LS D581 Billet Aluminum Square Coil Bracket Set (1999–2014)

Clean Up Your Engine Bay with CNC-Machined Precision.

Ditch your ugly, rusted factory steel brackets and upgrade your engine bay with our Premium LS D581 Billet Aluminum Square Coil Bracket Set. Custom-engineered for Gen III and Gen IV LS-based engines, this bracket set provides a sleek, high-end look while delivering the rugged durability your performance build demands.

Machined from aircraft-grade 6061-T6 billet aluminum, these brackets are incredibly lightweight without sacrificing strength. They feature a specialized design that repositions your D581 coils 1-1/8 inches lower toward the center of the valve cover compared to stock locations. This creates a lower profile, offering excellent clearance for custom intake manifolds, fuel rails, or a cleaner, tucked aesthetic.

Key Benefits & Features

• Premium Billet Construction: CNC-machined from top-tier 6061-T6 aircraft-grade aluminum for an exact, high-accuracy fit.

• Anodized Protection: Finished with a sleek, corrosion-resistant anodized coating that protects against harsh engine heat, moisture, and road grime.

• Low-Profile Styling: Moves coils 1-1/8" down toward the center of the valve cover to tuck them away from the intake manifold.

• Complete Hardware Kit: Comes with all the necessary premium mounting hardware required for a straightforward replacement of your old, damaged factory brackets.

Technical Specifications

• Material: 6061-T6 Billet Aluminum

• Manufacturing Process: Full CNC-Machined

• Finish: Corrosion-Resistant Anodized

• Coil Placement Shift: 1-1/8" lower than factory placement

• Package Includes: 1x Complete Square Coil Bracket Set (Both Sides) with mounting hardware

Engine & Coil Compatibility

This kit is designed for Chevrolet/GM small block Gen III & Gen IV LS-based V8 engines:

Supported Ignition Coils:

• Direct Fit: Out-of-the-box compatible with D581 / 12558693 square ignition coils.

• D510C Coils: Can be utilized with this bracket set but requires a separate spacer kit to ensure proper clearance.

⚠️ IMPORTANT FITMENT NOTE:

This bracket set is NOT compatible with factory LSA or LS9 valve covers. Please verify your valve cover type and ensure your coils are the square D581 style before placing your order.