The 2006 Acura TSX uses a 12-volt lead-acid battery, typically a Group Size 51R.
Context and common specifications
The TSX, a compact luxury sedan, shares its engineering philosophy with related Honda/Acura models. For most 2006 TSX models, the standard replacement and dealer-recommended option is Group Size 51R. The exact specification can vary by market or trim, so it’s important to confirm with the battery label or a VIN-based parts lookup if you’re replacing the unit.
How to verify the exact size for your car
To confirm the precise group size for your individual vehicle, check the current battery for its Group Size marking, consult the owner's manual, or contact a Acura/Honda dealer with your VIN. If you’re shopping aftermarket, look for a Group 51R battery that matches or exceeds the original cold-cranking amps (CCA) and reserve capacity (RC) ratings suitable for your climate.
Replacement tips and considerations
When replacing, prioritize a battery that fits the tray and terminal layout, provides adequate CCA for cold starts, and has compatible terminal orientation. Consider climate-adjusted CCA and RC to ensure reliable starting in your area, and ensure the selected battery has the correct connector configuration for the TSX’s electrical system.
Summary
The 2006 Acura TSX commonly uses a 12-volt lead-acid battery in Group Size 51R. Verify the exact size via the current battery label or VIN-based parts lookup to ensure correct fitment, and choose a replacement with appropriate CCA and RC for your climate and driving needs.