Part: Honda CB550 / CB550K / CB550F Intake Manifold O-ring Kit. Sold In Sets of 4
Why You Need This: If you're going through the fuel system on your Honda CB550 there are a few pieces you should swap out while you're at it. These o-rings sit between the aluminum intake manifolds and the cylinder head. Two screws hold each bank of two plenums to the engine block, allowing access to the grooves these o-ring seat in. While that's all apart its a good time to replace your dried out intake boots.
Installation Tip: Use a small dab of light grease on the manifold side to keep the o-rings in place as your bolt the intake manifolds to the engine.