T4 HT Lead Set - 1991-95 - 2.5 Petrol

Poor ignition performance, misfires, and rough running are often caused by failing High Tension (HT) leads. As HT leads age, their internal conductor and outer insulation can break down, allowing voltage leakage and weakened spark delivery. Replacing worn leads is a simple and effective way to restore strong, clean ignition performance on your Volkswagen T4.

These top-quality HT leads are designed specifically for T4 Transporter Buses fitted with the 2.5 petrol engine, covering model years 1990 to 1995. Manufactured to a high specification, the leads feature a thick outer insulating layer surrounding the central conductor core, traditionally made from copper. The heavy insulation prevents arcing from the cable to nearby metal engine components, ensuring consistent spark energy reaches the spark plugs.

HT leads naturally generate RFI (Radio Frequency Interference) due to the high-voltage spark pulse. Poor-quality or degraded leads can allow this interference to radiate into the vehicle`s electrical system, affecting radios, sensors, or other electronics. Modern manufacturing techniques include built-in suppression technology to greatly reduce RFI, making these leads ideal for vehicles with electronic ignition or sensitive accessories.

If your T4 has been upgraded with electronic ignition, or if you run multiple electrical systems, choosing a high-quality HT lead set is essential for stable, reliable performance. These leads are built to meet or exceed OE standards and provide consistent spark delivery across all cylinders.

Supplied as a set of 5 leads for a complete replacement.