Description

Champion Industrial & Agricultural Spark Plug

Part No: 543, D89D

Condition: New

Champion D89D spark plug, stock number 543, for compatible industrial and agricultural engines. Features nickel electrode tips, a non-resistor design, an 18 mm threaded shell and a flat sealing seat. A replacement option for equipment specifically calling for Champion D89D.

Includes one spark plug with its individual box. The larger eight-plug carton pictured is for product reference only. Confirm the engine’s specified plug number, thread reach and gap before installation.

Fitment / application

Champion’s application catalogs list D89D for:

• Equipment powered by International Harvester UD-6, UD-6A, UD-9 and UD-9A engines. 
• Consolidated D615 and D925 lighting-plant / generator applications. 

These catalog entries specify a 0.025-inch gap.

Compatibility note: Match the exact engine specification. D89D and W89D are different plugs, and an 18 mm thread alone does not establish compatibility.

Specifications

• Brand: Champion
• Series: Industrial / Agricultural
• Stock number: 543
• Plug model: D89D
• Center electrode tip: Nickel
• Ground electrode tip: Nickel
• Ground electrodes: One
• Resistor: No
• Champion heat range: 89
• Thread size: M18 × 1.5
• Thread reach: 12.7 mm / ½ inch
• Hex size: 22.23 mm / ⅞ inch
• Seat: Flat
• Nominal preset gap: 0.025 inch / approximately 0.64–0.65 mm
• UPC: 037551002955
• Quantity: One plug.