Is this a 12 mm or 14 mm spark plug I need this information for the gapping tool

Neither!! You need to gap them properly yourself, so get a “gapping tool” if you plan to use them properly. They take a little work, but they are OUTSTANDING! I have them in my Stage 2 GTI that makes damn near 350hp from a 4 cylinder... They do the job! Just use them with care! #NotForTheLevelOneTech

are these pre gapped at.44?

Can't remember the gap mine came at but as a general rule you should never trust the factory gapping. Get the electrode bender and the shim set for about 4 dollars to check/set the gap yourself. Do not! Use a gapping disc on these plugs, you will damage the iridium tip.

Does anyone know the difference between the ikh24 and the ik24?

From what I can tell they are completely different plugs.

Does this fit an 01 Tacoma ?

Yes, but I wouldn't recommend it. This spark plug has a very tight gap and isn't optimized for your Tacoma.

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Denso 5346 Spark Plug

Product ID: 14172161

Details

Brand
Denso
Core Material
Iridium
Thread Size
1.25mm
Top Material Type
Nickel
Vehicle Service Type
Car Truck

⚡0.4mm iridium electrode - max spark efficiency

🔥U-groove & taper cut electrode - faster flame growth

🔩360° laser welding - unmatched durability

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€ 28.40

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Description

⚡ Ignite your drive with precision-engineered power!

UNBREAKABLE BOND - DENSO’s patented 360-degree laser welding ensures superior structural strength and long-lasting reliability.
PLUG PLAY UPGRADE - Direct fit replacement with recommended torque specs included—smooth idle and improved power right out of the box.
RACE PROVEN ENDURANCE - Trusted by high-performance vehicles running race fuel, delivering consistent power and longevity under extreme conditions.
RAPID COMBUSTION BOOST - U-groove and taper cut ground electrode design accelerates spark flame growth, enhancing throttle response.
PRECISION IGNITION POWER - World’s smallest 0.4mm iridium center electrode maximizes firing potential for peak engine performance.

The Denso 5346 Spark Plug features a groundbreaking 0.4mm iridium center electrode for maximum spark efficiency, combined with a U-groove and taper cut ground electrode for faster flame growth. Its patented 360-degree laser welding guarantees exceptional durability and performance, making it a top choice for both everyday drivers and high-performance enthusiasts seeking reliable, long-lasting ignition.

Specifications

ASIN	B000M6WPXM
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#389,902 in Automotive ( See Top 100 in Automotive ) #77 in Automotive Performance Spark Plugs #7,424 in Automotive Ignition Parts
Brand	Denso
Brand Name	Denso
Compatible with Vehicle Type	Car, Truck
Core Material	Iridium
Customer Reviews	4.4 out of 5 stars 108 Reviews
Gap Size	0.8 Millimeters
Global Trade Identification Number	00042511053465
Included Components	Spark Plug
Item Type Name	Spark Plug
Item Weight	0.05 Kilograms
Manufacturer	Denso
Manufacturer Part Number	IKH24
Manufacturer Warranty Description	Includes manufacturer provided warranty
Model Number	IKH24
OEM Equivalent Part Number	DENS7
Thread Size	1.25mm
Top Material Type	Nickel
UPC	042511053465
Unit Count	1.0 Count
Vehicle Service Type	Car, