The AC Delco 51RG is a 12V Group 51R flooded lead-acid automotive battery built for reliable starting power. With 500 cold cranking amps, it is a direct OEM-fit replacement for a wide range of domestic and import vehicles.
Specifications
| Group Size | 51R |
|---|---|
| Voltage | 12V |
| Technology | Flooded Lead Acid |
| Cold Cranking Amps (CCA) | 500 |
| Reserve Capacity | 85 minutes |
| Warranty | 42 months |
Will it fit?
Vehicles that call for a Group 51R battery.
Not sure? Use the Battery Finder with your year, make and model, match the group number on your current battery, or call (650) 583-6735.
What you get at Peninsula Battery
- Free battery testing — make sure it’s really the battery before you buy
- Ready in about 1 hour for pickup at our South San Francisco shop
- Same-day local delivery — $35 within 25 miles when you order by 1 pm (Mon–Fri); after 1 pm, next business day
- Installation available at our shop
- Old battery recycling and core exchange (a refundable core deposit may apply)
Why Peninsula Battery?
Locally owned and serving the Bay Area since 1993. Trusted by Bay Area fleets, airlines, healthcare systems and government agencies. DBE and ACDBE certified. Visit us at 1139 Airport Blvd, South San Francisco, or call (650) 583-6735 (Mon–Fri, 8:00 am–4:30 pm).