Spark plug · Bosch

Equivalents for the Bosch spark plug FR8HP4

The Bosch FR8HP4 spark plug with reach 18.5–21.5 mm, tightening torque fonte 25–35 N·m · alu 25–30 N·m — ou 180°–240° (½–⅔ tour), hex size 13/16″ (20,8 mm), electrode platinum, thread 14 mm, heat range medium. 17 equivalents listed: interchangeable and compatible spark plugs across all brands — NGK, Bosch, Champion, Denso…

Technical information Bosch FR8HP4 spark plug

Resistor
yes
Ground electrodes
1
Torque
fonte 25–35 N·m · alu 25–30 N·m — ou 180°–240° (½–⅔ tour)

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What can replace a Bosch FR8HP4 spark plug?

The Bosch FR8HP4 is interchangeable with: Bosch FR8HP, Denso IT20, Autolite AP985, Bosch FR9HP, Bosch FR9HPV, Denso PT20TT. These spark plugs share the same mounting (thread, seat) and heat range.

What are the specifications of the Bosch FR8HP4?

Spark plug wrench 13/16″ (20,8 mm), Thread 14 mm, Reach 18.5–21.5 mm, Heat range Medium, Electrode Platinum, Resistor yes, Seat Flat (gasket), Ground electrodes 1, Torque fonte 25–35 N·m · alu 25–30 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.