{"product_id":"empi-40mm-hpmx-dual-carburetor-kit-chrome-air-cleaners-hex-bar-linkage-vw-type-1-dual-port-47-7317-0","title":"EMPI 40mm HPMX Dual Carburetor Kit — Chrome Air Cleaners, Hex Bar Linkage | VW Beetle, Super Beetle, Ghia, Bus \u0026 Thing, Type 1 Dual-Port (47-7317-0)","description":"\u003ch2\u003e\u003cb\u003eEMPI 40mm HPMX Dual Carburetor Kit — Chrome Air Cleaners, Hex Bar Linkage (47-7317-0)\u003c\/b\u003e\u003c\/h2\u003e\n\u003cp\u003eA single stock carburetor is the biggest thing holding back a healthy dual-port Type 1 engine: long intake runners, uneven mixture between the cylinders, and a flat spot everywhere past the middle of the rev range. EMPI \u003cb\u003e47-7317-0\u003c\/b\u003e puts a \u003cb\u003e40mm HPMX carburetor on each head\u003c\/b\u003e, with short manifolds, a hex bar linkage and chrome air cleaners. It is the complete box for converting a dual-port Beetle, Super Beetle, Ghia, Thing or Type 1-engine Bus to dual carbs.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eKey Features \u0026amp; Benefits\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eMatched pair of 40 HPMX carbs:\u003c\/b\u003e test-run as a pair and set up for the left and right sides, with velocity stacks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHex bar linkage:\u003c\/b\u003e an aluminum alloy hex bar with steel ball ends and sealed aircraft heim rod ends for a flex-free throttle connection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAluminum intake manifolds:\u003c\/b\u003e ball-burnished\/polished manifolds, one per head, with brass manifold nuts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eChrome air cleaners:\u003c\/b\u003e solid aluminum base and top assemblies with high-flow gauze elements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eComplete kit:\u003c\/b\u003e fuel line with brass tee and filter, coil relocation mount, hardware and gaskets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eGenuine EMPI:\u003c\/b\u003e sold by an authorized EMPI dealer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eFitment\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003eThis kit fits \u003cb\u003eair-cooled VW upright Type 1 engines with dual-port cylinder heads\u003c\/b\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eCONFIRMED (EMPI, dual-port heads required):\u003c\/b\u003e VW Beetle 1950–1979, Super Beetle 1971–1980, Karmann Ghia 1970–1974, Thing 1973–1974, and Type 2 Bus and Pickup 1968–1974 with the 1.6L Type 1 engine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eNOT CONFIRMED:\u003c\/b\u003e single-port engines (they need dual-port heads first), 1975-on fuel-injected Beetles unless converted to carburetors, dune buggies and sand rails (not in EMPI's list, although they use the same engine), and cars with a stock fan shroud that the manifold offset does not clear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDOES NOT FIT:\u003c\/b\u003e Type 3 pancake engines, Type 4 engines (1972–1979 Bus 1.7–2.0L, 914) and Porsche engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eTechnical Specifications\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003ePart Number:\u003c\/b\u003e EMPI 47-7317-0\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCarburetors:\u003c\/b\u003e Dual 40mm EMPI HPMX, matched left\/right pair, with velocity stacks\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLinkage:\u003c\/b\u003e Aluminum alloy hex bar, steel ball ends, sealed heim rod ends\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eManifolds:\u003c\/b\u003e Ball-burnished\/polished aluminum, Type 1 dual-port\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAir Cleaners:\u003c\/b\u003e Chrome, solid aluminum base\/top, high-flow gauze elements\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAlso Included:\u003c\/b\u003e Fuel line, brass fuel tee, fuel filter, brass manifold nuts, coil relocation mount, hardware and gaskets\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eNot Included:\u003c\/b\u003e Fuel pump, pressure regulator, distributor, throttle cable, extra