Crankshaft key (Woodruff key) 2x3,7x9,5

Crankshaft key 2 × 3,7 × 9,5 mm – a segment key, also called a half-moon key or a Woodruff key: a steel part with a flat top edge. It fits into the shaft's keyway and holds the flywheel so it cannot turn on the shaft.

• Three numbers in the name – thickness 2 mm, height 3,7 mm and length 9,5 mm; this is the order shown on the manufacturer's drawing for this category
• The bottom is curved to match the shaft's keyway, the top is flat – the same profile is visible in every photo in this category
• A worn key can be recognised by a rubbed side and rounded edges – that already lets the flywheel shift on the shaft, and with it the ignition timing drifts
• The same category has a 2,5 × 3,7 × 9,5 mm DERBI key – the same height and length, but 0,5 mm thicker
• This card's photo is shared with keys of other sizes – it shows neither dimensions nor a drawing, so we rely only on the numbers in the name

We write only what we know. The supplier calls this part a split pin, but the photo does not show a split pin, but a segment key; these are different parts, so we are checking the name with the maker. Which engine this key is for is not stated in the name, and we do not guess. Before ordering, measure your old key or the shaft's keyway – thickness, height and length – and send us a photo; we will check it before you order.

24-month warranty · tel. +370 685 777 56