Is there a way to determine if these are genuine Denso?

They have the brand marked in the porcelain and came in a denso pack. I have three years of usage in my toyota and runs like new

Do I need to use anti seize lubricant when I install Denso sparks plugs?

In the old days we always used anti seize on plugs going into aluminum heads. Apparently not anymore as a factory certified Toyota mechanic recently stated in a YouTube video that using antiseize is not recommended and can actually cause the plugs to seize up. I checked this out on the NGK site and they state that plugs are manufactured with a coating today to prevent seizing. Applying antiseize to these plugs reduces friction by 20% leading to overtightening and later to seizing. So no, don't use anti seize!

Ya vienen calibradas?

Estás bujías vienen calibradas,

Does this work fine for a 2003 celica gt? not gts one.

I am sure that these will work just fine for you. I have a 2001 Toyota Corolla and since yours has the same motor, they will work just fine. I did have to purchase a couple of coils but they may or may not be required for your peticular application. I do recomend these plugs. Great value and product for the price.

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DENSO # 3324 Iridium LONG LIFE Spark Plugs -- SK16R11 ----- 4 PCS NEW

Product ID: 15130287

Details

Brand
Denso
Core Material
Iridium
Thread Size
14mm
Top Material Type
Iridium
Vehicle Service Type
Car Truck

⚡Iridium core for superior ignition

🔥Long life durability

🔧Direct OEM replacement fit

$79.35

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Description

⚡ Ignite your drive with DENSO’s iridium edge!

COMPLETE 4 PACK - Get all four plugs you need in one package—ready to upgrade your ride instantly.
PERFECT OEM FIT - Seamlessly replace your spark plugs without hassle—engineered for exact vehicle compatibility.
TRUSTED QUALITY - Join over 700 satisfied customers rating 4.7 stars for reliable performance and peace of mind.
EXTENDED LONGEVITY - Drive longer between replacements thanks to enhanced durability and corrosion resistance.
PRECISION IRIDIUM CORE - Experience unmatched ignition efficiency and fuel economy with DENSO’s premium iridium technology.

The DENSO 3324 Iridium Long Life Spark Plugs (model SK16R11) come in a 4-pack and feature a high-performance iridium core for superior ignition and fuel efficiency. Designed as a direct OEM replacement, these plugs ensure perfect fitment for cars and trucks, backed by a strong 4.7-star rating from over 700 users. Engineered for durability, they offer extended service life and come with manufacturer warranty for reliable, long-term performance.

Specifications

ASIN	B00LVBZMFU
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#16,352 in Automotive ( See Top 100 in Automotive ) #82 in Automotive Replacement Spark Plugs
Brand	Denso
Brand Name	Denso
Compatible with Vehicle Type	Car, Truck
Core Material	Iridium
Customer Reviews	4.7 out of 5 stars 711 Reviews
Included Components	3324
Item Highlight	Replaces 4609 079 94859446 94859448 SP0RC12YC5 90080-91184 90919-01164 90919-01166 90919-01168 90919-01169 90919-01217.
Item Weight	1.44 ounces
Manufacturer	Denso Sales California, Inc.
Manufacturer Part Number	3324
Manufacturer Warranty Description	Includes manufacturer provided warranty
Model Number	SK16R11
Number of Items	1
OEM Equivalent Part Number	22401-40P65, 004 159 07 03, SP0RC12YC5, 22401-53J06, 101 905 631 F, 94859448, 90919-01164, 4609 079, 90919-01169, 90919-01217, 90919-01240, 90919-01168, SK16R11, 94859446, 90919-C1002
Thread Size	14mm
Top Material Type	Iridium
Unit Count	1 Count
Vehicle Service Type	Car, Truck

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$79.35

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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