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NGK CPR6EA-9 Spark Plug – Fits Suzuki Outboard 4–30 HP (Replaces 09482-00L04)

Sale price $9.99 Regular price $15.00
Shipping calculated at checkout.

NGK CPR6EA-9 Spark Plug – Fits Suzuki Outboard 4–30 HP (Replaces 09482-00L04) is backordered and will ship as soon as it is back in stock.


Worry-free returns

You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Delivery and Shipping

Free standard shipping on all orders under 1 KG

If you have any questions, feel free to email us at info@sierramarines.com, and we’ll get back to you within 20–36 hours.

Product Details

This NGK CPR6EA-9 Spark Plug is a direct-fit replacement for Suzuki Outboard 4-stroke engines from 4 to 30 HP (model years 2003 and newer). It is designed for reliable ignition and performance in models including the DF4, DF6, DF9.9, DF15, DF20A, DF25A, and DF30A series.

It serves as a direct replacement for Suzuki part number 09482-00L04 and NGK stock number 6899.

  • Engineered as a direct replacement for easy installation.
  • Features a high-conductivity copper core for consistent performance.
  • Comes pre-gapped to 0.9 mm (0.035 in) for out-of-the-box convenience.

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket brands.

Brand Part Number
Suzuki 09482-00L04
NGK CPR6EA-9
NGK 6899

Engine & Model Compatibility

Confirm your engine model/year in the table below.

This spark plug is designed for the following Suzuki outboard models.

Brand Model Rated HP Stroke Years OEM Part No. Notes
Suzuki DF4 4 4-Stroke 2003 and newer (S/N 110001+) 09482-00L04
Suzuki DF6 6 4-Stroke 2003 and newer (S/N 110001+) 09482-00L04
Suzuki DF9.9 9.9 4-Stroke 2003 and newer (S/N 110001+) 09482-00L04
Suzuki DF9.9B 9.9 4-Stroke All model years 09482-00L04
Suzuki DF15 15 4-Stroke 2003 and newer (S/N 110001+) 09482-00L04
Suzuki DF15A 15 4-Stroke All model years 09482-00L04
Suzuki DF20A 20 4-Stroke All model years 09482-00L04
Suzuki DF25A 25 4-Stroke All model years 09482-00L04
Suzuki DF30A 30 4-Stroke All model years 09482-00L04

Technical Specs

Product Type
Spark Plug
Installation
Direct Replacement
Fuel Type
Gasoline
Core Material
Copper
Housing Material
Metal
Housing Color
Silver/Metal
Gap Setting
0.9 mm (0.035 in)
Heat Range
6
Thread Size
04
Dimensions
Length: 80 mm (8.0 cm), Width: 20 mm (2.0 cm), Height: 20 mm (2.0 cm)
Weight
0.03 kg (1.12 oz)

What’s in the Box

  • 1 x NGK CPR6EA-9 Spark Plug (09482-00L04)

Installation Notes

  1. Ensure the engine is cool and disconnect the battery.
  2. Clean the area around the spark plug to prevent debris from entering the cylinder.
  3. Carefully disconnect the spark plug wire/boot.
  4. Using a spark plug socket, remove the old plug.
  5. Verify the gap on the new spark plug matches the engine manufacturer's specification.
  6. Install the new plug by hand to avoid cross-threading.
  7. Use a torque wrench to tighten the spark plug to the specification in your service manual.
  8. Reconnect the spark plug wire/boot securely.

Troubleshooting & FAQ

How do I know if this spark plug fits my engine?

This plug is designed primarily for Suzuki 4-stroke outboards from 4 to 30 HP. The best way to confirm fitment is to check your engine's model number, serial number, and year against the compatibility chart above. You can also cross-reference your existing spark plug's part number.

What is the correct gap setting?

This plug comes with a pre-set gap of 0.9 mm (0.035 in). While this is correct for most listed applications, it is always best practice to verify the gap and adjust if necessary to match your engine's specific requirements as noted in your owner's manual.

What are the signs of a failing spark plug?

Common symptoms include difficulty starting the engine, rough idling, engine misfires, reduced acceleration and power, and decreased fuel efficiency. Visual inspection may reveal a fouled, corroded, or damaged electrode.

When should I replace my spark plugs?

Replacement intervals vary by engine model and usage. Refer to your outboard's service manual for the recommended schedule. Plugs should be replaced sooner if they show signs of wear, fouling, or damage.

Is this spark plug for 2-stroke or 4-stroke engines?

This NGK CPR6EA-9 spark plug is specifically designed for use in 4-stroke engines as listed in the compatibility table.

Do I need to apply anti-seize compound to the threads?

NGK recommends against using anti-seize on他们的 modern spark plugs. They feature a special trivalent plating that provides its own anti-seize and anti-corrosion properties, and using additional compound can lead to over-torquing.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). It has been built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, it is batch-inspected for consistency.

Shipping speed & cost?

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

Warranty & returns?

Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.

Safety & Important Info

  • Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
  • This is an aftermarket replacement, not an OEM component.
  • Professional installation is recommended for safety and performance.

About Sea Sierra

  • Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
  • Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
  • Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.

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