Hybrid Racing K Swap Fuel Line Kit for Civic/Integra

Hybrid Racing K-Swap Fuel Line Kit - EG/EK Civic & DC Integra

A K-swap needs its fuel delivery sorted properly, and this Hybrid Racing kit converts the factory returnless K-series fuel rail into a reliable return-style setup that integrates cleanly with your chassis. No sourcing extra fittings, cutting hoses, or fighting fuel-delivery gremlins, every line is pre-assembled with high-flow AN fittings and built to fit the EG, EK, and DC chassis. It's offered in two versions depending on what fuel you run: standard lines for pump gas, or PTFE-lined for E85 and race fuel. Pick the one that matches your build.

Pick Your Version: Standard Or PTFE-Lined

The most important choice on this page, because it depends entirely on what fuel you're running, and getting it wrong matters.

Standard fuel lines are compatible with pump gas, 87, 89, 91, and 93 octane. If you're running pump gas, now and for the foreseeable future, these are the right choice and the more economical one.

PTFE-lined fuel lines are built for more aggressive fuels, E85 and race fuel. Ethanol and race fuels are chemically harsher and will degrade standard hose over time; the PTFE lining resists them, so if you run (or plan to run) E85 or race fuel, you need this version.

The rule is simple: pump gas, standard lines; E85 or race fuel, PTFE-lined. If there's any chance you'll switch to E85 down the road, it's worth getting the PTFE version now so you're not redoing the lines later. Running E85 on standard lines isn't a chance worth taking, the fuel will break them down.

Returnless To Return-Style, Done Right

The K-series came with a returnless fuel system, and a proper swap setup converts it to return-style for consistent fuel pressure and control.

This kit handles that conversion cleanly. The lines are pre-assembled with high-flow AN fittings, so you're not cutting hoses or crimping your own fittings, they come ready to install. A banjo bolt connects directly to your stock Civic or Integra fuel filter, and the chassis-side adapter mates to your hard line, so it integrates in a clean, factory-style way rather than a hacked-together run of hose. The result is stable fuel pressure under boost or high RPM, which protects your injectors and keeps your air-fuel ratios where they should be.

Built To Last

The construction is proper regardless of which version you choose.

The lines use black nylon hose with abrasion-resistant sheathing that stands up to heat, chemicals, and the flex of an engine moving on its mounts, and the hardware is black zinc-coated for corrosion resistance. The AN fittings seal reliably, and the whole kit is built to fit and last rather than being a temporary fix. Whether you daily the car or push it hard, the fuel delivery holds up.

What's Included

• Feed line (rail to filter)
• Return line (regulator to hard line)
• Vent/overflow line (tank return)
• Banjo bolt with crush washers
• Hard-line adapter with O-ring

Fitment

1992-2000 Honda Civic (EG, EK)
1994-2001 Acura Integra (DC)

For K-series swaps using a return-style fuel setup. Available with standard lines (pump gas) or PTFE-lined (E85/race fuel).

This is for the K-swap builder running an EG, EK, or DC who wants their fuel delivery done right, a clean returnless-to-return conversion with pre-assembled AN lines that bolt in without cutting hoses or sourcing fittings. Choose standard lines if you run pump gas, or the PTFE-lined version if you're on E85 or race fuel (or planning to be), since the harsher fuels need the PTFE lining to hold up. Either way it integrates factory-style to your stock filter and hard line and keeps fuel pressure stable under boost and high RPM. Pick the version for your fuel, bolt it in, and stop worrying about fuel delivery.

Fits: 1992-2000 Civic (EG/EK) and 1994-2001 Integra (DC), K-series swap, return-style setup. Versions: standard lines (pump gas, 87/89/91/93) or PTFE-lined (E85 and race fuel). Function: converts factory returnless K-series rail to return-style. Lines: pre-assembled with high-flow AN fittings, black nylon with abrasion-resistant sheathing. Integration: banjo bolt to stock fuel filter, adapter to factory hard line. Hardware: black zinc-coated. Includes: feed, return, and vent/overflow lines, banjo bolt with crush washers, hard-line adapter with O-ring.