EMPI Dual VW Carburetor Kit - 40 HPMX - Type 2 & 4 Engines - Bus 1972-1979

EMPI Dual VW Carburetor Kit - 40 HPMX - Type 2 & 4 Engines - Bus 1972-1979

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The EMPI 40HPMX Dual Carburetor Kit carburetors are test run as a pair, set for left and right sides, and they come with the float levels checked and set. The dual carb kits include aluminum hexbar linkage, chrome air cleaner assemblies, a coil relocation bracket and installation hardware. The dual carb kit will fit 1700-2000cc based, Type 2 and 4 engines. These engines were used in 1972 through 1979 VW Type 2 Bus models and 1970 through 1976 Porsche 914 engines. The HPMX Carburetors have a vacuum port so they can be used with vacuum advance distributors.

The EMPI Dual 40HPMX Dual Carburetor Kit includes:

  • Test run, pre-jetted, pre-set & paired 40HPMX Carbs
  • Aluminum Alloy Hex Bar Linkage with Steel Ball Ends
  • Sealed Aircraft Heim Rod Ends
  • Ball Burnished & Polished Aluminum Manifolds
  • Heavy Duty Steel Linkage Mounts
  • Chrome Air Cleaners Assemblies with High Flow Gauze Filters
  • Coil Relocation Mount
  • Brass Fuel Tee with Fuel Hose
  • Installation Hardware & Gaskets
  • Detailed & Illustrated Instructions

The EMPI Dual 40HPMX Carburetors come with the following jets and internal parts:

  • 52 Idle Jets
  • 130 Main Jets
  • 170 Air Correctors
  • 550 Ex. Pump Jets
  • 50 Accel Pump Jets
  • F11 Emulsion Tubes
  • 28mm Venturis

Parts for the Weber IDF carburetors are directly interchangeable with the EMPI HPMX carbs. We offer a full line of replacement idle jets, main jets, air jets, venturis, etc. so you can tune the carburetors as needed to suit your engine, click here.

What size carburetors do I need?

In general we use 40mm carburetors for engines up to 2000ccs. 44mm carbs are used for 2000cc and larger engines. Cams, heads, valve sizes and other factors will determine which carburetor set up works best. At the end of the day though, when in doubt, go larger as venturis and jets can all be changed to make a larger carb suit a smaller engine as needed.

May NOT fit under engine lid, trimming or clearancing may be required.

Why choose an EMPI HPMX carburetor over a Weber IDF?

Don't get us wrong, we're suckers for performance and when it comes to VW engines and performance carburetors, few will argue with the quality and performance that comes with the Weber name. That being said, there are better Weber versions than others with the Italian versions being the more preferred. So when EMPI decided to take on the task of reproducing one of the most popular VW performance carburetors they went to the best and made it better. They started with a 44 IDF carburetor as a base for the casting for both the 40HMPX and the 44HPMX carburetors. Some of the first improvements was updated circuitry and profiled throttle shafts to flow better right out of the box compared to the Weber. Now on their 4th generation, having made improvements along the way the HMPX carbs now feature a cast in enrichment plate block off and a vacuum port. So, why choose an HPMX Carburetor? Because it works just as well, if not better than a IDF carburetor, it's less expensive, and all the components, jets, gaskets and parts are all interchangeable with the IDF. Why pay more for less?!

California Prop 65 Warning: Cancer and Reproductive Harm
Please Note:The information listed below is for stock, unmodified VW's manufactured for sale in the US. VW's are commonly modified and very often parts from another year VW may have been installed on your car. California Pacific JBugs is not responsible for any errors if your car has been modified in any way.
VW Type II (Bus)
1972 - 1979
Single Cab
1972 - 1979
Double Cab
1972 - 1979


We offer FREE SHIPPING on orders over $100*

Orders under $100 cost a flat-rate, $11.95*
*Continental United States only.

Express Shipping

If you need express shipping, please call us for expedited shipping options. We will try to consolidate as much as possible to offer the lowest shipping rates.

Alaska, Hawaii, Puerto Rico, APO/FPO, & US Territories

For orders to Hawaii, Alaska, APO/FPO, Puerto Rico and other US territories, we will provide you with your shipping options and the costs via phone. The shipping costs for these orders are billed at the time of shipping.

International Shipping

We do not ship internationally. We only ship to the USA and it's territories.


90 Day Return Policy

You can return most unused, never installed, like-new items for 90 days from the date of receipt. Items must be in like-new condition.

The following items are final sale:

  • Special order items
  • Special order upholstery
  • Electrical items
  • Installed carburetors

For our full returns policy click here.
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