b'FEATURE As for s suffer a common issue with the swirl flaps in the inlet manifold. The screws holding the butterflies can come loose can cause severe damage to your engine. The easiest way to prevent this damage occurring to your engine is to replace these swirl flap bungs with these. The AW-5083 aluminum alloy is characterized by high fatigue strength, very good weldability and corrosion resistance. It is suitable for hardening and protective anoding. The AW-5083 aluminum alloy is used in the automotive industry, shipbuilding, mechanical engineering, welded constructions, in the construction of foam molds, and in the construction of general purpose equipment. 4X33mm bungs with intake manifold gaskets kit. Swirl flap substitute of the suction manifold (33 mm) with Viton O-rings material resistant to oil derivatives, as well as high and low temperatures The bungs are machined from high grade aluminium using state of the art CNC technology. Easy to install. Directly swap with your existing swirl flaps, simply push in and screw in place. There will be no difference in performance from you vehicle, you may even notice an improvement if your swirl flaps have deteriorated. SPECIFICATION Material: Plastic & Aluminium Color: 4 color Diameter: 33mm/1.3 Weight: approx. 20g For 1pc Quantity: 1 Set(some accessories demo in the picture are not included ) Note:Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included: 6 x for Diesel Swirl Flap