Honda B7ZA 4-Speed Automatic Transaxle · Honda / Acura · Expert rebuild service since 1987. Lifetime warranty. Free diagnostic.
2002–2006 Honda CR-V, 2003–2006 Honda Element (4WD)
| Configuration | 4-speed automatic FWD/AWD transaxle with rear diff unit |
|---|---|
| Gear Ratios | 1st 2.76:1 · 2nd 1.55:1 · 3rd 1.03:1 · 4th 0.71:1 · Rev 2.05:1 |
| Fluid Type | Honda ATF-Z1 |
| Fluid Capacity | 6.8 qts total, 3.2 qts service refill |
Shares the clutch pack vulnerability of the broader B7-series family. CR-V usage with AWD load accelerates wear.
Symptoms: Slip or shudder on 2-3 upshift, RPM spike under moderate acceleration, DTC P0732
The rear torque transfer pump fails on AWD CR-V units, causing loss of rear drive engagement and a grinding noise from the rear unit.
Symptoms: AWD warning light, rear-wheel slip on wet roads, grinding noise from rear differential area
TCC friction material wears, causing highway shudder that is often misdiagnosed as driveline vibration.
Symptoms: Vibration at 40–55 mph, shudder during light-throttle cruise, DTC P0740
B7ZA rebuild replaces all clutch packs with upgraded frictions. AWD units receive rear differential pump inspection and replacement as needed. Torque converter is rebuilt. Valve body solenoids are replaced. All seals and bearings are renewed.
Change ATF-Z1 every 30,000 miles. For AWD CR-V, also service the rear differential fluid every 30,000 miles with Honda DPS fluid — the two are separate systems.
2002–2006 Honda CR-V and 2003–2006 Honda Element with 4WD.
No — this typically indicates rear differential pump failure. Continued driving can damage the rear diff beyond economical repair.
Yes, it shares that vulnerability. Rebuild units include the upgraded clutch pack.
A full rebuild ranges $1,550–$2,050 at Chicago Transmission depending on AWD components needed.
Yes, from Honda dealers and some parts suppliers. We stock it for all Honda services.
Free diagnostic, written estimate, lifetime warranty. Chicago's B7ZA rebuild specialists since 1987.
