Equivalents for the Japan Parts spark plug B103
Japan Parts B103, a spark plug featuring heat range hot, reach 15.2–19.0 mm. Compare its 174 equivalents and find the cheapest compatible plug: NGK, Bosch, Champion, Denso and more.
Technical information Japan Parts B103 spark plug
- Resistor
- no
Buy this spark plug Japan Parts B103 — best retailers
Partner links: a purchase made through these links may earn us a commission, at no extra cost to you.
What can replace a Japan Parts B103 spark plug?
The Japan Parts B103 is interchangeable with: Bosch CH171, Champion W566, Denso G005, Bosch CH184, Bosch CH271, Bosch GLP003. These spark plugs share the same mounting (thread, seat) and heat range.
What are the specifications of the Japan Parts B103?
Reach 15.2–19.0 mm, Heat range Hot, Resistor no, Seat Flat (gasket)
Cross-references and specifications are provided for guidance only. The wrench size can vary by brand, and some data is inferred from the plug code or an equivalent reference. Always check the vehicle manufacturer's recommendation before buying and fitting.