Industrial Distributor 4-Cyl Wisconsin

The PERTRONIX IGNITION Industrial Distributor 4-Cylinder Wisconsin (Model D41-09B) is a magnetic pickup distributor engineered for reliable ignition performance in industrial Wisconsin four-cylinder engines. This socket-style distributor combines proven Pertronix magnetic pickup technology with mechanical advance calibration, delivering consistent spark delivery across the RPM range without the wear and drift inherent in traditional point-and-condenser systems.

The magnetic pickup design eliminates point oxidation and contact wear, ensuring long service intervals between rebuilds. Mechanical advance weights respond directly to engine speed, progressively advancing ignition timing as RPM increases—critical for maintaining combustion efficiency across varying load conditions in stationary or mobile industrial applications. The black finish provides corrosion resistance suitable for farm, construction, and light industrial environments where distributors face exposure to moisture and temperature cycling.

This distributor is specified for Wisconsin four-cylinder engines commonly found in generators, pumps, compressors, and small industrial equipment. The socket-style cap interface ensures firm connection and simplified rotor replacement when maintenance is required. Operators and technicians value this distributor for its straightforward design, field repairability, and compatibility with original Wisconsin engine specifications without requiring electronic control modules or external sensors.

Pertronix has built reputation in the ignition aftermarket for delivering cost-effective magnetic systems that upgrade aging point-based engines while preserving mechanical simplicity. This D41-09B model maintains that standard—upgrading reliability without complicating serviceability in remote or field-service locations where electronic diagnostics may not be available.

Weighing 1.83 lbs and measuring 5.1 x 4.4 x 10.85 inches, the D41-09B installs as a direct bolt-in replacement for compatible Wisconsin engine blocks. Verify your engine model and cap configuration before ordering to ensure fit.