Do you know if this spak plug is manufactured in Japan or in China ? Thank you !!

It says that it is made in Japan on the box and on spark plug as well.

Does this need anti-seize grease?

I always put a little bit of anti seize on spark plugs as they are almost always in aluminum heads. If the aluminum corrodes it ain't coming out.

It's a SC20HR11 code?

Yes, this is the aftermarket part number for the original Denso plug #SC20HR11Bruce

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⚡ Ignite your drive with precision and power!

ENHANCED DURABILITY - Platinum tipped ground electrode resists wear and corrosion, maintaining peak performance over time.
TRUSTED OEM QUALITY - Denso’s original equipment manufacturing standards guarantee perfect fit and reliable operation.
UNMATCHED LONGEVITY - Extra long life design means fewer replacements and more miles between maintenance.
LIGHTWEIGHT EFFICIENT - At just 0.28g, this spark plug minimizes engine load while maximizing fuel efficiency.
PRECISION IGNITION PERFORMANCE - 0.7mm fine wire iridium center electrode ensures faster, more efficient sparks for optimal engine power.

The Denso SC20HR11 spark plug features a 0.7mm fine wire iridium-tipped center electrode and a platinum-tipped ground electrode, delivering superior ignition performance and extended durability. Engineered for long life and OEM quality, it ensures reliable, efficient combustion and fewer replacements, making it the smart choice for professional-grade vehicle maintenance.

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Manufacturer	DENSO Europe B.V.
Brand	Denso
Model	IRD LONG LIFE SPK PLG
Batteries	Lithium Metal batteries required.
Item model number	3444
Manufacturer part number	3444
OEM Part Number	KF0120490B
Position	Centre
Item Weight	0.28 g

Denso SC20HR11 Spark Plug

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