JayCee Pilot Jet 75 | Weber IDA/IDF/HPMX Carburetors | VW Air-Cooled (JC-4428-0)

JayCee Pilot Jet 75 for Weber IDA/IDF/HPMX Carburetors

Dial in idle and low-speed fueling with an authentic JayCee Pilot Jet, a precision-machined slow/pilot jet for Weber IDA, IDF, and HPMX carburetors. This jet is size 75.

Vehicle Fitment

• VW Beetle: All years
• VW Bus: All years
• VW Karmann Ghia: All years

Key Features & Benefits

• Precision-Machined: Accurately sized slow/pilot jet for consistent idle and low-speed metering.
• Wide Carb Compatibility: Fits Weber IDA, IDF, and HPMX carburetors.

Technical Specifications

• Brand: JayCee
• Part Number: JC-4428-0
• Jet Size: 75
• Type: Slow / Pilot Jet
• Application: Weber IDA / IDF / HPMX carburetors

Frequently Asked Questions

• Which carburetors does this jet fit? It fits Weber IDA, IDF, and HPMX carburetors.
• What size is this pilot jet? This jet is size 75.

Material & Construction

This piece is machined from solid 6061-T6 billet aluminum stock rather than cast or stamped, which is why dual-carb and single-carb builders alike specify JayCee parts by name for Weber- and EMPI-based induction systems. The result is tighter tolerances at the carburetor interface and a part that seals and seats consistently, build after build.

Installation Notes

Dry-fit against your specific carburetor body before final assembly, and torque fasteners evenly in a criss-cross pattern to avoid warping the sealing surface. Because this is a fuel-system component, use a fuel-safe thread sealant or o-ring where called for, and re-check for leaks after the first heat cycle.

As an aftermarket upgrade rather than a reproduction of the stamped-steel factory piece, this JayCee part is built to outlast and outperform the OEM original while remaining a straightforward bolt-on for anyone comfortable with basic hand tools.

Every JayCee billet piece is CNC-cut to close tolerances and finished in-house, so what arrives is ready to bolt on without hand-fitting or secondary machining.

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