AUTOLITE - XS4164 - Spark Plug - XS4164
The AUTOLITE XS4164 is an iridium-enhanced spark plug (model DPR7EIX) for 1986-2020 Harley-Davidson models (including Sportster 1100 XLH, Roadster EFI XLR, and Custom EFI XLC), featuring a .6 mm finewire center electrode with sport V-trim ground design that delivers up to 26% quicker starts and improved horsepower and fuel efficiency over standard plugs.
Features
- More focused ignition to prevent fouling than leading standard plug
- Iridium-enhanced .6 mm finewire design with Sport V-trim ground electrode engineered to offer improved ignitability and durability over a standard plug
- Up to 26% quicker starts than leading standard plug
- More horsepower and better fuel efficiency than standard plug
- Meets or exceeds OEM design
Specs
- Model: DPR7EIX
- Riding Style: Street
- Product Name: Spark Plug
- Type: Resistor
- Heat Range: 6
- Style: Iridium
- Electrode Tip Material: Iridium
- Ground Electrode Shape: Standard
- Center Electrode Projection: Projected
- Center Electrode Type: Fine Wire
- Terminal Configuration: Solid Terminal
- Units: Each
Frequently Asked Questions - AUTOLITE - XS4164 - Spark Plug - XS4164 - '86-'20 Harley-Davidson
How do I know if this part fits my vehicle?
Check the fitment information listed on this page against your exact year, make, model, and (where applicable) trim, engine size, or configuration. If your exact vehicle isn't listed, or you're not sure, use the product chat on this page or contact our support team before ordering - we're glad to help confirm fitment.
What does it mean if a product is listed as universal fit?
Universal fit means the product is designed to work across a range of vehicles, not that it's guaranteed to fit every one. Compare the listed measurements, mounting requirements, and connector or hardware specs against your specific vehicle before ordering, since some installations may need additional hardware or minor fabrication.
Where can I find installation instructions for this product?
General installation notes are provided above where available. For detailed step-by-step instructions, refer to the manufacturer's documentation included with the product, or use the product chat on this page for questions about difficulty, required tools, or whether professional installation is recommended.
What if I have more questions about this product?
Use the product chat on this page for fitment, specs, installation, and compatibility questions, or contact our support team directly for help before you order.
