Details
| Also known as | E3741 |
| Diagram | Fig. 4 — CYLINDER BLOCK AND HEAD, 3TA AND T90 · ref 17 |
| Subsystem | engine top |
| Listed in parts books | 1964–1965 |
Outer valve spring
Outer valve spring for the 3TA and T90 cylinder head, part number 70-3741 (also E3741).
PN · 70-3741
This is the outer valve spring for the top end on the 3TA and T90 twins, part number 70-3741, also listed as E3741 under the old letter-prefix system. It lives in the cylinder head, working alongside the inner spring to close the valve after the cam and rocker push it open.
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