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EZ-Fit NiCopp Kit, Tahoe Yukon 2003-2006 RPO Code JL4
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EZ-Fit NiCopp Kit, Tahoe Yukon 2003-2006 RPO Code JL4

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EZ-Fit®
Confirmed fitmentTahoe Yukon 2003-2006 RPO Code JL4

A complete, ready-to-install NiCopp brake line kit — pre-bent to fit your exact vehicle.

  • Every hard line pre-bent to your vehicle's factory routing
  • NiCopp (copper-nickel) — corrosion-proof & hand-bendable
  • Pre-flared with fittings — no flaring tools needed
  • Replace all your rusty lines in one afternoon

SKU: CNC-154KIT

$280.70

Since 1931
Tech-Trusted
Satisfaction Guaranteed
EZ-Fit® · NiCopp brake line kit

How it works — 3 easy steps

1
Match

Confirm your year, make, model, cab and bed match this kit's fitment.

2
Swap

Remove the old rusted lines and drop in the pre-bent, pre-flared NiCopp replacements — no cutting or flaring.

3
Bleed

Connect the pre-installed fittings, bleed the brakes, and you're back on the road.

The details

Description

EZ-Fit NiCopp Brake Line Kit — Tahoe & Yukon 2003-2006 (JL4 StabiliTrak)

If your ’03-’06 Tahoe or Yukon is equipped with the JL4 StabiliTrak option, generic line kits won’t match the extra proportioning block and routing changes. The AGS EZ-Fit NiCopp kit is engineered specifically for these SUVs, delivering factory-correct bends, lengths, and port locations. Each nickel-copper line drops into the stock clips, threads into the OE distribution block, and laughs at road salt for the life of the truck. All tubes arrive pre-flared with zinc-plated, metric fittings—just clip, thread, torque, and bleed.

Key Features & Benefits

JL4-Specific Routing – CNC bends follow the unique StabiliTrak plumbing; no re-routing or “close enough” loops.

NiCopp Alloy Tubing – DOT-approved, rust-proof, burst-rated to 10 000 PSI, heat-safe to 1 800 °F, yet easily hand-tweaked for micro-alignment.

Pre-Flared with OEM Fittings – Double-flare, metric threads install without flaring tools or adapters.

Complete System Coverage – Master-cylinder, ABS module, front, rear, crossover, and over-axle lines—plus new clips where required.

DIY-Friendly Tags & Diagram – Every line is labeled for its location; the illustrated guide cuts install time dramatically.

Lifetime Durability – Resists salt, towing vibration, and chassis flex—engineered to outlast the SUV.

Give your JL4-equipped Tahoe or Yukon the corrosion-proof stopping power it deserves. Bolt in an EZ-Fit NiCopp kit and drive away with full confidence in every press of the pedal.

At a glance

Specifications

MaterialNiCopp (copper-nickel) alloy
LinesPre-bent & pre-flared to factory routing
FittingsCorrect fittings installed / included
Cutting / flaringNot required — ready to install
CoverageComplete hard-line replacement for the listed vehicle
Good to know

Frequently asked questions

Will this fit my exact vehicle?
This kit is built for the specific year, make, model, cab and bed shown in the fitment. Match those details to your vehicle exactly — if you're unsure, reach out before ordering and we'll help confirm.
What is NiCopp?
NiCopp is a copper-nickel alloy that won't rust like factory steel lines, bends easily by hand, and is DOT-approved — the professional choice for long-lasting brake lines.
Do I need to cut or flare the lines?
No — that's the whole point of EZ-Fit. The lines arrive pre-bent to your vehicle's routing and pre-flared with the correct fittings installed. Just remove the old lines and install these — no cutting, no flaring.
Does it include everything for the job?
Yes — the kit includes all the hard brake lines and correct fittings for the listed vehicle configuration, ready to install.