Spark plug ngk dcpr6e – code: 47.558.48 – Osculati

NGK DCPR6E Osculati spark plug (code 47.558.48)

The NGK DCPR6E spark plug offered by Osculati (supplier code 47.558.48) is a spare part dedicated to engine maintenance, designed for those who want to properly restore ignition according to the manufacturer's instructions. In the nautical field and in the management of outboard motors, the spark plug is an essential component: a replacement performed with the correct model helps maintain smooth operation and reduce typical problems related to wear, deposits, or difficult starts.

This spark plug is factory-installed on several engine brands, including Mariner, Yamaha, Suzuki, Mercury, Tohatsu, Selva and Honda. For a safe choice, it is always advisable to check the spark plug code required by the engine manual or the spark plug already installed.

Product features and details

Identification and codes

• Spark plug model: NGK DCPR6E
• Supplier: Osculati S.r.l.
• Supplier product code: 47.558.48

Factory installation (useful information for compatibility)

According to available information, this spark plug is indicated as factory-installed on engines of the following brands:

• Mariner
• Yamaha
• Suzuki
• Mercury
• Tohatsu
• Selva
• Honda

Note: the presence of the brand does not automatically imply compatibility with every model or year. Verification must be done on the spark plug code required by the manufacturer or the reference shown on the existing spark plug.

Equivalent (cross-reference)

In the available material, there is a Champion equivalent associated with this model:

• Champion RA8HC

Equivalents are useful as a guide during replacement, but it is good practice to always confirm the exact equivalence based on the engine specifications.

Typical applications in the nautical field

The NGK DCPR6E spark plug is a spare commonly used in the maintenance of engines employed in contexts where reliability and smooth operation are important, such as:

• Routine maintenance of outboard motors and compatible marine engines
• Scheduled replacement during seasonal checks (pre/post storage)
• Restoration interventions in case of worn or fouled spark plug
• Onboard spare to keep available for quick interventions

In general, replacement with a correct and code-identifiable model helps maintain the configuration intended by the engine manufacturer.

Advantages for installers and boaters

• Precisely identifiable spare part thanks to the NGK DCPR6E model and Osculati code 47.558.48
• Standard mounting indication on several popular brands in the sector (useful as an initial reference)
• Maintenance support with a component subject to normal wear and therefore typically planned in control schedules
• Simplified spare parts warehouse management for workshops and operators working on multiple engine types

For a result consistent with the engine's needs, it is essential to avoid “intuitive” replacements and rely on correct codes and references.

Usage and operational notes

Checks before purchase

• Check that your engine requires the model DCPR6E (manual, maintenance label or removed spark plug).
• If you are using a spark plug from another brand, you can use the Champion RA8HC equivalent as a guideline reference.
• In case of doubts between similar variants, it is preferable to adhere to the exact code indicated by the manufacturer.

General replacement guidelines

Spark plug replacement is part of regular maintenance. In the absence of specific instructions reported here, always follow the engine manufacturer's procedures (tools, tightening torques, checks, and settings). After installation, it is good practice to verify that the engine runs properly and that there are no obvious anomalies.

Practical maintenance tips

• Work with a cold engine and safely, avoiding contamination in the spark plug well area.
• Inspect the removed spark plug: its appearance can provide useful indications about the general condition (deposits, wear, any abnormal traces).
• If the problem persists after replacement, consider a broader check of the ignition system and fuel supply according to the manual.

FAQ – Frequently Asked Questions

Is this spark plug compatible with all Yamaha or Mercury engines?

No. It is indicated as factory-installed on several brands (including Yamaha and Mercury), but compatibility depends on the engine model and year. Always check the spark plug code required by the manufacturer or the one shown on the currently installed spark plug.

What is the Osculati code for the NGK DCPR6E spark plug?

The Osculati supplier product code is 47.558.48.

Is there a Champion equivalent for the NGK DCPR6E?

Yes, the available data shows the Champion equivalent RA8HC as a cross-reference.

On which brands is it indicated as a factory-installed spark plug?

It is indicated as factory-installed on Mariner, Yamaha, Suzuki, Mercury, Tohatsu, Selva, and Honda. Verification should still be done on the individual engine model.

Can I use this spark plug as an onboard spare?

Yes, it is a component typically subject to maintenance and can be useful as an onboard spare, provided it is the correct model for your engine (DCPR6E) according to the manual or existing spark plug.