| Listed in parts books | Not catalogued by year yet |
CASE BOLT 5/16 CEI 3 1/8
5/16 CEI case bolt, 3 1/8 inches long, for Triumph engine cases.
This is a case bolt, 5/16 CEI thread, 3 1/8 inches long, listed under Triumph part number 68-0031. Case bolts like this hold the engine cases together, and the length and thread size are called out right in the description so you can match it against what's coming out of your motor.
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We don't have more detail on this one beyond the basic spec. If you're replacing a single bolt out of a set, best to bring the old one in or check the length against your case before ordering, since engine bolts often come in a handful of lengths depending on where they sit.
Call the shop if you're not sure this is the right length or thread for the hole you're filling.
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