These aluminum items permanently replace the stock rubber insulators and are able to seal with rubber orings which are included.
Spend a little more once, and never have to do anything else here. These are anodized black to satisfy the most anal restoration "expert" to look original. Original intake manifold insulators are rubber - I sell those - but they dry out from all the heat and crack, allowing air to get sucked into the intake tract. This can cause BIG problems, causing the engine to run poorly and possibly burning valves.
Sold in pairs. 1 kit includes 2 alloy spacers with oring insulators. Please choose 52mm or 58mm stud spacing measured center to center...
