Spider, SE, and Upgrade for D4 and D3
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This item has had several upgrades over the years since it was first introduced with the Special Edition model D4C Rainbow.
It was originally a gray color matching the original separator. Then it changed to a yellow-tan color that matches the current R4100 separator. Then if finally was redesigned from the cone shape to what it looks like today. It was also at that time when it became black in color. No matter which version you have, this is a direct factory OEM replacement.
The spider sets under the separator and works directly with the separator. This spider and the R4100 separator was one of the upgrades that were done when the D4C Special Edition (SE) was introduced in 1990.
This has to be purchased as a kit if you are replacing an original R1976 spider from a model D4C or D3C Rainbow. If you have an R1976 currently, then order an R4100, R4101 and H555.