AC PERFORMANCE 4" (102mm) Straight Aluminum Intercooler Pipe — 11.8" Brushed 6061, 0.078" Wall

AC PERFORMANCE's 4" outside-diameter straight aluminum pipe is a 11.8" (300mm) 6061 alloy tube engineered for intercooler, intake and custom turbo plumbing needs.

This straight aluminum intercooler pipe delivers a durable, low-restriction passage for boosted or cold-air systems. Machined from 6061 aluminum with a brushed finish, the tube is sized at a 4" outside diameter and a 0.078" (2mm) wall thickness, making it easy to trim, join or weld into bespoke piping runs. Whether you're fabricating intercooler piping, an air intake, or patching a charge-air line, this section offers consistent inner flow and corrosion-resistant performance for aftermarket and custom projects.

What are the key dimensions and material details?

The pipe measures 4" OD (102mm) with an 11.8" (300mm) overall length and a 0.078" (2mm) wall thickness. It is manufactured from 6061 aluminum alloy for a balance of strength and weight savings.

• Outside diameter: 4" (102mm)
• Length: 11.8" (300mm)
• Wall thickness: 0.078" (2mm)
• Material: 6061 aluminum alloy with brushed surface treatment

How does this tube perform in intercooler and intake systems?

The straight, uniform bore minimizes turbulence and maintains smooth airflow through charge-air or intake routes. A consistent inner surface helps preserve boost response and reduces hotspots where pressure or heat build-up can occur.

• Mandrel-quality tube profile for steady airflow
• Low-restriction straight section ideal for short runs or transition pieces
• Brushed finish resists surface corrosion and eases installation handling

Can I modify this pipe to fit my custom setup?

Yes — the pipe is intentionally engineered for cutting, splicing, and welding to adapt to custom routing. The 6061 alloy welds cleanly and holds up to fabrication work when joined to similar aluminum sections or silicone couplers.

• Designed to be trimmed to fit tight engine bays
• Compatible with silicone couplers and aluminum weld joints
• Thickness supports repeated fabrication without excessive deformation

What installation or compatibility considerations should I know?

Being a universal straight section, it’s best used where a short, straight link is needed between components. Confirm inner diameter and coupling clearances before ordering to ensure a snug, leak-free joint with hoses and adapters.

• Best for short runs, adapters, or repair sections in intercooler systems
• Pair with matching OD silicone couplers or clamp-style joins
• Verify fit against existing piping and sensor bosses if applicable

Who is this for: Fabricators, tuners, and DIY enthusiasts assembling or repairing turbocharged intake and charge-air systems will find this AC PERFORMANCE straight aluminum pipe useful. It suits anyone needing a short, reliable tube section for intercooler plumbing, cold-air intakes, or custom piping where a 4" OD, 11.8" length, and robust 6061 construction are the right match. If your project requires a smooth, easily modified aluminum section to bridge components or create a custom routing, this tube provides the material and dimensions to finish the job cleanly and reliably.