RHAOCZIYAUTO Battery Distribution Fuse Block — Fit for Chevy Silverado & GMC Sierra 2019–2025, OEM-fit Reinforced ABS

RHAOCZIYAUTO Battery Distribution Engine Compartment Fuse Block is an OEM-fit underhood junction block that replaces GM# 84646134, 84493556, and 85015808 for select 2019–2025 Silverado and Sierra trucks.

This replacement underhood battery distribution fuse block routes and protects high-current circuits in the engine bay, supplying power to systems such as the ABS pump, engine control unit (ECU), and cooling components. Built from reinforced ABS plastic and durable metal contacts, it’s engineered to withstand impact, heat, abrasion, pressure, and corrosion so your truck’s critical electrical network remains reliable under road conditions.

Will this fuse block fit my Chevrolet or GMC truck?

Compatibility covers a range of recent Silverado and Sierra models; check model year and trim before ordering. The part is designed to match factory mounting points and connector layouts for direct replacement on compatible trucks.

• Fits Chevy Silverado 1500 (2019–2022) and Silverado 1500 LTD (2020)
• Fits Chevy Silverado 2500HD & 3500HD (2020–2024)
• Fits GMC Sierra 1500 (2019–2023) and Sierra 1500 Limited (2022)
• Fits GMC Sierra 2500HD & 3500HD (2020–2024)

What does this underhood junction block actually do for the vehicle?

The unit distributes battery power and houses fuses and relays that protect vital engine-bay circuits from overloads and short circuits. By organizing high-current pathways close to the battery, it reduces wiring length and heat buildup while keeping sensitive components shielded.

• Protects anti-lock brake (ABS) pump and related controls
• Powers and safeguards the engine control unit (ECU)
• Supplies circuits for cooling system fans and other high-load devices
• Maintains factory routing to minimize installation changes

What materials and durability features does this replacement offer?

The housing is molded from reinforced ABS and uses corrosion-resistant metal contacts designed for prolonged exposure in the engine compartment. Those materials help the assembly resist impact, abrasion, heat, and pressure typical of underhood environments.

• Reinforced ABS plastic resists heat, chemicals, and impact
• Durable metal terminals reduce corrosion and ensure consistent conductivity
• OEM-quality fitment for secure mounting and connector alignment
• Designed for long service life under normal operating conditions

How do I confirm this is the correct replacement part?

Compare the GM OEM numbers stamped on your original junction block with the replacement’s reference numbers and verify electrical connector and mounting locations. If the part numbers 84646134, 84493556 or 85015808 match your original, this unit is produced as a direct replacement.

• Match GM numbers: 84646134, 84493556, 85015808
• Check connectors, relay/fuse layout, and mounting tabs visually
• If uncertain, cross-reference with vehicle service manual or dealer
• Contact seller for fitment questions prior to installation

Who is this for: This RHAOCZIYAUTO Underhood Battery Distribution Fuse Block is intended for owners, mechanics, and fleet technicians working on 2019–2025 Chevy Silverado and GMC Sierra trucks who need a reliable OEM-style replacement for a damaged or failing underhood junction block. It’s suited for those who require accurate fitment to GM part numbers (84646134, 84493556, 85015808) and value durable construction that endures engine-bay conditions. If you’re replacing a worn, cracked, or corroded fuse block or restoring factory electrical reliability after collision repair, this unit provides a direct-fit, high-quality alternative to buying from a dealer.