Drag Specialties Iridium Spark Plug (2103-0575)

Quality replacement parts are what keep a bike on the road. The Drag Specialties Iridium Spark Plug (2103-0575) is a Drag Specialties spark plug built to fit right and hold up to real-world riding.

Witchdoctors stocks genuine Drag Specialties parts by part number. Review the fitment and details below, and contact our team with any questions before you order.

Why Choose the Iridium Spark Plug

A strong spark is the foundation of smooth idle, crisp throttle response and easy starting. Worn plugs, aging wires or a weak coil cause misfires and hard starts. Drag Specialties ignition parts are direct replacements that restore a reliable spark.

Key Benefits

• Iridium-tipped spark plug
• Long life and strong, consistent spark
• Pre-gapped to factory spec
• Backed by Drag Specialties, a leading V-twin aftermarket brand
• Sold by Witchdoctors, Indian and Victory specialists

Features and Specifications

• Iridium-tipped spark plug
• Long life and strong, consistent spark
• Pre-gapped to factory spec

Product Details

• Brand: Drag Specialties
• Part number: 2103-0575
• Product type: spark plug

About Drag Specialties

Drag Specialties has supplied V-twin riders with replacement and performance parts for decades, from brake pads and ignition components to seats, mirrors and garage tools. Its catalog is built around fitment accuracy and value, which is why so many shops and riders rely on it. Witchdoctors carries Drag Specialties parts for Indian and Victory motorcycles so you can service and upgrade your bike with confidence.

Fitment and Compatibility

Fits (models and years):

• Indian Challenger and Pursuit 2020–2023

Fitment is model-specific. Confirm your model and year before ordering, and contact us if your bike isn’t listed.

Best Uses

• Fixing misfires and rough idle
• Routine tune-ups
• Restoring easy starting

Installation

1. Let the engine cool and disconnect the battery.
2. Replace one cylinder at a time so the routing and firing order stay correct.
3. Seat boots and connectors fully; use dielectric grease on boots.
4. Torque spark plugs to spec and route wires away from heat.
5. Reconnect the battery and test.

Follow your service manual for torque specs. If you’re not comfortable doing the work, have a qualified technician install it.

Pro Tip

Replace plugs and wires as a set during your spring tune-up. Inspect the old plugs: their color tells you a lot about how the engine is running.

How to Choose the Right Spark plug

Check your plug type, heat range and gap against your owner’s manual. Iridium plugs last longer and keep a strong spark as they wear; standard plugs are a cost-effective OEM-style replacement. Plug wires should be replaced when they show cracks, burns or high resistance. Always route wires exactly as the originals were routed, away from exhaust heat.

Troubleshooting Signs It’s Time to Replace

• Hard starting, especially when the engine is warm
• Misfires, popping or a rough idle
• Hesitation or stumbling under acceleration
• Worse fuel economy than usual
• Cracked, burned or corroded plug boots and wires
• Plugs with heavy carbon, oil fouling or worn electrodes

If you notice any of these, inspect the system and replace worn parts before your next ride.

Care and Maintenance

Inspect the part at every service, keep it clean, and replace it if it shows wear or damage.

Pair It With

• Drag Specialties Ignition Coil Black (2102-0330)
• Drag Specialties Spark Plug Wires Black 2008-20017 Victory (2104-0295)

Shop more ignition and charging parts, MSD ignition components, and batteries and electrical.

Helpful Guides From the Witchdoctors Blog

• Is Your Victory or Indian Motorcycle Hard Starting?
• Spring Tune-Up for Your Victory or Indian Motorcycle: Get Ready to Ride!
• Victory & Indian Motorcycle Maintenance Checklist

Frequently Asked Questions

Is it a direct fit?

Yes, for the models listed. Confirm your model and year before ordering.

Should I replace plugs and wires together?

It’s a good idea during a tune-up, especially on older bikes.

Is this a genuine Drag Specialties part?

Yes. Witchdoctors sells genuine Drag Specialties parts by part number.

Will it fit my bike?

Check the fitment section above. If your bike isn’t listed, contact us before ordering.

What if it doesn’t fit?

Contact our customer service team before installing anything, and we’ll help with fitment questions and returns under our return policy.

Where to Ride

Finish the job, then ride somewhere worth the trip:

• Natchez Trace Parkway (Mississippi, Alabama and Tennessee): 444 miles of history with no commercial traffic
• Moonshiner 28 and the Smoky Mountain Loops (western North Carolina): lakes, gorges and mountain curves near the Smokies

Order the Iridium Spark Plug Today

Add the Drag Specialties Iridium Spark Plug (2103-0575) to your cart, and Witchdoctors will ship it fast. Questions? Contact our team and we’ll help you choose.

Shipping

Qualifying Retail orders $159.99 or more will receive free ground shipping. Free Shipping Terms and conditions.

All orders over $500 will require a signature.

Please see International Shipping page for orders shipping outside the US.

See our full Shipping Policy page for further details.

Product Availability

We show real time product availability. These products normally ship the same business day but may ship from one of our warehouses across the country. If an item requires additional processing time you will be notified.

Returns

If your order arrives and it is not right, we will we'll fix it. We promise!

Doesn't fit or just not happy with it? You can return any new, unopened, unused or unaltered item within 30 days of delivery receipt of your item. We will issue a refund to your original payment method.

See our full Return Policy for all of the pertinent details.