Verify your coil pack connector part number for fitment prior to purchase - See below
Customers who fail to verify their coil pack connector and purchase the incorrect unit will not be eligible for refunds/returns.
All MQB EA888.3/EA888.4 Powered vehicles with 4D0 971 994 coil pack connectors will require the CGK Pro 4D0. For all others see below for fitment.- GTI/GTI & Golf R - Utilize the Grounding Lug behind the passenger Headlight
- A3/S3 - The grounding lug is located behind the passenger headlight on the frame, closest to the fender. You may also utilize the M6 threaded hole on the engine mount if the grounding lug is not easily accessible
- 8Y A3/S3 - You may want to route the grounding lug to the driver side and utilize the OE chassis grounding location near the rear of the battery.
- Mk8 - Fitment confirmed. Same as Mk7/Mk7.5
- Vehicles with With connector 8K0 971 994 you require the Pro 8K0 Kit and will not work with the 4D0 connector.
Customers who fail to verify their coil pack connector and purchase the incorrect unit will not be eligible for refunds/returns.
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.
Pro-Kit:
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.
Fitment:
All MQB EA888.3/EA888.4 Powered vehicles with 4D0 971 994 coil pack connectors will require the CGK Pro 4D0. For all others see below for fitment.
- GTI/GTI & Golf R - Utilize the Grounding Lug behind the passenger Headlight
- A3/S3 - The grounding lug is located behind the passenger headlight on the frame, closest to the fender. You may also utilize the M6 threaded hole on the engine mount if the grounding lug is not easily accessible
- 8Y A3/S3 - You may want to route the grounding lug to the driver side and utilize the OE chassis grounding location near the rear of the battery.
- Mk8 - Fitment confirmed. Same as Mk7/Mk7.5
- Vehicles with With connector 8K0 971 994 you require the Pro 8K0 Kit and will not work with the 4D0 connector.
Installation Instructions (PDF)
