LLYZFED Engine Compartment Fuse Block — Direct-Fit for 2017–2019 Chevy Silverado & GMC Sierra, Reinforced ABS

This replacement fuse block assembles the battery distribution and engine-bay fusing into a single direct-fit unit designed for late-model Silverado and Sierra trucks. Built from reinforced ABS and metal contacts, the module mirrors OE form and function so you can swap it in without custom wiring. It protects key components such as the engine control unit, anti-lock brake pump and cooling system fuses while offering corrosion and heat resistance for long service life.

Which Chevrolet and GMC trucks will this fuse block work with?

It’s intended for specific 2017–2019 Silverado and 2017–2019 Sierra variants. Check the model year and cab/chassis configuration before ordering to ensure fitment.

• 2017–2019 Chevrolet Silverado 1500 and 2019 Silverado 2500/3500 HD and 1500 LD
• 2017–2019 GMC Sierra 1500 and 2019 Sierra 2500/3500 HD and 1500 Limited
• Matches original mounting points and connector locations for direct replacement

What original part numbers does this replace?

This LLYZFED fuse block is engineered to replace several OE part numbers so it’s simple to find the correct swap for a failed module. Confirm the part number on your existing unit before purchasing.

• Replaces 84354721, 84043745, 84095551 and 84460795
• Designed to meet OE electrical and mechanical interfaces
• Sold as a complete module ready for plug-and-play installation

How durable and reliable is the replacement unit?

Materials and construction are chosen to withstand the engine bay environment: reinforced ABS housing with metal fuse contacts resists impact, heat and corrosion. That makes the block a durable option for restoring reliable fused distribution under the hood.

• Reinforced ABS housing for impact and heat resistance
• Metal terminals and corrosion-resistant finishes on conductive parts
• Manufactured to meet or exceed OEM performance standards

Is installation difficult and what should I expect during replacement?

The unit is built to OE dimensions for a straightforward swap: connectors, bolt holes and sockets align with the original. Basic hand tools and standard safety precautions—disconnecting the battery first—are all that’s required for most DIY installs.

• Plug-and-play connectors match factory harnesses
• Bolt locations line up with original mounting points
• Typical replacement time is short; no modifications needed

Who is this for: LLYZFED’s battery distribution engine compartment fuse block is aimed at owners and technicians of 2017–2019 Chevrolet Silverado and GMC Sierra trucks who need a direct-fit, OE-quality replacement for a damaged or failing engine-bay fuse module. It’s suited to DIY mechanics wanting a reliable, ready-to-install part and to professional shops needing a robust replacement that matches factory specifications. Always verify vehicle compatibility and original part number before ordering to ensure correct fitment.