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EQT Coil Grounding Kit (CGK) for EA888.3

Equilibrium Tuning, Inc.

  • $ 125.00

NOW TAKING PRE-ORDERS. The pictured product is of the beta unit

The EQT Coil Grounding Kit (CGK) is designed and engineered to provide a simple solution for a common problem on the MQB EA888.3 Platform.

The Problem:
The factory cam cover is soft aluminum and is prone to stripping regardless of how careful you are when removing or installing the OE stud. Your ignition coil uses this stud to ground the coil circuit and any amount of damage can occur in a weak ground which may induce unnecessary knock retard or reduced spark energy, even if the threads are only mildly damaged.

The bolt is often removed and installed when servicing the ignition system or performing engine testing. Such as replacing spark plugs, ignition coils, performing compression, or a leak down test, etc.

VWAG in their infinite wisdom also uses oval bolts which exacerbates the problem the more times they're removed and installed. 

The Solution:
By isolating the ignition coil ground to its own circuit and grounding it to the chassis, the need to remove the top nut is no longer necessary and the risk of having a weak, loose, or damaged ground is removed.

While you still need to remove the stud in order to remove the ignition coils, you don't need to "double nut" it anymore in order to ground the circuit -- preventing the chance of a weak circuit.

Without the need for a stud on top of the bolt, you can easily replace your existing hardware with round M6x1.0 thread pitch bolts instead of the OE oval hardware.

OE Hardware is N91229201 and measures 45mm UHL (Under Head Length) and 12mm OHL (Over Head Length). To replace this stud with an appropriate size bolt you would want M6x1.0 x 45mm

High-Quality Construction Materials:
This Coil Grounding Kit (CGK) is constructed of only the highest quality materials including the following:

  • 16AWG and 10AWG M22759/32 Tefzel Wire
  • Raychem SCL Heat Shrink
  • Raychem DR-25 Protective Sleeving
  • 18-8 Stainless Steel M6 Hardware
  • M6 Bore Tin Plated Copper Ring Terminals

Assembly Quality:
Each kit is assembled by hand in the USA to ensure the highest level of quality control.

Kit Contents:
Installation Instructions with High-Resolution images and clear steps
1 x Precision Made Coil Grounding Harness
4 x M6 x 1.0 x 8mm Stainless Steel Hex Cap Screws
4 x M6 x 1.0 Stainless Steel Flat Washers

Standard Kit Vs. Pro-Kit:
Standard Kit: 
Includes M6 stainless hardware to attach the harness to your existing OE coil pack ground wires. **This is the easiest method of installation and is easily hidden under the factory plastic wire loom and engine over

Pro-Kit: Does NOT include M6 Hardware as a method of attachment. Instead, the CGK is terminated into OEM 3.5 Series terminals with an amp seal which replaces the factory grounding wire entirely. **This installation method requires pinning and depinning of the factory connector and is covered in detail within the installation instructions.

The Pro-Kit also allows you the option to replace any damaged OE coil pack connectors with new factory connectors (OEM PN: 4D0 971 994) which is also fairly common on this engine. Detailed instructions are provided with the pin assignment and wire colors to aid in this process.

All MQB EA888.3 Powered vehicles.

  • GTI/GTI & Golf R - Utilize the Grounding Lug behind the passenger Headlight
  • A3/S3 - May need to utilize the M6 threaded hole on the engine mount if the grounding lug is not accessible

Installation Instructions

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