EMPI 40K Carburetor (Left) | VW Type 1 & 4 | Kadron-Style 40mm Side-Draft, Carb Only (43-4427-0)

EMPI 40K 40mm Carburetor (Left Side) — Kadron Style, Carb Only (43-4427-0)

Bring your air-cooled engine to life with the EMPI 40K Carburetor — a performance dual-carb setup inspired by the legendary Kadron Brosol/Solex design. Engineered for VW Type 1 and Type 4 engines, the 40K is ideal for street performance and mild off-road applications, offering simplicity, torque, and top-end power. This listing is for the LEFT-side carburetor only (sold individually) — you'll need both the left (43-4427-0) and right (43-4428-0) for a dual installation.

Vehicle Fitment

• VW Type 1 Beetle: 1600cc–2000cc dual-port performance builds
• VW Type 4 / Bus / Porsche 914 (with appropriate Type 4 manifolds)
• Karmann Ghia / Thing
• Sand rails, dune buggies, Cal-look builds

Why Choose EMPI?

The EMPI 40K brings the legendary Kadron Brosol/Solex design to a modern, affordable package. It shares the same internals as the Brosol/Solex 40mm, with side-draft simplicity that's easier to tune than an IDF.

Key Features & Benefits

• Left-side carb only: driver's side of the engine in the upright Type 1 layout
• 40mm Kadron/Brosol-style design
• Vintage road-tested performance: strong torque and throttle response
• Side-draft layout: simpler tuning than an IDF
• Same internals as the Brosol/Solex 40mm
• Carb only: manifold, linkage, and air cleaner sold separately

Technical Specifications

• Part Number: 43-4427-0
• Type: 40mm Kadron-style side-draft, single-barrel
• Factory Jetting: Main 1.30 / Idle .55 / Needle Valve 1.50 / E-Tube 1.50 / Venturi 28mm
• Rebuild Kits: 00-2301-0 or 00-9937-0; Deluxe 00-2507-0
• Right-Side Companion: 43-4428-0
• Sold As: Left-side carburetor only (pair with 43-4428-0 for a dual install)
• Shipping: ~4 lbs, box 8 x 7 x 7 in

Frequently Asked Questions

• Is this the complete dual-carb setup? No — this is the LEFT-side carburetor only, sold individually. You need both the left (43-4427-0) and right (43-4428-0) for a dual installation.
• What design is the 40K based on? It is a 40mm Kadron/Brosol-style side-draft carb with the same internals as the Brosol/Solex 40mm.
• What is it best suited for? VW Type 1 and Type 4 engines for street performance and mild off-road use — strong torque and throttle response with simpler tuning than an IDF.

Explore Related Categories

Fuel & Intake, All VW Air-Cooled, EMPI

WARNING: 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 www.P65Warnings.ca.gov. All parts legal for use on pre-pollution controlled vehicles only.