{"product_id":"stihl-fuel-pump-4238-350-6201","title":"STIHL Fuel Pump - 4238 350 6201","description":"\u003cdiv\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDirect OEM replacement calibrated for 2-stroke carbureted platforms\u003c\/li\u003e\n\u003cli\u003eMaintains precise vacuum and positive-pressure cycles for consistent fuel metering\u003c\/li\u003e\n\u003cli\u003eConstructed with chemical-resistant elastomer diaphragms to resist degradation from ethanol-blended fuels\u003c\/li\u003e\n\u003cli\u003ePrecision-machined mounting rails align with original crankcase deck tolerances\u003c\/li\u003e\n\u003cli\u003eIntegrated impulse channel routing eliminates external leak paths and flash-back risks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cp\u003eThis unit functions as a factory-specification fuel transfer assembly engineered specifically for handheld 2-stroke power equipment. The internal impulse lines and rubber diaphragm geometry correspond exactly to the original casting specifications, maintaining calibrated vacuum and pressure cycles across standard operating temperatures. Material composition utilizes chemical-resistant elastomer for the pumping membrane alongside reinforced polymer housings to prevent case deformation under sustained vibration. All mounting interfaces, port geometries, and crankcase sealing surfaces are manufactured to match original deck specifications, eliminating the need for adapter plates or post-installation tuning.\u003c\/p\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDesigned for direct interchange on legacy and current platform configurations when retaining the original intake manifold and carburetor setup. Fits the following STIHL tool families:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eChainsaws: MS 170, MS 180, MS 181, MS 192, MS 194, MS 200, MS 201, MS 230, MS 250\u003c\/li\u003e\n\u003cli\u003eBrushcutters \u0026amp; String Trimmers: FS 38, FS 40, FS 50, FS 56, KM 55 R, KM 56\u003c\/li\u003e\n\u003cli\u003eHedge Trimmers: HL 36, HL 42, HL 46, HL 52, HL 56\u003c\/li\u003e\n\u003cli\u003eBackpack Blowers: BF 35, BG 35, B 55\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"STIHL","offers":[{"title":"Default Title","offer_id":58552659837309,"sku":"ST-4238 350 6201","price":8.92,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0565\/9190\/9056\/files\/4238_350_6201_1.webp?v=1787066547","url":"https:\/\/ripongroundcare.com\/products\/stihl-fuel-pump-4238-350-6201","provider":"Ripon Ground Care","version":"1.0","type":"link"}