jets\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eUPC:\u003c\/b\u003e 707924278293\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCountry of Origin:\u003c\/b\u003e Taiwan\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eShipping Weight:\u003c\/b\u003e 20.95 lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePackage Dimensions:\u003c\/b\u003e 31 x 11 x 9 in\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eInstallation Notes\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eRead the job first:\u003c\/b\u003e EMPI's Type 1 dual HPMX\/IDF instruction sheet assumes a stock, healthy engine. The fuel and ignition come off first, then the old manifold, and the carbs and linkage are bench-assembled before they go on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTorque limits (EMPI sheet 99-4098-0):\u003c\/b\u003e case nut\/bolt 15 ft-lbs; throttle shaft nuts 4–5 ft-lbs maximum; carburetor hold-down nuts 12–14 ft-lbs maximum.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFuel pressure:\u003c\/b\u003e HPMX carbs want low, regulated fuel pressure. Fit a regulator if you run an electric pump.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBefore the first start:\u003c\/b\u003e check that the linkage moves freely through full travel and that plug wires are clear. Then synchronize the carbs with a Syncrometer and set idle mixture with a tachometer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eJetting:\u003c\/b\u003e plan on a jetting check for your displacement, cam, ignition and altitude. EMPI's baseline for 40 and 44 HPMX is a 130 main, 160 air corrector, 55 idle and F7 emulsion tube (sheet 99-4125-0).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eOfficial EMPI instruction sheets (PDF):\u003c\/b\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0278\/2760\/1523\/files\/empi-99-4098-0-type1-dual-hpmx-idf-kit-instructions.pdf?v=1789602422\" target=\"_blank\" rel=\"noopener\"\u003eType 1 dual HPMX\/IDF kit installation — 99-4098-0\u003c\/a\u003e · \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0278\/2760\/1523\/files\/empi-99-4100-0-carburetor-sync-and-idle-adjustment.pdf?v=1789602422\" target=\"_blank\" rel=\"noopener\"\u003eSynchronizing \u0026amp; idle mixture — 99-4100-0\u003c\/a\u003e · \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0278\/2760\/1523\/files\/empi-99-4125-0-40-44-hpmx-idf-tuning-instructions.pdf?v=1789602422\" target=\"_blank\" rel=\"noopener\"\u003e40 \u0026amp; 44 HPMX\/IDF tuning \u0026amp; jetting — 99-4125-0\u003c\/a\u003e · \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0278\/2760\/1523\/files\/empi-99-4332-0-carburetor-linkage-instructions.pdf?v=1789602423\" target=\"_blank\" rel=\"noopener\"\u003eLinkage assembly \u0026amp; lubrication — 99-4332-0\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eFrequently Asked Questions\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eDoes this fit a 1971 VW Super Beetle?\u003c\/b\u003e Yes, if the engine has dual-port heads, which every US Super Beetle had from the factory. EMPI lists 1971–1980 Super Beetles with dual-port heads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWill it fit my single-port engine?\u003c\/b\u003e No. The manifolds are for dual-port Type 1 heads. A single-port engine needs dual-port heads first.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWill it clear my stock fan shroud?\u003c\/b\u003e Not always. Dealers note that the manifold offset may need an aftermarket or 36hp-style fan shroud, or shroud modification. Check before you commit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDoes it fit a Type 3 or a Type 4 Bus?\u003c\/b\u003e No. It is for the upright Type 1 engine only. Type 3 pancake engines and the 1.7-2.0L Type 4 engine need different kits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e40mm or 44mm?\u003c\/b\u003e The 40mm HPMX suits most street engines from a stock 1600 up to mild big-bore builds. The 44mm (EMPI 47-7319-0) is for larger, higher-revving engines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eIs it jetted out of the box?