This item is the right part for all Traction Engines/ Steam Rollers/ Steam Wagons ever made plus the old MM2 engine.
These things do wear out when you've given your engine a bashing or the wear of the passing years takes its toll. Here's a clue to help you decide if you need a new one; there is steam and water everywhere - the wife tells you to put it away - and it hardly turns over.
Length of the fully extended piston from exit end of the cylinder block to the hole for the crankshaft is: 30mm.
