Direct answer: these Inline Tube brake lines are designed to fit 1978–1988 GM G-Body vehicles, offering factory bends, correct fittings, and corrosion-resistant material. They suit restaurateurs and daily drivers seeking reliable, OEM-style replacements that maintain proper brake system performance. This guide highlights five top options, grouped by front or rear lines and material, to help you pick the right kit for your G-Body project.
Summary of selected products: a quick reference to the five options below.
| Product | Material | Front/Rear | Notes |
|---|---|---|---|
| Inline Tube Front Brake Line Kit 4pc (GM G-Body, 1978-88, Without Hydroboost) | SAE Stainless Steel | Front | Corrosion resistant; factory bends |
| Inline Tube Front Brake Lines 2pc (3/16″, 1/4″ M/C) for G-Body 1978-88 | Tin-coated Steel | Front | Original-equipment grade tin-coated tubing |
| Inline Tube Rear Axle Lines 2pc (G-Body, 1978-88, Stainless) | SAE Stainless Steel | Rear | Corrosion resistant, CNC manufactured |
| Inline Tube Rear Axle Lines 2pc (G-Body, 1978-88, OE Steel) | Original Equipment Steel | Rear | Tin-coated steel for OE feel |
| Inline Tube Front To Rear Brake Line 1pc (G-Body, 1978-83, Stainless) | SAE Stainless Steel | Front-to-Rear | Single line option with stainless tubing |
Inline Tube Front Brake Line Kit 4pc, 1978-88 GM G-Body
Product overview: This CNC-manufactured kit is tailored to the 1978–88 GM G-Body, featuring factory-correct bends, fittings, flares, and protective wrap where equipped. It uses corrosion-resistant SAE stainless steel tubing for long-term durability. Best for: front-end brake line restoration on street-ready G-Bodies that prioritize longevity and precise OEM fit.
Why chosen: It mirrors factory specifications in bends and fittings, ensuring a clean installation that preserves brake pedal feel. Best for owners who want stainless steel durability and a straightforward bolt-in replacement for the front lines.
Caution: Stainless steel is robust, but ensure clip and wrap compatibility with your specific model year to avoid clearance issues near suspension components.
Inline Tube Front Brake Lines 2pc (3/16″, 1/4″ M/C) for G-Body 1978-88
Product overview: This kit provides two front lines with factory bends and fittings, using original equipment grade tin-coated steel tubing. It’s CNC manufactured for a precise fit on 1978–88 G-Body vehicles. Best for: builders seeking a cost-effective steel option with OE-grade materials for non-stainless applications.
Why chosen: The tin-coated steel matches traditional OE components, offering reliable corrosion resistance at a lower cost than stainless options. Choose this if you prefer steel tubes with proven mass-production compatibility.
Caution: Steel tubing may be more prone to surface rust over time in harsh environments; consider protective coatings or storage away from moisture.
Inline Tube Rear Axle Lines 2pc, G-Body 1978-88, Stainless
Product overview: This rear axle line set uses SAE stainless steel tubing for corrosion resistance and CNC manufacturing for exact vehicle fit. It features factory correct bends and protective wrap where equipped. Best for: rear brake line replacement on G-Bodies that are exposed to road salt or moisture, where durability matters.
Why chosen: Stainless steel rear lines deliver superior longevity and resistance to corrosion compared with steel. Opt for these if you drive in winter climates or salted roads.
Caution: Stainless lines can be harder to bend on install if adjustments are needed on an older chassis; ensure proper tools and clearance before installation.
Inline Tube Rear Axle Lines 2pc, OE Steel, G-Body 1978-88
Product overview: An OE steel option with tin-coated tubing designed to mimic traditional factory lines. CNC manufacturing ensures accurate bends and fittings for 1978–88 GM G-Body rear lines. Best for: purists seeking original-material lines that align with classic OE aesthetics.
Why chosen: Steel provides a proven balance of rigidity and weldability for older frames. Choose this if stainless is not needed and a more budget-friendly steel option is preferred.
Caution: Steel can corrode in aggressive environments; verify surface protection and plan for regular maintenance to prolong life.
Inline Tube Front To Rear Brake Line 1pc, G-Body 1978-83, Stainless
Product overview: A single stainless steel line designed to run from front to rear, simplifying some installation scenarios on 1978–83 G-Body models. It features factory-correct bends and protective wrap where equipped. Best for: builds where a single, continuous line reduces the need for multiple fittings.
Why chosen: Stainless construction provides corrosion resistance and a clean, single-line routing option. Choose this if you want a minimal number of connection points with stainless durability.
Caution: A single-line design may limit re-routing flexibility in complex engine bays; confirm your chassis layout before purchase.
Inline Tube Rear Disc Brake Conversion Kit with Cross Drilled Rotors
Product overview: This kit includes cross drilled and slotted rotors, calipers, cables, lines, hoses, and mounting hardware for rear disc brake conversion on G-Body vehicles. Best for: enthusiasts pursuing performance-oriented brakes with modern stopping power while retaining overall chassis compatibility.
Why chosen: Comprehensive kit simplifies upgrading to rear disc brakes with compatible lines and hardware. Choose this if you want an integrated upgrade path that includes rotors and calipers in one package.
Caution: This is a broader upgrade kit; verify compatibility with your specific car year and suspension setup to avoid mismatches.
Buying Guide: Key Considerations For G-Body Brake Lines
How do I choose between stainless steel and tin-coated steel? Stainless steel offers the strongest corrosion resistance and longevity, especially in snowy or salted climates, but can be pricier. Tin-coated steel is more affordable and closely matches OEM steel tubes, suitable for typical street use.
Front vs. rear only or full kits: Front-only lines are common for restoration of the engine bay area, while rear lines are critical for complete system reliability. Some buyers prefer all-in-one sets to simplify installation and routing.
Material compatibility: Confirm that the tubing material matches the vehicle’s original specifications and that fittings, flares, and protective wraps conform to your model year. Incorrect bends can cause brake line kinks or leaks.
Climate and environment: If you drive in areas with heavy road salt, stainless steel options often outperform steel or tin-coated steel in the long term.
Installation considerations: Ensure you have the proper tools for brake line work, including tubing benders, flaring tools, and line clamps. Some kits require custom adjustments for perfect fit on certain sub-models.
FAQ
- Which brake line material lasts the longest on a G-Body? Stainless steel generally lasts the longest due to superior corrosion resistance, especially in harsh climates.
- Are these lines compatible with aftermarket hydroboost setups? Some models are designed for non-hydroboost configurations; check packet specifications or product titles to ensure fit for your car.
- Can I install these myself or should I hire a shop? If you have experience with brake line replacement and proper tools, installation is feasible; otherwise, a professional shop is recommended due to safety concerns.
- Do these kits include hardware like clamps and fittings? Many kits include factory-appropriate fittings and some hardware; verify each listing for exact contents before purchase.
- Is a single-line front-to-rear option better for some models? A single-line option can reduce fittings and routing complexity; suitability depends on your vehicle’s layout and frame access.