| Also known as | 15T, E5660 |
| Diagram | Fig. 4 — MANIFOLD AND TAPPETS · ref 2 |
| Subsystem | engine top |
| Listed in parts books | 1967, 1970–1971, 1974, 1976–1978, 1980 |
MANIFOLD GASKET TR6/TR7
Inlet manifold-to-head gasket for TR6/TR7 single-carb models, PN 70-5660.
This is the manifold gasket for TR6/TR7 models, sitting between the inlet manifold and the head where the single-carb intake bolts on. It seals that joint so the engine draws clean air through the carburetor instead of pulling in unmetered air around a leaking gasket, which is the kind of thing that causes hard starting and a lean, hunting idle. The catalog lists it under 70-5660, with E5660 and the older 15T as earlier forms of the same part, and it shows up across manifold and tappet figures from 1967 through 1980.
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It's a simple flat gasket, cheap enough to keep a couple in the drawer whenever you've got the manifold off for anything else. Given how often these get disturbed during carb work or head removal, it's not a bad idea to have a fresh one on hand rather than reuse the old one.
Our records show this part superseding the older 70-3334 number, so if your parts book lists that older figure, this is the current equivalent.
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