NGK 91360 MR8BI-8 Laser Iridium Spark Plug Ski-Doo 900 ACE Expedition/Renegade

Vehicle Fitment

• 2015-2022 Ski-Doo Expedition LE ACE 900 (Base)
• 2015-2022 Ski-Doo Expedition SE ACE 900 (Base)
• 2015-2022 Ski-Doo Expedition Sport ACE 900 (Base)
• 2018-2022 Ski-Doo Expedition SWT ACE 900 (Base)
• 2015-2022 Ski-Doo Grand Touring LE ACE 900 (Base)
• 2017-2022 Ski-Doo Grand Touring SE ACE 900 (Base)
• 2019-2022 Ski-Doo Grand Touring Limited ACE 900 (Base)
• 2019-2022 Ski-Doo Grand Touring Sport ACE 900 (Base)
• 2019-2022 Ski-Doo Renegade Adrenaline ACE 900 (Base, Turbo)
• 2019-2022 Ski-Doo Renegade Enduro ACE 900 (Base, Turbo)
• 2021-2022 Ski-Doo Renegade X ACE 900 Turbo
• 2021-2022 Ski-Doo Renegade X-RS ACE 900 Turbo
• 2015-2022 Ski-Doo Skandic SWT ACE 900 (Base)
• 2015-2022 Ski-Doo Skandic WT ACE 900 (Base)
• 2021-2022 Ski-Doo Skandic LE ACE 900 (Base)
• 2021-2022 Ski-Doo Skandic SE ACE 900 (Base)

Fitment Notes

• This plug is specific to the Ski-Doo 900 ACE (Rotax 900 ACE) single-cylinder engine only - does not fit 600 ACE, 2-stroke, or Can-Am Spyder applications.
• NGK 91360 (MR8BI-8) is a Heat Range 8 (colder) plug. It shares the same 10mm thread and 19mm reach as the NGK 90982 (MR7BI-8) Heat Range 7, but is not interchangeable. Always confirm your engine's OEM specification before installing.
• Renegade Turbo variants confirmed fitment for 2021-2022 model years - verify for prior years.
• This is a powersports/snowmobile plug only - no automotive applications are associated with this part number.
• 1 plug per Ski-Doo model (single-cylinder engine). Sold individually (1x per unit).

Features

• Fine wire iridium center electrode (0.6mm tip) delivers consistent, high-energy spark with minimal voltage demand
• Taper-cut platinum ground electrode for even wear and stable gap maintenance across long service intervals
• Trivalent metal plating provides superior anti-corrosion and anti-seizing protection for easy removal in cold-weather environments
• High-grade pure alumina ceramic insulator with copper core for optimal heat dissipation under snowmobile operating conditions
• Triple seals and corrugated ribs prevent combustion leakage and eliminate flashover risk
• OE or OE-equivalent replacement - actual OE manufacturer for BRP Ski-Doo 900 ACE engine applications

Specifications

• Part Number: MR8BI-8 | Stock Number: 91360
• Center Electrode Tip: Iridium (Fine Wire, 0.6mm) | Ground Electrode Tip: Platinum (Taper Cut)
• Thread Diameter: 10.0mm | Thread Pitch: 1.0mm | Reach: 19.0mm (0.75 in)
• Hex Size: 16mm (5/8 in) | Seat Type: Flat (Gasket) | Heat Range: 8
• Pre-Set Gap: 0.031 in (0.8mm) | Resistance: 5,000 ohms | Terminal Type: Solid
• Torque - Cast Iron Head: 7.2-10.8 lb-ft | Aluminum Head: 7.2-8.7 lb-ft

Included Components

• 1x NGK MR8BI-8 Laser Iridium Spark Plug (Stock No. 91360), pre-gapped at 0.031 in

Product Description

The NGK 91360 (MR8BI-8) is a Laser Iridium spark plug engineered as the OE or OE-equivalent replacement for the Ski-Doo 900 ACE single-cylinder engine, covering the Expedition, Grand Touring, Renegade, and Skandic model lines from 2015 through 2022. The fine wire 0.6mm iridium center electrode and taper-cut platinum ground electrode are optimized for the sustained low-RPM, high-torque operating profile of the 900 ACE engine, delivering long service life and consistent cold-weather ignition performance.

This is a Heat Range 8 plug - one step colder than the NGK 90982 (MR7BI-8 / Heat Range 7) used on the Can-Am Spyder and Ski-Doo 600 ACE models. While both plugs share the same 10mm thread and 19mm reach, they are not interchangeable - always match the heat range to your engine's OEM specification. One plug per vehicle. Sold individually.