• CR-V e:HEV (2021–2023) – Engine: LFB1, Transmissions: MTBE / MTAE
• CR-V Hybrid (2019–2020) – Engine: LFB1, Transmissions: MTBE / MTAE

Honda Prelude (2026– )

• Engine: LFC1, Transmission: MZFE

Honda ZR-V e:HEV

• ZR-V e:HEV (2023–2026) – Engine: LFB17, Transmissions: CERE / CEGE

Why This Filter Is Essential

• Designed exclusively for hybrid transmissions using HEVF TYPE-1 fluid
• Maintains proper fluid pressure and cooling performance
• Protects hybrid drive motors and reduction gears from contamination
• Prevents premature wear of clutch packs and hydraulic circuits
• Ensures smooth, quiet and efficient hybrid operation
• 100% genuine Honda part with guaranteed fitment

FAQ – Honda Hybrid Transmission Filter 25420-5Y4-003

Does this filter work with traditional ATF?
No. It is designed only for hybrid systems using HEVF TYPE-1, not for ATF-based transmissions.

Do different hybrid models use the same filter?
Yes – all listed e:HEV and Hybrid models share compatible hybrid transmission designs.

How often should the hybrid transmission filter be replaced?
Honda typically recommends replacement during hybrid transmission service intervals or when HEVF fluid is changed. Frequency may vary depending on driving conditions.