Denso FK16BR-AL8 Iridium Spark Plug operates within Toyota Aqua, Prius, and Vitz hybrid engines. A 0.4mm fine-wire center electrode initiates combustion using minimal voltage. With triple-ground electrodes, it stabilizes the spark during lean-burn cycles. Compared to the predecessor SK16R11, service life reaches 120,000 km and the ground design shifts from single to triple platinum.
Key Features
- Triple-Ground Electrode: Triple platinum construction for 120,000 km durability. Maintains stable ignition under high-compression hybrid cycles.
- 0.4mm Iridium Center: Fine-wire tip requires lower firing voltage. Reduces the workload on aging ignition coils.
- 14mm Thread Diameter: M14 sizing with 19mm reach and 16mm hex. Fits standard Toyota 1.5L and 1.8L hybrid blocks.
- 5 kOhm Resistor: Integrated internal resistor for electromagnetic interference suppression. Prevents electronic noise from disrupting vehicle sensors.
- 22 Nm Torque Spec: Specific installation tension for the 14mm thread. Stops cylinder head thread damage and compression leaks.
Frequently Asked Questions
Is FK16BR-AL8 suitable for Toyota Aqua?
This plug fits the 1NZ-FXE engine used in the Toyota Aqua and Prius. The 0.8mm factory gap aligns with hybrid powertrain ignition timing.
How long does Denso Iridium spark plug last?
The component operates for 120,000 km under normal driving conditions. Road dust and poor fuel quality might necessitate earlier inspection intervals.
