NGK Spark Plug - #5958/10

NGK spark plug #5958 for V-twin motorcycles, engineered to fire consistently across the RPM range in Harley-Davidson and Indian engines. Genuine OEM-quality construction backed by NGK's reputation with two-wheelers worldwide.

Features

• NGK genuine spark plug
• Fits V-twin motorcycle engines
• Cross-references available for common part swaps

Specifications

• Brand: NGK
• Manufacturer Part #: 5958
• UPC: 087295159583
• Length: 2.9 in
• Width: 0.9 in
• Height: 0.5 in
• Weight: 0.05 lbs
• Country of Origin: Japan

Fitment

Fits V-twin motorcycles, including Harley-Davidson and Indian models.

Frequently Asked Questions

Will this spark plug fit my Harley or Indian?

Yes, this NGK plug is designed for V-twin engines found in Harley-Davidson and Indian motorcycles. Verify the part number matches your owner's manual.

Can I use ILKR8Q7 or BPR8ES in place of this plug?

ILKR8Q7 can substitute for ILKR8Q, and BPR8ES can substitute for BPR8ES-S. Confirm cross-reference compatibility with your bike's manual before swapping.

How often should I replace spark plugs?

NGK plugs typically last 10,000–15,000 miles depending on riding conditions and engine tuning. Check your owner's manual for the recommended service interval.

Is this an OEM plug?

NGK is an OEM supplier to major motorcycle manufacturers. This plug meets genuine specifications for V-twin engines.