D4 Version Two Exhaust Cover
Exhaust cover for the screw in style late version D4 and D4 (Special Edition) main housing. Improved design that prevents breaking and easy removal. Insert hose in this port to blow air with your Rainbow.
In the fourth quarter of 1990, the main housing was updated to accept this new exhaust cover.
This item is effective serial number 6878827. Previous item number is R2708, for original version D4 main housing.
You may find a manufacturer stamp of R-3846 on the inside of this item for both the SE and late D4 version.
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