DENSO Auto Parts Spark Plug P/N:5061
DENSO Auto Parts 5394 spark plug for the 1999-2007 Honda TRX400EX Sportrax and other vehicles fires the spark that ignites the fuel mixture in the cylinder.
A worn plug can show up as hard starting, a rough idle or a misfire, though ignition and fuel problems cause the same signs. With the engine off and cool, look at the electrode tip and insulator for wear or deposits before you replace the plug.
It fits the 1999-2007 Honda TRX400EX Sportrax, the 1996-2004 Honda XR400R and the 1991-1996 Honda XR250L, and each of those machines takes a single plug.
Fit and size
Build and materials
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This part cross-references / interchanges with the following part numbers:
Does the DENSO Auto Parts 5394 work as a spark plug for the 1996-2004 Honda XR400R?
Yes. DENSO Auto Parts 5394 is listed for the 1996-2004 Honda XR400R, and that machine takes a single plug.
What is the electrode material in this DENSO Auto Parts spark plug?
The center electrode is the 0.4mm iridium type, with an iridium tip and a copper core. The ground electrode has a nickel core.
What thread size and reach does the 5394 plug have?
DENSO Auto Parts 5394 has a 12 mm thread diameter, a 22 mm reach, an 18 mm hex and a flat seat. It comes pre-gapped at 0.7 mm.
How do I tell if the electrode on an iridium plug is worn?
With the engine off and cool, look for a rounded or worn-down electrode tip, heavy deposits or a cracked insulator. Hard starting, a rough idle or misfires can be early signs.
What heat range is the DENSO Auto Parts 5394?
The manufacturer heat range for the DENSO Auto Parts 5394 is 24. This plug also has a resistance of 5000 ohms.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.