{"product_id":"tillotson-hw33a-inlet-needle-seat-set","title":"(27) Tillotson HW-33A Inlet Needle \u0026 Seat Set","description":"\u003cp\u003eThe \u003cstrong\u003eTillotson HW-33A inlet needle and seat set\u003c\/strong\u003e is the precision valve assembly that controls fuel flow into the carburetor metering chamber. The needle sits in the seat and is lifted by the inlet control lever to allow fuel in when demanded. When the metering chamber is full, the needle re-seats to shut off fuel flow. This on\/off cycling happens continuously at high frequency during engine operation.\u003c\/p\u003e\n\u003cp\u003eThe needle tip and seat bore are precision-matched surfaces. Wear, debris damage, or corrosion at the needle-seat interface causes flooding, inconsistent fuel levels, or inability to maintain mixture. This is one of the most critical replacement items during a carb rebuild. Always replace the needle and seat as a matched set — never mix old and new components.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Matched inlet needle and seat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 set\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf your carb is flooding or fuel levels are inconsistent, the needle and seat are the first place to look. Available at CMC Karting.\u003c\/p\u003e","brand":"IAME USA","offers":[{"title":"Default Title","offer_id":47883285823709,"sku":"TI-233-721P","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/files\/CMCKA10027TILLOTTSONCARBURETORHW33A.png?v=1778166806","url":"https:\/\/cmckarting.com\/products\/tillotson-hw33a-inlet-needle-seat-set","provider":"CMC Karting","version":"1.0","type":"link"}