Volvo VNL Negative Battery Bar - Designed for VNL, VN, VNM (Black) - Replaces 21107829

Ensure a clean, high-conductivity ground connection for your commercial vehicle's power source with this heavy-duty black Volvo VNL Negative Battery Bar by FleetPro Parts & Tires. Specifically designed for VNL, VN, and VNM trucks, this rigid bus bar simplifies your battery box wiring by linking four Group 31 batteries in an in-line parallel configuration. Backed by an industry-leading 18-month warranty, this FleetPro bar provides the structural rigidity and electrical efficiency needed to properly ground heavy-duty starters. We stock these heavily right here in our Hanover Park, Illinois warehouse to ensure lightning-fast shipping for owner-operators and fleets across the Midwest and nationwide.

Professional-Grade Power: The Volvo VNL Negative Battery Bar Advantage

This Volvo VNL Negative Battery Bar is engineered under our own FleetPro brand to strict commercial specifications. It features a heavy-duty conductive core designed to easily handle high-amperage cranking loads without dangerous overheating or voltage drops. The sleek black color-coding provides an immediate visual ground indicator, helping to prevent accidental and costly polarity reversals during maintenance. Note: Because this is a rigid bar, it is precision-drilled to perfectly match the factory battery tray spacing found on Volvo VNL, VN, and VNM models with four Group 31 batteries mounted in-line.

As we continue to build the largest inventory of commercial truck parts in Illinois, we prioritize electrical components that prevent "ghost" codes, weak grounds, and starting failures. This bar serves as a direct, high-quality replacement for expensive OEM numbers like Volvo 21107829 and aftermarket options like Dorman 242-5529N. Upgrading to a new, clean FleetPro bus bar restores the integrity of your grounding system and ensures maximum power delivery across your entire truck.

Vehicle Fitment & Compatibility

This negative battery bus bar is precision-engineered for the following models featuring four Group 31 batteries mounted in-line:

• Volvo VNL (All Years)
• Volvo VNM (All Years)
• Volvo VN (All Years)

Direct Replacement & Cross-Reference Numbers:

This FleetPro rigid bar serves as a direct exact-fit replacement for the following:

• Volvo Truck OEM: 21107829, 20370824, 21107829RMC, 21107829MAS
• Dorman: 242-5529N
• Automann: 178.2024BK
• OE Aftermarket: 4402916

Technical Specifications

• Brand: FleetPro Parts & Tires
• Terminal Type: Negative Battery Cable / Bus Bar
• Color: Black (Visual Ground Indicator)
• Configuration: 4-Battery In-Line Parallel Link
• Battery Size: Group 31
• Warranty: 18-Month Limited Warranty