Please Note: There are two types of this C3-EL18B carburetor, it is divided into single tube carburetor and double tube carburetor. Our carburetor in this listing is a SINGLE tube carburetor.There is no tubing interface at the lower right of the carburetor, it is no offer external primer bulb. Replace part number for 503281614, 503283208 Carburetor for 340 340E 340EPA 345 345E 345EPA 346XP 346EPA 350 350EPA 351 353 351EPA I 353EPA chainsaw Replace for C3-EL18B, Also fit for Jonsered 2150, 2152, 2145 models Type: Single Tube Carburetor Fitment Type: Direct Install Material: metal+plastic colour: black+silver Package Contents: 1 x Carburetor 1 x Air Filter 1 x Intake Manifold 1 x Intake Knuckle 1 x Rod 1 x Throttle Rod 1 x Fuel Hose 1 x Fuel Filter 1 x Spark Plug Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.