NGK 92288 LMAR8AI-8 Laser Iridium Spark Plug for BMW K1600GT/GTL/B/Grand America

Vehicle Fitment

• 2011-2023 BMW K1600GT (Base, Sport)
• 2011-2023 BMW K1600GTL (Base, Exclusive)
• 2017-2021 BMW K1600B (Base)
• 2019 BMW K1600 Grand America (Base)

Fitment Notes

• OEM BMW cross-reference: 12 12 7 728 657 / 7 728 657
• 6 plugs required per motorcycle (inline six-cylinder engine)
• Fits all BMW K1600 series variants sharing the 1,649cc inline-six engine platform
• Plug is pre-gapped at 0.031"-0.032" (0.8mm); verify against your vehicle's service manual before installation
• No automotive fitment - motorcycle application only

Features

• Fine-wire laser-welded iridium center electrode for consistent, high-energy spark across all six cylinders
• Platinum-tipped ground electrode ensures even wear and long service life in modern distributorless ignition systems
• Trivalent metal shell plating delivers superior anti-corrosion and anti-seizing protection
• Pure alumina silicate ceramic insulator provides superior strength and efficient heat transfer
• 98% pure copper core aids in heat removal to prevent plug overheating under sustained high-rpm touring loads
• Triple seals prevent combustion gas leakage around the plug shell

Specifications

• NGK Part Number: LMAR8AI-8
• Thread Diameter: 10mm
• Thread Pitch: 1.0mm
• Reach: 26.5mm (1.04")
• Hex Size: 9/16" (14mm)
• Seat Type: Gasket
• Terminal Type: Solid
• Pre-Set Gap: 0.031"-0.032" (0.8mm)
• Center Electrode: Iridium Fine Wire
• Ground Electrode: Platinum Fine Wire
• Resistor Value: 5K Ohm
• Heat Range: 8
• Torque Spec - Cast Iron Head: 7.2-10.8 lb-ft
• Torque Spec - Aluminum Head: 7.2-8.7 lb-ft

Included Components

• 1x NGK LMAR8AI-8 Laser Iridium Spark Plug (92288)

Product Description

The NGK 92288 (LMAR8AI-8) is the OEM-specified Laser Iridium spark plug for the BMW K1600 inline-six touring motorcycle platform, covering the K1600GT, K1600GTL, K1600B, and K1600 Grand America from 2011 through 2023. A full set of six plugs is required per motorcycle. This plug is a direct OEM replacement matching BMW part number 12 12 7 728 657, requiring no modifications for installation.

Designed for BMW's high-revving 1,649cc six-cylinder engine, the fine-wire iridium center electrode and platinum-tipped ground electrode deliver stable ignition and extended service life - well suited to the sustained high-rpm demands of long-distance touring. BMW's recommended service interval is 18,000 miles, though many owners extend beyond that with these iridium plugs.