EMPI 44 HPMX Carburetor | 44mm IDF-Style Downdraft (Carb Only, Single-Carb Jetting)

EMPI's 44 HPMX 44mm carburetor jetted for single-carb installations — the largest HPMX-series carb available as a single-carb setup. It offers precise air and fuel metering with fully adjustable circuits, changeable jets and venturis, and an adjustable accelerator pump. Includes chrome velocity stacks. Tuned richer than the dual-setup version to handle single-carb fuel demand on big-bore Type 1 builds.

Vehicle Fitment

• VW Type 1 (dual-port): single-carb performance builds
• 1776cc–2110cc engines wanting a big single carburetor
• Off-road: sand rails and dune buggies running single-carb HPMX setups

Why Choose EMPI?

The HPMX series is EMPI's race-proven performance carburetor line, engineered for total tunability. The 44mm throat is the biggest single-barrel option in the lineup for hot-rodded stroker builds.

Key Features & Benefits

• Single-setup jetting (richer than the dual configuration)
• 44mm IDF-style downdraft design — biggest single-barrel option
• Chrome velocity stacks included
• Best for hot-rodded single-carb stroker builds
• Weber 44 IDF parts interchange

Technical Specifications

• Design: 44mm IDF-style downdraft
• Venturis: 30mm (larger than the dual-setup version)
• Factory jetting (single setup): Main 140 / Idle 60 / Air Correction 160 / Pump 50 / Ex. Pump 350 / E-Tube F-11
• Sold as: single carburetor (chrome velocity stacks included)
• Interchange: Weber 44 IDF
• Rebuild kits: 00-2362-0 or 00-9949-0 (Deluxe 43-5813-0)
• Part Number: 47-1012-2

Frequently Asked Questions

• Is this jetted for single or dual carb use? Single-carb — it is tuned richer than the dual-setup version.
• Will the jets and parts interchange with other carbs? Yes, parts interchange with the Weber 44 IDF.
• Are velocity stacks included? Yes — chrome velocity stacks are included.

Explore Related Categories

Building a performance top end? Browse our Fuel & Intake for carbs, manifolds, and linkage, our Engine catalog, and the full Air-Cooled VW collection.

WARNING: This product can expose you to chemicals including Lead which are known to the State of California to cause cancer and reproductive harm. For more information, go to www.P65Warnings.ca.gov. Wash hands following installation or before eating. All parts legal for use on pre-pollution controlled vehicles only.