| Also known as | E4533 |
| Diagram | CRANKCASE |
| Subsystem | engine bottom |
| Listed in parts books | Not catalogued by year yet |
Crankcase
A Triumph crankcase casting (70-4533, also known by its legacy E4533 number) that houses the crankshaft in the engine bottom end.
70-4533 is a crankcase from the engine bottom end, listed in our records under the CRANKCASE figure. The crankcase is the main casting that houses the crankshaft and forms the lower structure of the engine, tying together the timing side and drive side of the motor.
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Our catalog record for this one is thin - it shows up in a single listing tied to 1964, with the older-style E4533 number as its legacy alias. Beyond that we don't have additional detail on file.
Given how central a crankcase is to the engine, and how little our record tells us about specific model fitment, call the shop and we'll confirm fitment against your engine before you order.
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