Dellorto phm AS1 Ø40mm Carburetor

DELL ORTO offers this carburettor. The carburettor sits between the air filter and the engine and prepares the air-fuel mixture the engine will burn.

Why change the carburettor?

The benefits:

• Replace a carburettor that is worn, cracked or impossible to set up, rather than repairing it again and again.
• As part of an engine build, a bigger or more modern carburettor improves filling and throttle response.
• A new, complete unit: body, slide, jets and needle already fitted.

Why choose DELL ORTO?

Dellorto started out in Italy in 1933 making motorcycle carburettors and still produces in Cabiate, Lombardy; the brand has been in MotoGP since 2012 and was the exclusive ECU supplier to the Moto3 class until 2025.

When should you replace this part?

A cracked body, a slide with play in its bore, damaged threads or carburation that cannot be stabilised despite a full clean: the carburettor needs replacing.

Specifications and fitting tips

• 601 Slide
• K4 Needle
• Manufacturer part number: 4809

Cross-Mania tip: Check the diameter of the inlet manifold and the airbox connection, the type of throttle cable and the routing of the vent hoses, then fine-tune the setting (jets, needle, mixture screw) with the engine warm, starting from the setting supplied.

Compatibility

Universal part: check the dimensions given before ordering.