Mercury Medalist Parts & Accessories

Plan a Mercury Medalist axle or ignition order with Black Ops Auto Works. Review the listed Eaton Truetrac differential specifications and NGK WR5 spark-plug application with your car’s actual equipment. These components serve different jobs, so build the order around the work you have planned.

Eaton Truetrac Differential Choices

The listed Truetrac references distinguish a 28-spline rear 9-inch application from a 31-spline reference with a stated 3.25-and-up ratio restriction. Identify the installed axle and compare the full manufacturer application, shaft dimensions and carrier requirements before choosing either. A replacement axle needs its own specifications.

NGK WR5 Ignition Service

The NGK V-Power WR5 listing is a four-plug package. Confirm the actual engine application, required plug specification and total engine quantity before ordering. Use the engine’s service information for installation and gap requirements, including any changes made during a rebuild.

Choose Your Part

• Choose differential work or spark-plug service.
• Identify Medalist year, installed engine and rear axle.
• Match the complete part specification and required quantity.

Frequently Asked Questions

Which differential brand is listed?

Eaton Detroit Truetrac differential references are listed. Select by the installed axle and complete manufacturer application.

Are the 28-spline and 31-spline units interchangeable?

Do not assume so. Spline count, axle configuration, shaft dimensions and stated ratio restrictions must match the installation.

How many plugs are in the WR5 package?

The listed package contains four plugs. Determine the total quantity required for your engine.

Does the collection establish WR5 fitment?

No. Confirm the exact engine application and required plug specification before selecting it.

What details help with an inquiry?

Provide vehicle year, engine identification, axle specifications and the differential or plug reference you are considering.

Related Collections

Contact our team about Mercury Medalist differential or ignition applications.