Bosch S6563B Vehicle Battery

Bosch S6 AGM Battery for Heavy-Duty Starting Power

The Bosch S6 High Performance AGM Battery delivers 12-volt starting power with strong cold-cranking output, stable reserve capacity, and maintenance-free operation. Built for vehicles that demand dependable electrical performance, the Bosch S6563B is a direct-fit Group 78 AGM battery for many Chevrolet Express, GMC Savana, Silverado, Sierra, Tahoe, and related applications.

Key Features

• AGM valve-regulated battery with 55 amp hours and 120 minutes of reserve capacity
• 775 cold cranking amps and 890 cranking amps for strong engine starts
• Group 78 case size with side terminals for OE-style fitment
• Maintenance-free design with flushed tops to reduce acid leakage risk
• Full-frame grid construction, micro-fiber glass mat separators, and reinforced internal connections
• Built for stop-start driving, short trips, and stop-and-go traffic
• 4-year free replacement warranty and roadside assistance included by Bosch

Product Details

The Bosch AGM - Valve Regulated line is engineered for vehicles that place higher demands on the battery system. This product line focuses on stable power delivery, improved charge acceptance, and vibration resistance, which matters in trucks, vans, and SUVs that see frequent starts, accessory loads, and demanding daily use. Bosch S6563B is a 12V AGM battery with side terminals and Group 78 sizing, making it a practical replacement for many OE Group 78 applications.

Compatible With many 1991-2026 Chevrolet and GMC truck and van applications, including Chevrolet Express 2500, Chevrolet Express 3500, GMC Savana 2500, GMC Savana 3500, Chevrolet Silverado, GMC Sierra, Chevrolet Tahoe, and related models listed in the fitment data. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What This Battery Helps Solve

• Slow cranking or weak starts in cold weather
• Voltage drop during short-trip and stop-and-go driving
• Battery wear from vibration in trucks and full-size vans
• Reduced reserve power for vehicles with higher electrical demand
• Replacement needs for OE Group 78 AGM starter battery applications

Installation Notes and Fitment Tips

• Fits 2022-2026 Chevrolet Express 2500, N/A
• Fits 2022-2026 Chevrolet Express 3500, N/A
• Fits 2022-2026 GMC Savana 2500, N/A
• Fits 2022-2026 GMC Savana 3500, N/A
• Fits 1996-2021 Chevrolet Express 2500, N/A
• Fits 1996-2021 Chevrolet Express 3500, N/A
• Fits 1996-2021 GMC Savana 2500, N/A
• Fits 1996-2021 GMC Savana 3500, N/A
• Fits 1996-2014 Chevrolet Express 1500, N/A
• Fits 1996-2014 GMC Savana 1500, N/A

Verify Group 78 sizing and side-terminal layout before installation. Some listed applications note dual-battery setups or longer installation access, so confirm the vehicle’s OE battery specification and mounting location before replacement. Bosch S6563B is maintenance free and ready for service once installed.

Quality Assurance

Bosch backs this battery with a 4-year free replacement warranty and roadside assistance. The AGM construction, flushed top design, and reinforced internal build are intended to support reliable starting performance and long service life in demanding automotive use.