| Also known as | JRC 5TPU |
| Listed in parts books | Not catalogued by year yet |
PISTON SET 63mm STANDARD T100 1939-57 - 9-1 COMPRESSION - REPLACES 70-3615 CP161 - Use CP29 for 7:1
Standard 63mm, 9:1 compression piston set for the pre-unit T100, replacing 70-3615 / CP161.
This is a piston set for the pre-unit T100, sized 63mm and listed as standard, with a 9:1 compression ratio. The catalog entry ties it to the model years 1939-57 and notes it replaces the older 70-3615 / CP161 piston number. If you're running a 7:1 engine instead, the notes point you to CP29 rather than this set.
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Since this is a full piston set rather than a single piston, expect it to cover what you need for the rebuild in one package - but always check your bore size and actual compression setup before ordering, since piston sets are matched closely to both.
The alternate numbers GAN24 and JRC 5TPU on file are just other forms of this same part number, so if you see either of those in an old order or parts list, it's the same piston set.
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