Modern Vespa

Does anyone know why the water pump cover is plastic here in the USA. But the same part number is aluminum in Europe.

I found this out the hard way easing the little hose off the pump and the nipple broke.

So I ordered an aluminum cover from Germany for €29 versus almost $50 for plastic here.

Just wondering

The plastic one is an old version, the new one is metallic. Here's the correct part number for metallic one: B019381 (I know, looks irregular for Piaggio parts, but.)

Not sure for USA. Mine is one of the last 2022 HPE USA version and is plastic and the part number says 1A011109. Can't find a good picture to compare if both are exactly the same (1A011109 and B019381)

The aluminum one is a direct replacement? Make sense to change it as I do the coolant fluid change?

Not truly direct, and I dunno about HPE. I know that an old plastic version with "wire-like" gasket is directly replaced with metal one with flat gasket. But maybe there was also a plastic one with flat gasket.

So let me update my water pump update. So the part number that my both my covers have is 1019381. Other than a grove cut for a seal and material they are identical.

With no grove for the seal ring I bought, I used an industrial Anaerobic flange sealant that exceeded the temperature and pressure requirements of the scooter

It's together and water tight, Now I am just waiting for the snow to stop falling and I can ride my MP again.

Hopefully later in this week

Aluminum for the win. Plastic gets fragile and brittle with age/heat cycles. Plastic also distorts and warps.

Manufacturers are switching over to plastic just because it is cheaper to make but at the cost of durability.

BTW, the upper hose is not positioned correctly. It needs to almost touch the line cast into the cover.

not on the older types 500 the hose is to short

The newer ABS/ asr models got a longer hose

Iff the hpe comes with a plastc one in the US its a rebatched old stock one

Piaggio suplies the alluminium one from model year 2014 ABS/ASR models in Black and and silver color

So you say that I can change it for aluminum without problems in a HPE, exact match?

Did you know the part number for the black aluminum one? as all I can see is one part number but never a variation that indicate black or silver.

Thanks in advance

yes but buy also the gasket

Anyone know the part number for the black aluminum one? as all I can see is one part number (B019381) but never a variation that indicate black or silver.

Thanks in advance

1A011109 should be a black one 60 euro

B019381 is a silver one 31 euro

The problem is that the 1A011109 is plastic 😟

nope its a black alluimium one

Thanks, very appreciated