Piaggio Pignone Timing Chain Original 4T Engines – OEM 82782R

The original Piaggio 82782R timing chain sprocket is the steel gear keyed onto the crankshaft that drives the timing chain. It is the original equipment replacement part for Piaggio Leader and Quasar 125 to 400 cc 4T engines, fitted on Piaggio, Vespa, Aprilia, and Gilera vehicles. Product code 82782R.

✓ Key features

• Original Piaggio spare part – code 82782R, the same as the one fitted at the factory on Leader and Quasar engines
• Hardened steel – the teeth are wear-resistant to withstand the chain for the entire life of the engine
• Keyway seat – original crankshaft keying: no play, always correct timing
• One reference for over a hundred models – Piaggio, Vespa, Aprilia, Gilera, and Scarabeo from 2003 to date
• Replaces the old 841193 – this is the current code that replaces the discontinued reference

Technical specifications

Vehicle compatibility

The list is taken from the official Piaggio parts catalog (B2B area) and verified against the group's parts catalogs: the part number appears in table 01.18 "Oil pump" of 213 different catalogs. The years indicated are those in which the part is listed for that specific model. Before ordering, please check part number 82782R in your vehicle's catalog.

Who it is perfect for

This sprocket is for those who are rebuilding the timing system of a scooter with a Piaggio 4T engine — Beverly, Liberty, Fly, Medley, MP3, X-Evo, Vespa GTS, Aprilia Atlantic or Sport City, Gilera Nexus or Runner — and do not want to re-install a gear wheel already marked by the old chain. It is the classic part that costs little but, if reused while worn, causes the new chain to wear out quickly and makes the timing system noisy.

Frequently asked questions

Which vehicles does this sprocket fit?
On all scooters with Piaggio Leader and Quasar 4T engines from 125 to 400 cc: Piaggio Beverly, Carnaby, Fly, Liberty, Medley, MP3, Typhoon, X7, X8, X9, X-Evo, X10 and Mymoover; Vespa GT, GTS, GTV, LX, LXV, S, Sprint, Primavera and 946; Aprilia Atlantic, Mojito, Sport City, Scarabeo and SR GT; Gilera Nexus, Runner and Oregon.

Which part is it exactly: the one on the crankshaft or the one on the camshaft?
It is the one on the crankshaft, meaning the drive wheel that pulls the chain, and it is located behind the timing cover. The driven wheel on the camshaft is the timing gear, which in the catalog has a completely different part number and belongs to a different table.

Is the timing chain included in the price?
No: you only get the sprocket here. The chain is a separate item in the catalog and varies depending on the engine, so it must be ordered separately by specifying your model. It is always best to replace it together with the sprocket, because the two components wear out in pairs, and pairing a new one with an old one shortens the life of both.

My catalog shows part number 841193: is it the same part?
Yes. Part number 841193 is the old reference, which went out of production and was replaced by Piaggio with 82782R. In historical catalogs, the two items appear side-by-side in the same position. If your manual or mechanic indicates 841193, this is the correct part to order today.

How do I know if the sprocket needs to be replaced?
Look at the profile of the teeth: if they are thinned, with rounded tips, or have a visible ridge on the side, the sprocket has worn. Other signs include a noisy timing system when cold and a chain that, even with the chain tensioner at the end of its stroke, remains loose. In that case, the sprocket, chain, and guides must all be replaced.

Can I install it myself?
Not recommended unless you have the tools and manual. To reach it, you need to remove the timing cover and, upon reassembly, exactly reset the timing between the crankshaft and the camshaft: an error of even one tooth can damage the valves and piston. This is a job that should be entrusted to a workshop.