30mm Modified Racing Car Engine Cover Lock, CNC Aluminium Alloy Button Type Mini Cover Lock with 55mm Screw Length, Universal Fit for Most Vehicle Models Available in Silver, Black, Gold, Blue, Red
30mm Universal Engine Cover Lock: CNC Aluminium Fastening for Modified Vehicles

This 30mm button-type engine cover lock offers a reliable, compact fastening solution for modified racing cars and general vehicle models. Constructed from CNC-processed aluminium alloy, it is designed for universal fitment, providing a secure hold for engine covers in confined spaces. Supplied with a 55mm long screw and nut, it is a straightforward, single-component upgrade for enthusiasts and mechanics seeking a durable, colour-coded fastening option.
Features and Construction

The lock's primary design focuses on providing a robust, low-profile fastening point. Its specifications are tailored for small engine bays and aftermarket covers where standard fittings may not be suitable.
Material and Build
The lock head is manufactured from aluminium alloy via CNC processing. This material is selected for its combination of low density and high strength, contributing to a component that is both lightweight and durable. The alloy also offers good conductivity and corrosion resistance, which are practical benefits in an engine bay environment. The accompanying screw is made from iron, providing the necessary threaded strength for secure installation.
Size and Practical Fit
With a head diameter of 30mm, this cover lock maintains a compact profile suitable for smaller engine covers or areas with limited clearance. The installation screw measures 55mm (2.17 inches) in length, offering sufficient thread engagement to secure covers firmly without excessive protrusion. This specific sizing makes it a viable universal option for a wide range of vehicle models where a standardised small-diameter lock is required.
Uses and Placement

This product serves a clear functional role in vehicle maintenance and modification, suitable for both dedicated motorsport applications and general automotive use.
Event or Professional Use
For modified racing vehicles, the lock provides a secure method to fasten lightweight or custom engine covers that must remain firmly in place during high-vibration, high-performance conditions. Its universal design means it can be adapted to various custom setups where original fasteners are missing or inadequate. The availability of multiple colours allows for colour-coding or matching a vehicle's livery.
Everyday Home Use
For general vehicle owners or hobbyists, this lock offers a replacement or upgrade solution for worn, lost, or damaged standard engine cover fasteners. Its straightforward single-screw installation makes it accessible for DIY fitting. Choosing a colour can also serve a minor aesthetic purpose, allowing the fastener to blend in or provide a subtle accent under the bonnet.
Benefits and Buying Value

The value of this product lies in its specificity, material choice, and straightforward application, rather than in invented premium claims or unsupported performance guarantees.
Reuse and Low Maintenance
As a metal mechanical component, the lock is designed for repeated use—it can be unfastened and refastened as needed for engine access. The aluminium alloy's noted corrosion resistance suggests it will maintain its appearance and function in typical under-bonnet conditions without requiring special treatments, aligning with low-maintenance ownership.
Why Choose This Product
This cover lock is chosen for its exact specifications: a 30mm head, a 55mm screw, aluminium alloy construction, and universal fit. It addresses the specific need for a small-diameter, durable fastener for engine covers, particularly in modified or older vehicles where original parts may be unavailable. The five colour options provide a basic level of personalisation not always available with standard mechanical fasteners.





