Champion D21 Sparkplug

Champion D21 Sparkplug

The B1D21 Champion D21 Spark Plug is a reliable 18 mm spark plug designed for dependable ignition performance in a variety of engines and equipment. Built to Champion’s long-standing quality standards, it provides consistent spark delivery and efficient combustion, helping engines start easily and run smoothly. Suitable for multiple equipment applications, the D21 plug is widely used as a replacement spark plug across numerous cross-reference brands and models, making it a dependable option for maintenance and repairs.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: B1D21
• Primary Plug Number: Champion D21
• Product Type: Spark plug
• Thread Size: 18 mm
• Function: Provides ignition spark for gasoline engines
• Construction: Designed for consistent ignition performance and durability
• Compatibility: Used across multiple equipment and engine applications
• Cross Reference Replacements: NGK AB-2 / AB2, Delco A-C88, Bosch M10AC0, John Deere TY21726, TY6040, TY6076, Prestolite 18-10, Stens 130-575 and others

Ideal For

• Small engines and equipment requiring an 18 mm spark plug
• Agricultural and outdoor power equipment maintenance
• Replacement of worn or fouled spark plugs
• Routine engine tune-ups
• Situations where a fresh spark plug brings an engine back to life instead of leaving you pulling the starter rope all afternoon