Husqvarna Grinder Engine Spark Plug 591268101 BPR4ES Ignition Part (Kawasaki HTC 800 XP Floor Concrete Surface Preparation Tune Up Replacement OEM)
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Husqvarna 591268101 BPR4ES Engine Spark Plug
The Husqvarna 591268101 BPR4ES engine spark plug delivers reliable ignition and efficient combustion for Kawasaki gasoline engines powering HTC 800 XP planetary floor grinders. Engineered with a durable copper core and corrosion-resistant nickel alloy electrode, this genuine OEM component ensures rapid starting and consistent flame propagation under high-load concrete surface prep conditions. Installing this factory replacement plug maintains engine horsepower, optimizes fuel economy, and protects against costly jobsite misfires.
Best Used For:
- Floor Grinder Engine Tune-Ups: Replacing fouled or worn spark plugs during scheduled 100-hour preventative maintenance cycles on HTC 800 XP machinery.
- Reliable Cold-Weather Starting: Providing dependable high-voltage spark delivery to eliminate hard starting on demanding commercial jobsites.
- Combustion Chamber Optimization: Preventing unburned fuel buildup, fouled exhaust valves, and power loss during continuous high-load concrete grinding operations.
Key Performance & Safety Features
- Genuine OEM Precision: Manufactured to exact Kawasaki and Husqvarna specifications for factory-correct heat range and electrical resistance.
- High-Conductivity Copper Core: Provides superior thermal dissipation to prevent pre-ignition and electrode overheating during extended runtime.
- Internal Monolithic Resistor: Suppresses electromagnetic interference (EMI) to safeguard onboard engine sensors and electronic digital controls.
- Corrosion-Resistant Zinc Shell: Resists thread seizing and galvanic corrosion within aluminum cylinder heads.
- High-Alumina Ceramic Insulator: Offers exceptional dielectric strength and thermal shock resistance against severe combustion pressure.
- Triple-Gasket Sealing System: Prevents combustion gas leakage around the plug thread body to maintain optimal cylinder compression.
What's Included
- (1) Husqvarna BPR4ES Engine Spark Plug – Part No. 591268101
Technical Specifications
| Brand | Husqvarna Construction |
| Part Number | 591268101 |
| Spark Plug Model | BPR4ES |
| Thread Diameter (Imperial / Metric) | 0.55 inches (14 mm) |
| Thread Reach (Imperial / Metric) | 0.75 inches (19 mm) |
| Hex Size (Imperial / Metric) | 13/16 inches (20.8 mm) |
| Electrode Material | Nickel Alloy Center and Ground Electrode with Copper Core |
| Insulator Type | High-Grade Alumina Silicate Ceramic |
| Resistor Value | 5k Ohm Monolithic Resistor (RFI Suppressed) |
| Equipment Compatibility | Husqvarna HTC 800 XP Planetary Floor Grinders |
| Engine Compatibility | Kawasaki Overhead Valve (OHV) Small Engines |
| OEM Status | Factory Genuine Husqvarna Part |
Pro-Tip: Always check and set the electrode gap using a dedicated wire feeler gauge to exact engine specifications (typically 0.028 to 0.031 inches) before threading the plug into an aluminum cylinder head.
