Mishimoto MMGH-F2D-98 Glow Plug Harness & Valve Cover Gasket Kit for 99-03 Ford

Vehicle Fitment

• 1999-2003 Ford F-250 Super Duty / F-350 Super Duty / F-450 / F-550 & Ford Excursion with 7.3 L PowerStroke V8 diesel

Features

• Direct-fit glow plug harness and valve cover gasket kit engineered for the 7.3 L PowerStroke engine.
• Includes integrated valve-cover gaskets with built-in glow-plug harnesses and pigtail connectors for correct routing.
• High-quality connectors, robust terminals and durable seals to withstand high heat and current loads from glow plugs.
• Restores cold-weather start performance by replacing deteriorated or melted factory wiring harness.
• Eliminates common failure point in high-mile, high-load diesel applications.
• OE-style fit and flex cable routing to maintain factory appearance and clearance.
• Includes replacement pigtail repair harnesses for damaged or melted connector back-ends.
• Backed by Mishimoto lifetime warranty for long-term reliability.

Specifications

• Part Number: MMGH-F2D-98
• Application: 7.3 L PowerStroke V8 diesel (Ford Super Duty / Excursion) 1999-2003 build years.
• Includes: 2 valve cover/gasket assemblies with integrated glow plug harnesses + 2 repair pigtail connectors.
• Warranty: Limited Lifetime by Mishimoto.

Included Components

• 1x Valve cover gasket with built-in glow plug harness (right bank)
• 1x Valve cover gasket with built-in glow plug harness (left bank)
• 2x Glow plug connector pigtail repair harnesses

Product Description

The Mishimoto MMGH-F2D-98 Glow Plug Harness & Valve Cover Gasket Kit is a comprehensive solution for the aging glow-plug wiring harness issues common on the 7.3 L PowerStroke V8 engine in 1999-2003 Ford Super Duty and Excursion trucks. Over time, the factory harness suffers from high amperage draw, elevated engine-bay temperatures, and repeated cycling which lead to brittle plastic connectors, short circuits and poor cold-start performance.

This kit replaces both bank valve cover assemblies with integrated new harnesses, along with repair pigtails to restore integrity to the glow-plug circuit and ensure reliable operation. Designed for direct drop-in installation, it retains factory routing, fitment and clearances while upgrading the electrical durability. Ideal for high-mile work trucks, heavy-duty towing rigs or diesel rebuilds where starting reliability and OEM-level fitment are critical.

Installation is straightforward for experienced diesel technicians - simply remove the factory valve covers, swap in the new gasket/harness assemblies, plug in the glow-plug connectors and any needed pigtails, then torque valve cover bolts to factory specification. With this harness kit installed, the engine regains consistent cold starts and avoids intermittent faults caused by worn or melted wiring.