| Also known as | E12889 |
| Diagram | CYLINDER BLOCK AND HEAD, T120R (EARLIER MODELS) |
| Subsystem | engine top |
| Listed in parts books | Not catalogued by year yet |
Bolt, rocker box
Rocker box bolt for the T120R cylinder head, catalog PN 71-2889 (also E12889).
This is the rocker box bolt listed in the catalog under 71-2889, also known by its earlier E12889 number. It shows up in the cylinder block and head figures for the T120R, both the earlier and later production versions in the catalog, and it's a top-fitted bolt that threads down through the rocker box to hold it secured to the head.
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It's a small piece but an important one — the rocker box covers the valve gear on top of the head, and a bolt that's stripped, corroded, or the wrong length here can mean an oil leak or a box that won't seat properly. If you're rebuilding a top end from this era it's worth checking these over rather than reusing tired originals.
Our records tie this specifically to 1972 catalog appearances, so if your bike is from a different year, check the fitment against your parts book before ordering.
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