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6409 Dual Weber 40 IDF Kit - Type-1

6409 Dual Weber 40 IDF Kit - Type-1
 
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Product Code: 6409


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Get the perfect balance of street drivability and performance with CB Performance’s Dual Weber 40mm IDF Carburetor Kit. Ideal for mild to moderate engine builds, this kit delivers smooth throttle response, reliable tuning, and increased horsepower β€” all in a package designed for everyday street use or spirited weekend driving.

The GENUINE Weber 40 IDF (Spain) is truly the mileage champ. 40 IDF carburetors are factory equipped with 28mm venturis that help provide a terrific combination of fuel economy and performance. Smaller 1600cc and 1776cc engines will benefit from the increased port velocity and enhanced engine torque produced by Weber 40 IDF carburetors.

Weber IDF kits fit neatly under the engine deck lid of VW sedans, buses, and square/notch backs. Top-quality USA-Made components including our 356 Aluminum Alloy Manifolds, Air Filter Assemblies and Porsche Style Cross Bar Linkage provide exact throttle control and maintain adjustments between service points. Kits are available to fit a variety of Dual Port VW and Porsche applications. See complete list of kit components below.


Not sure which size kit is best for your application – contact our sales team for expert advice before your purchase.


Key Features

  • GENUINE Weber IDF Carburetors – Manufactured in Spain – No cheap knockoffs here. Built for precision, reliability, trusted by VW enthusiasts worldwide.
  • Complete Installation Kit – Includes high-flow manifolds, hex-bar linkage, cleanable air filter assemblies, gaskets, fuel line, and all hardware needed for a trouble-free bolt-on install.
  • Optimized for Street Performance – Perfect match for stock to mild performance engines running dual-port heads.
  • Improved Airflow and Throttle Response – Crisp acceleration and smooth power delivery across the RPM range.

Note: Velocity Stacks are not included in 40 IDF Kits -
Available Separately.




Features
  • (1pr) 6401 40mm Genuine Weber IDF Carbs (Spain)
    (1pr) 3168 Type-1 Offset Manifolds (USA)
    (2) 2720 Intake Gaskets
    (4) 3363 8x12 Nuts (for Manifold Base)
    (4) 3331 8mm Wavy Washers (for Manifold Base)
    (2) 2700 Base Gaskets
    (1) 3118 8x8x8 Manifold Stud Kit
    (1) 3414 L.S. AC Base (USA)
    (1) 3413 R.S. AC Base (USA)
    (2) 2716 AC Gaskets
    (2) 3300 AC Tops (USA)
    (2) 3301 3-1/4" AC Elements
    (2) 3381 3-1/4" AC Hardware
    (2) 3360 Swivel Balls
    (2) 3371 8x13 Jam Nuts
    (1) 3356 21-1/8” Crossbar (USA)
    (2) 3364 Crossbar Centering Springs
    (2) 3400 Alum. Linkage Arms (USA)
    (1) 3403 Alum. Throttle Cable Arm (USA)
    (1) 3322 Throttle Barrel Clamp
    (2) 3406 DRLA Linkage Arms
    (2) 3348 L.H. Heim Joints
    (2) 3347 R.H. Heim Joints
    (1) 3395 1-1/8" Heim Joint Extension
    (1) 7221 6x10 Lock Nut
    (2) 3391 3-1/2" Threaded Rods
    (2) 3398 L.H. Jam Nuts
    (2) 3397 R.H. Jam Nuts
    (4) 3399 10x32 Lock Nuts
    (8) 7221 6x10 Lock Nuts (for AC Bases)
    (8) 7222 6mm Flat Washers (for AC Bases)
    (1) 3942 1/4" x 1/4" x 1/4" Brass Fuel β€œT”
    (1) 2773 5’ Fuel Line
    (6) 3805 Fuel Line Clamps

Accessory Parts
4851 Throttle Cable - Type-1 1966-1972 (111 721 555 E) 6537 Carburetor Flow Meter w/ Adapters 3184 See Through Fuel Filters 4852 Throttle Cable - Type-1 '73-on (111 721 555 J)
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Throttle Cable - Type-1 STE Carburetor Flow Meter See Through Fuel Filters Throttle Cable - Type-1 '73-on (111 721 555 J)
7557 Jet Doctor Kit - Weber IDF (one carb) RL14325 Throttle Cable Guide Roller for Crossbar Throttle Linkage 6393 Float Bowl Vent - Weber IDF Genuine Weber T-Shirt - Dark Heather Grey (specify size)
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Jet Doctor Kit - Weber IDF Cagero Throttle Cable Guide Roller Float Bowl Vent - Weber IDF Genuine Weber T-Shirt - Dark Heather Grey (specify size)

Average Customer Review: Average Customer Review: 4 of 5 4 of 5 Total Reviews: 1 Write a review.

  4 of 4 people found the following review helpful:
 
4 of 5 KIT September 13, 2018
Reviewer: RDM from Seekonk, Ma  
My review on kit #6409 in the description should mention it fits on stock oem fan shrouds and the coil needs to relocated. Also, it would be nice if one of the carburetors came with weblink kit.

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