Equivalents for the Hirih spark plug H18U4C
The Hirih H18U4C spark plug with reach 12.7 mm, heat range very hot, thread 18 mm, tightening torque fonte 35–45 N·m · alu 35–40 N·m — ou 180°–240° (½–⅔ tour). 245 equivalents listed: interchangeable and compatible spark plugs across all brands — NGK, Bosch, Champion, Denso…
Technical information Hirih H18U4C spark plug
- Resistor
- no
- Torque
- fonte 35–45 N·m · alu 35–40 N·m — ou 180°–240° (½–⅔ tour)
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What can replace a Hirih H18U4C spark plug?
The Hirih H18U4C is interchangeable with: Bosch M5A, Champion D6, Denso M14, Bosch M8A, Bosch M10A, Bosch M4A2. These spark plugs share the same mounting (thread, seat) and heat range.
What are the specifications of the Hirih H18U4C?
Thread 18 mm, Reach 12.7 mm, Heat range Very hot, Resistor no, Seat Flat (gasket), Torque fonte 35–45 N·m · alu 35–40 N·m — ou 180°–240° (½–⅔ tour)
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.