Standard Ignition FH58 Circuit Breaker

OE-Style 250 Amp Circuit Breaker

Standard Ignition FH58 is a direct-fit circuit breaker built for OE replacement applications that require a 250 amp rating and a plug-in electrical connection. It is designed for proper fit, form, and function, making it a practical choice for restoring reliable circuit protection in supported Buick, Cadillac, Chevrolet, and GMC vehicles.

With a female, square, two-connector plug-in design, FH58 is built for straightforward replacement in vehicles such as the Chevrolet Silverado 1500, Chevrolet Traverse, and GMC Sierra 1500. The Standard Ignition FH58 part number is also referenced in OE-style service searches for late-model GM electrical repair.

Key Features

• 250 amp circuit breaker for high-current electrical protection
• Direct-fit OE replacement for proper fit, form, and function
• Female connector gender with square plug-in design
• Two-connector configuration for specified GM applications
• Manufactured in TS16949 and ISO9001 certified facilities
• Built with materials intended to withstand demanding operating conditions

Detailed Description

Standard Ignition FH58 is engineered as an OE replacement circuit breaker for select GM vehicles across the 2014-2022 model years. It supports applications including the Buick Enclave, Cadillac Escalade, Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, Chevrolet Tahoe, GMC Sierra 2500 HD, GMC Sierra 3500 HD, GMC Yukon, and GMC Yukon XL. The FH58 part number is also used in searches for Chevrolet Cruze, Buick Encore, and Cadillac CTS electrical service.

This part cross-references Monroe Shocks & Struts (e.g., 84082850, FH167) for the same application.

What It Helps Address

• Intermittent loss of electrical circuit protection
• Failed or weakened high-amperage breaker performance
• Replacement needs after heat-related electrical wear
• Service repairs on GM electrical power distribution systems
• Fitment issues caused by non-OE-style replacement parts

Installation Notes and Tips

Verify the vehicle’s original breaker style, connector shape, and amperage rating before installation. FH58 uses a female, square, plug-in connection, so matching the connector layout is important for correct installation. Confirm application details for your specific Buick, Cadillac, Chevrolet, or GMC model before ordering, especially on vehicles with multiple electrical configurations.

Quality Assurance

Standard Ignition manufactures this circuit breaker in TS16949 and ISO9001 certified facilities and maintains quality control from component selection through final production. That process supports consistent OE-style replacement performance for supported applications.