| Diagram | Fig. 4 — MANIFOLD AND TAPPETS · ref 26 |
| Subsystem | engine top |
| Listed in parts books | 1976–1980, 1985 |
| Also fits (as replacement) | 1974 · for 70-3059 |
LIFTER INLET T140/T120/PU - LFH (70-3059) 3/4 standard radius
Inlet cam follower (tappet) for Triumph T140/T120 unit twins, standard radius, current number for the earlier 70-3059.
71-7008 is an inlet cam follower, better known as a tappet, for the unit-construction Triumph twins with the standard radius cam profile. It rides between the camshaft lobe and the pushrod, following the lobe's shape and transferring that motion up to open the inlet valve. Catalog listings tie it to the T140 and T120 engine families as an inlet-position part, and it's a straightforward wear item that most owners eventually replace as part of a top-end rebuild.
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This number replaces the older 70-3059 listing, so if your parts book still shows 70-3059 for the inlet lifter, that's this same physical piece under its current number. The part shows up across catalog entries from the mid-to-late 1970s.
When you're ordering, keep in mind this is specifically the inlet-side follower with the standard radius grind - if your engine calls for a different radius or you're sorting inlet from exhaust, check the figure in your parts book against what you're pulling out of the motor before you buy.
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