Defender Wing Top Billet Vents (Pair) + SS Fixings

S C Engineering Land Rover Defender Bonnet Vents

This Is a CAD Rendering i will update when i have some better pictures (Picture 5 is the real finish like the hinges as well) 

Cerakote C Series Graphite Black C-102 – CNC Machined Billet Aluminium

These premium bonnet vents are engineered specifically for the Land Rover Defender. Built from solid billet aluminium and precision CNC machined, they are designed for strength, airflow performance, and a distinctive high-end appearance.

Design Philosophy

When designing these vents, I wanted something I would be proud to fit to my own Defender. I also gathered feedback from the Land Rover community on Facebook to understand what people really wanted from a bonnet vent.

Many aftermarket vents claim to be billet aluminium but use a separate stainless steel mesh fitted underneath the outer rim. This reduces the inner airflow area and doesn't fully utilise the billet material.

With the S C Engineering design, the honeycomb mesh is fully CNC machined directly into the billet aluminium, allowing the inner area to remain large while maintaining the standard border size. The result is improved airflow and a much cleaner design.

The edges are chamfered to catch the light and give the vent a 3D depth and premium appearance, while the honeycomb mesh sits deep within the vent to create visual contrast.

Although this design requires significantly more machining time, the final result is a much higher quality product.

Key Features

• Precision CNC machined from solid billet aluminium


• 10mm thick 6082-T6 aluminium


• Integrated deep honeycomb mesh design


• Large airflow area for improved venting


• Chamfered edges for a premium 3D appearance


• Supplied with stainless steel Torx pin security screws


• Designed and manufactured in the UK


• Finished in Cerakote C Series Graphite Black (C-102)

Cerakote Ceramic Coating

These vents are coated in Cerakote C Series ceramic coating, a high-performance finish used in automotive, aerospace and firearms industries.

Cerakote provides superior durability compared to standard anodising and offers excellent resistance to chemicals, UV exposure and heat.

Cerakote Benefits

• Temperature resistance up to 1800°F


• Excellent UV stability


• Extremely high chemical resistance


• Very durable ceramic finish


• Hard and scratch resistant


• Non-stick surface


• Over 50 colour options available

This coating means you don’t need to worry about washing your Defender with strong cleaners such as TFR (Traffic Film Remover) or screen wash.

In-House Cerakote Process

All Cerakote coating is completed in-house at S C Engineering:

1. Parts are thoroughly cleaned


2. Surfaces are blasted with aluminium oxide to remove imperfections


3. Parts are blown clean and degreased in acetone


4. Cerakote is applied using a dedicated spray gun in a spray booth


5. The coating is left to cure and harden to achieve the final finish

The coating is extremely thin but very durable, giving excellent protection without affecting the precision machining.

Materials

• 6082-T6 Billet Aluminium – main vent body


• Stainless Steel Torx Pin Security Screws – supplied with vents


• Cerakote C Series Ceramic Coating