Description
Overview:
This Spark Plug Boot is a genuine Briggs & Stratton part designed to restore a safe, reliable connection between the ignition lead and the spark plug on small petrol engines. Moulded from durable, heat-resistant rubber, it insulates the high-tension connection and helps keep out moisture and debris that can cause misfires. The angled, low-profile design fits neatly under engine shrouds on compact equipment. It is a direct replacement for OEM part number 66538S and is suitable for popular Briggs & Stratton engines used on lawn and light construction machines, including Sprint 350 and Classic 450 models. Fitting is straightforward, making it a practical choice for routine servicing or repairs to keep garden and site equipment running smoothly and starting reliably.
Key Features:
- Genuine Briggs & Stratton OEM boot (part no. 66538S) for correct fit and performance
- Durable rubber construction resists heat, vibration, oil, and fuel splashes
- Angled profile for tidy routing and clearance under engine cowling
- Provides firm push-on connection and effective electrical insulation
- Helps prevent moisture ingress and contamination at the spark plug terminal
- Compatible with a range of Briggs & Stratton Classic and Sprint engines
- Quick, tool-free installation in most applications
- Suitable for regular maintenance and as a direct replacement part
Typical Applications:
Use on lawn mowers, scarifiers, rotavators, small generators, pressure washers, water pumps, and light construction equipment powered by compatible Briggs & Stratton engines. Ideal for resolving hard starting, intermittent misfires, or rough running caused by a perished or loose spark plug cap, and for preventive maintenance during seasonal servicing.
Also known as:
Spark plug cap, HT cap, HT boot, ignition cap, plug cover, spark plug connector cap. These terms refer to the insulated cap that fits over the spark plug terminal and connects to the high-tension ignition lead on small engines.
Fits Models:
Classic 350, Classic 375, Classic 450, Quattro 4.5, Quattro 40, Sprint 350, Sprint 375, Sprint 450
Alternate Part Numbers:
66538S, BS66538S
Product Specifications
L&S Part No. | BS66538S |
---|---|
Part Type | Genuine Part |
Manufacturer | Briggs & Stratton |
OEM No. | 66538S |
Unit of Sale | 1 |
Applications | Classic 350, Classic 375, Classic 450, Quattro 4.5, Quattro 40, Sprint 350, Sprint 375, Sprint 450 |
Machine Type | Engines |
Fits Brands | Briggs & Stratton |