Our Aluminium T-Piece range covers weldable and clamp-on T-fittings for intake and intercooler plumbing. Use them to add bypass/recirc (e.g., BOV), vacuum or sensor (IAT/MAP) take-offs, or to split/merge cold-side branches. Offered in popular diameters with matching take-off sizes, the lightweight aluminium body keeps routing clean and easy to package.
Net price: 9 €
Net price: 8 €
Net price: 10 €
Net price: 10 €
Net price: 10 €
Net price: 10 €
Net price: 13 €
Net price: 15 €
Net price: 16 €
Net price: 12 €
Brief summary & key benefits
Aluminium T-Pieces let you add a take-off to an existing cold-side run with a single component. They’re ideal for bypass/recirc (BOV) plumbing, vacuum services and sensor (IAT/MAP) ports, or for splitting/merging branches in intake and intercooler systems. The lightweight aluminium body keeps packaging simple while resisting corrosion and looking tidy in the bay.
Technical Basics
A T-piece consists of a straight main run and a perpendicular branch stub. It’s intended for the intake/intercooler side—not for exhaust heat. Smooth internal geometry and accurate fitment minimise losses; internal steps or abrupt edges can trigger turbulence and pressure drop. Units are offered in multiple diameters and branch sizes so you can match the main line while sizing the take-off for the connected device. Keep metals consistent within a section to reduce galvanic risk; where aluminium meets steel, isolate with silicone/EPDM couplers.
Common pitfalls include poor orientation (e.g., the branch facing into a bend), placing the branch too close to other fittings, leaving a step at the joint, or using undersized clamps. All of these increase restriction or cause leaks over time.
Selection Criteria
Main diameter: match your system’s nominal OD between the turbo, intercooler and throttle body. Branch size: pick to suit the device—BOV, PCV, vacuum manifold or sensor boss. If there’s a large size difference, blend the internal transition to preserve air velocity. Choose between weld-in versions (permanent, rigid geometry) and clamp-on joiner styles (fast serviceability). For long unsupported spans or harsh duty, prefer heavier wall sections and add mounts.
Placement: install the T-piece in a straight, calm-flow region and leave adequate straight length each side for clamps. Keep clear of fans, looms and heat sources; for sensors, provide a stable flow area and appropriate thermal isolation. For BOV recirc, aim the branch so re-introduced air doesn’t collide head-on with the main stream.
Installation & Maintenance
Plan the route, mark cut lines, then cut square, deburr and degrease. With clamp-on versions, use quality stainless T-bolt or W-series clamps and tighten evenly to avoid ovalising the tube. For welding, fixture the parts securely and control heat input—aluminium expands more and conducts heat faster than steel. After assembly, pressure- or smoke-test for leaks and re-torque clamps after initial heat cycles. Periodically check mounts and branch hoses for chafe, and verify that hoses aren’t carrying the weight of ancillary devices.
FAQ
Can I use an aluminium T-piece on the exhaust side?
No—use stainless for hot sections; aluminium T-pieces are for cold-side plumbing.
What branch size should I choose?
Match the connected device (e.g., BOV outlet, vacuum hose, sensor boss) and aim for a step-free internal transition.
Weld-in or clamp-on?
Weld-in is permanent and rigid; clamp-on joiners are quicker to install and service.
Where should the branch point be?
In a straight, calm section with enough straight length for clamps; avoid immediately after sharp bends.
Why is my joint leaking?
Usually burrs, angled cuts, undersized clamps or a stepped joint—re-cut square, deburr and tighten evenly.
