Ecotune MQB Fuel Line Upgrade (Not compatible for the 1.8TSI Polo)

A 25% larger bore that removes the factory fuel-line restriction, in a PTFE core with braided armour. E85 Compatible.

Once you're past roughly 500HP on the EA888.3 2.0T, the factory fuel lines become a tangible restriction. The rubber core and narrow bore limit what the LPFP can deliver to the HPFP, and that restriction only gets worse as power climbs. This kit replaces them entirely.

The numbers

Key specifications

• ▸Smooth-bore PTFE core
• ▸Stainless steel armour braid with nylon overbraid
• ▸25% increase in internal bore diameter over OEM
• ▸3,000 psi working pressure / 10,000 psi burst
• ▸Resistant to a broader range of fuel chemicals than OEM rubber lines
• ▸Black aluminium AN-6 fittings with high-flow quick connectors
• ▸FlexFuel sensor provision built into the line (sensor join over inlet manifold)

The full fuel path, covered

Smooth-bore PTFE core with stainless steel armour braid and nylon overbraid. Chemically compatible with E85 blends without degradation. 3,000 psi working pressure, 10,000 psi burst. The internal bore is 25% larger than factory, and we see around a 15% reduction in pump duty cycle as a result, giving you measurably higher headroom with less stress on the fuelling system.

The kit runs the full fuel path. Feed line from the LPFP under the car up to the engine bay, then the engine bay line through to the HPFP. There's a join over the inlet manifold for a FlexFuel sensor, and the fittings for it are included. If you're on Reflex Flex Fuel or planning to be, it's already wired for it.

Two options, not interchangeable

Select the variant that matches your high-pressure fuel pump. If you're unsure which applies, check with your Approved Ecotune Dealer before ordering.

Important

Why Ecotune

These lines go through intensive R&D and testing before they reach any customer. We fit them across our global dealer network and closely monitor results and feedback from every application. If something isn't performing to spec, whether that's a fitment tolerance, a pressure reading, or field durability, we catch it and address it before the next production run. Developed and supported by the team that calibrates your ECU.