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Product Details
| Part Number: | SO-J1-3 |
| Brand: | SynchroTech |
Synchrotech SO-J1-3 – Hardened 3rd/4th Gear Synchro Sleeve for Cable-Style B-Series (1989–1991). Engineered as a direct-fit replacement for the 3rd and 4th gear synchro sleeve in early cable-operated Honda B-Series transmissions (codes Y2, A1, and J1), this precision component restores smooth shifting and reinforces transmission reliability.
Features:
- Specific Application Fitment: Designed explicitly for cable-style B-Series transmissions from 1989–1991 (Y2, A1, J1 codes). Includes a precise 54 mm internal diameter to match OEM fitment requirements.
- Hardened Steel Construction: Built with durable, heat-treated steel to withstand high-load conditions and extended drivetrain stresses—ideal for performance applications or high-mileage rebuilds
- OEM-Level Precision Engineering: Manufactured to strict tolerances, this sleeve ensures seamless interchangeability with the original component—no modification needed for installation.
- Reliable Shift Restoration: Replacing worn or fatigued syncro sleeves can improve shift engagement and overall gear synchronization, especially in worn or well-traveled transmissions.
Fitment:
- Cable B series 1989-1991 (Y2 A1 J1)
- Note: 3-4 synchro measures 54mm ID
The Synchrotech SO-J1-3 Synchro Sleeve delivers a tough, precise, and affordable solution for repairing the 3rd and 4th gear synchronization in early cable-driven B-Series transmissions (1989–1991). Its high-strength construction and accurate OEM fitment make it a top choice for maintenance-oriented enthusiasts and performance rebuilds alike.
WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. www.P65Warnings.ca.gov.
Vehicle Fitment
| Year | Make | Model | Trim |
|---|---|---|---|
| 1990 | Acura | Integra | GS |
| 1990 | Acura | Integra | LS |
| 1990 | Acura | Integra | RS |
| 1991 | Acura | Integra | GS |
| 1991 | Acura | Integra | LS |
| 1991 | Acura | Integra | RS |
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