MK Deka 551MF 40Ah 12VDC Flooded Lead-Acid Battery

MK Deka 551MF Premium: 12V 450 CCA BCI Group 51 Battery

The MK Deka 551MF is a high-performance 12V automotive battery from the elite Deka Premium (A3) lineup. Specifically designed for compact and mid-sized vehicles requiring a BCI Group 51 fitment, this flooded lead-acid battery delivers the reliable starting power needed for modern "electronics-heavy" sedans and hybrids.

Featuring East Penn’s advanced Power-Perform® Plate technology, the 551MF is built to withstand extreme under-hood temperatures and high-vibration environments, ensuring your vehicle starts on the first turn—every time.

Why the Deka 551MF is the Smarter Choice:

• Exact Fit for Import Sedans: The definitive replacement for many Honda Civic, Toyota Corolla, and Nissan Sentra models that require a compact footprint with specific terminal orientation.
• Left Positive Polarity (51 vs 51R): Crucial for vehicles where the positive cable is on the left. Unlike the 51R (Right Positive), the 551MF ensures a tension-free cable connection, preventing electrical shorts and terminal wear.
• A3™ Advanced-Cubed Technology: Utilizes computer-controlled manufacturing and over 250 quality checks to deliver more "starting power-per-pound" than standard aftermarket batteries.
• Flush Cover Maintenance-Free Design: The manifold-vented flush cover eliminates acid spills and the need for water top-offs, making it a "set and forget" solution for busy drivers.
• Vibration-Resistant Fortification: Reinforced posts, straps, and welds are engineered to absorb road shock, protecting internal components and extending the battery's service life.

For fleet managers and service providers, the 551MF is a risk-mitigation tool designed to lower your Total Cost of Ownership (TCO).

• Maximize Asset Reliability: Engineered to last longer in high-heat engine bays, reducing the frequency of emergency jump-starts and battery replacements.
• Bulk Fleet Solutions: In-stock and ready for immediate dispatch. We offer competitive tiered pricing for commercial accounts and high-volume orders (Case Qty: 20+).
• Sustainability Leader: Proudly Made in the USA and 99% recyclable, supporting your company’s green initiatives while ensuring top-tier quality.

Technical Specifications:

• Brand: East Penn Deka
• BCI Group: 51
• Voltage: 12
• Cold Cranking Amps: 450
• Cranking Amps: 555
• Capacity 20hr: 40AH
• Reserve Capacity: 70
• Chemistry: Lead Acid
• Battery Purpose: Starting Lighting Instrumentation
• Lead Acid Design: Conventional Flooded
• Product Category: Automotive Batteries
• Product Sub Category: Conventional Flooded
• Terminal Type: DIN
• Polarity: Left Positive
• Weight: 28.5 lbs
• Length: 9.375 in
• Width: 5.0 in
• Height: 8.75 in