Weber 40mm IDF Dual Carburetor Kit — Type 1 Dual Port, Chrome Air Cleaners | VW Beetle, Super Beetle, Ghia, Bus & Thing (43-7317-0)

Bolt-on dual-carb power for your Type 1. The Weber 40mm IDF Dual Carburetor Kit (43-7317-0) trades a tired single carb or a fussy stock setup for a matched pair of genuine Weber 40 IDF carburetors — the induction upgrade that wakes up a dual-port 1600 and keeps pulling on a built 1776 or 1835. Everything you need bolts on: aluminum manifolds, center-pull linkage, and chrome air cleaners, so you go from box to running without chasing down adapters.

Why builders reach for the 40 IDF

• Genuine Weber 40mm IDF carburetors — a dedicated carb feeding each pair of cylinders for crisp throttle response and even fueling, with the legendary IDF tunability: swap jets, not carbs, as your engine grows.
• Aluminum intake manifolds — correct runner length and a clean port match for Type 1 dual-port heads.
• Center-pull hex-bar linkage — smooth, synchronized throttle actuation that holds its sync once you set it.
• Chrome air cleaners with high-flow gauze elements — real filtration and a finished look under the deck lid.
• Complete hardware pack — fuel line, gaskets, and all mounting hardware included, so there's no second shopping list.

Fitment

Confirmed fit for dual-port Type 1 engines in:

• VW Beetle — 1971–1979
• VW Super Beetle — 1971–1980
• VW Karmann Ghia — 1971–1974
• VW Thing (Type 181) — 1973–1974
• VW Transporter Bus & Pickup (1.6L upright) — 1971–1974

This kit is built for dual-port cylinder heads. It is not for single-port heads, the Type 3 pancake engine, or the Type 4 engine — see our Type 3 and Type 2/4/914 kits for those platforms. Running a hotter cam or more displacement? The 40 IDF re-jets easily to match your combination.

Specifications

• Part number: 43-7317-0
• Carburetors: Genuine Weber 40mm IDF (matched pair)
• Configuration: Dual carburetor, dual port
• Air cleaners: Chrome housings with high-flow gauze elements
• In the box: Two Weber 40 IDF carburetors, aluminum intake manifolds, linkage, chrome air cleaners, fuel line, gaskets, and mounting hardware
• Shipping weight: 20.2 lb · Boxed: 31 × 11 × 9 in
• UPC: 707924221558

Common questions

• Will this fit my 1969 Beetle? The kit is designed for 1971–1979 dual-port Type 1 engines. Earlier 1600 dual-port engines can run it — just confirm your heads are dual-port before ordering.
• Is it genuine Weber or a copy? Genuine Weber 40 IDF carburetors, not an imitation.
• Do I need anything else to run it? The kit includes manifolds, linkage, air cleaners, fuel line, gaskets, and hardware. You supply fuel delivery — a low-pressure pump/regulator around 3–4 psi is recommended — and correct jetting for your build.
• What's the part number? 43-7317-0 (UPC 707924221558).
• Are you an authorized dealer? Yes — Washburn's Metal is an authorized EMPI dealer, and these are genuine Weber carburetors.

⚠ WARNING (California Proposition 65): This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov. Parts are legal for use on pre-pollution-controlled vehicles only.