\u003c\/b\u003e It ships jetted as a matched, test-run pair, but EMPI says no single jet set covers every engine, so plan on a jetting check. EMPI's tuning sheet 99-4125-0 gives the baseline.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWhat is not included?\u003c\/b\u003e Fuel pump, fuel pressure regulator, distributor, throttle cable and extra jets are not included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWhat is the part number?\u003c\/b\u003e EMPI 47-7317-0 (often listed as 47-7317). UPC 707924278293.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHow does it ship?\u003c\/b\u003e As a boxed parcel, about 21 lb in a 31 x 11 x 9 in carton, by ground service. It is not hazmat. It is set up as backorder-OK: if it is not on our shelf, we order it from EMPI and ship when it arrives.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAre you an authorized EMPI dealer?\u003c\/b\u003e Yes. Washburn's Metal is an authorized EMPI dealer, and this is a genuine EMPI part shipped in EMPI's packaging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cb\u003eExplore Related Categories\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003eCompare kits: \u003ca href=\"\/products\/empi-40mm-hpmx-dual-carburetor-kit-without-air-cleaners-type-1-dual-port\"\u003eEMPI 40mm HPMX kit without air cleaners (47-6317-0)\u003c\/a\u003e, \u003ca href=\"\/products\/empi-44mm-hpmx-dual-carburetor-kit-dual-port-fits-type-1-with-chrome-air-cleaners\"\u003eEMPI 44mm HPMX kit (47-7319-0)\u003c\/a\u003e, \u003ca href=\"\/products\/empi-deluxe-40mm-hpmx-dual-carburetor-kit-dual-port-fits-type-1-with-chrome-air-cleaners-and-offset-intake-manifold\"\u003eEMPI Deluxe 40mm offset-manifold kit (47-8317-0)\u003c\/a\u003e and \u003ca href=\"\/products\/empi-pro-sync-carburetor-synchronizer-dual-carb-tuning-tool-43-5718-0\"\u003ethe EMPI Pro-Sync synchronizer\u003c\/a\u003e. Browse \u003ca href=\"\/collections\/fuel-intake\"\u003eFuel \u0026amp; Intake\u003c\/a\u003e, \u003ca href=\"\/collections\/all-vw-aircooled\"\u003eAll Air-Cooled VW Parts\u003c\/a\u003e and the full \u003ca href=\"\/collections\/empi\"\u003eEMPI Parts\u003c\/a\u003e catalog.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eProp 65 Warning\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003e⚠ WARNING:\u003c\/b\u003e This product can expose you to chemicals which are known to the State of California to cause cancer and reproductive harm. For more information go to \u003ca href=\"https:\/\/www.P65Warnings.ca.gov\" rel=\"nofollow\"\u003ewww.P65Warnings.ca.gov\u003c\/a\u003e. All parts legal for use on pre-pollution controlled vehicles only.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"Product\", \"name\": \"EMPI 40mm HPMX Dual Carburetor Kit — Chrome Air Cleaners, Hex Bar Linkage | VW Beetle, Super Beetle, Ghia, Bus \u0026 Thing, Type 1 Dual-Port (47-7317-0)\", \"sku\": \"47-7317-0\", \"mpn\": \"47-7317-0\", \"gtin12\": \"707924278293\", \"brand\": {\"@type\": \"Brand\", \"name\": \"EMPI\"}, \"image\": [\"https:\/\/cdn.shopify.com\/s\/files\/1\/0278\/2760\/1523\/files\/47-7317-0.jpg?v=1789975061\"], \"description\": \"EMPI dual 40mm HPMX carburetor kit with chrome air cleaners, hex bar linkage and aluminum manifolds for air-cooled VW Type 1 engines with dual-port heads.\", \"offers\": {\"@type\": \"Offer\", \"url\": \"https:\/\/shop.washburnsmetal.com\/products\/empi-40mm-hpmx-dual-carburetor-kit-chrome-air-cleaners-hex-bar-linkage-vw-type-1-dual-port-47-7317-0\", \"priceCurrency\": \"USD\", \"price\": \"829.00\", \"itemCondition\": \"https:\/\/schema.org\/NewCondition\", \"seller\": {\"@type\": \"Organization\", \"name\": \"Washburn's Metal\"}}}\u003c\/script\u003e","brand":"EMPI","offers":[{"title":"Default Title","offer_id":48386598338675,"sku":"47-7317-0","price":829.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0278\/2760\/1523\/files\/47-7317-0.jpg?v=1789975061","url":"https:\/\/www.washburnsmetal.com\/products\/empi-40mm-hpmx-dual-carburetor-kit-chrome-air-cleaners-hex-bar-linkage-vw-type-1-dual-port-47-7317-0","provider":"Washburn's Metal","version":"1.0","type":"link"}