MerCruiser Alpha One R/MR 59830A1 U-Joint Yoke Outdrive Upper 83-90 Stern Drive Timing Cover Shift Spool Assembly 818349T1

Shift Spool Assembly 818349T1

Roughly 1965 to the early 1970's

bolts & screws

Mercury 400E

5L from the 1970-1982 time period where it used the type of exhaust manifold where it had the aluminum cover mount for the carburetor)

MerCruiser Alpha One R/MR 59830A1 U-Joint Yoke Outdrive Upper 83-90 Stern Drive Timing Cover Shift Spool Assembly 818349T1Item Details & Compatibility This is a Yoke Assembly for alpha one R MR Alpha One Gen I (1983 1990) Also this would be compatible with 1971 1982 V8 305 350 Stern Drives that required the longer edition yoke (4cyl & 6cyl engines from that time 71' 82' used what was called a "short yoke") The yoke style was used in the years described above regardless of engine gear ratio of outdrive. I. E. 120hp 2. 5L 140hp 3. 0L 165hp 4. 1L, 470 165hp 3. 7L 4cyl 4. 3L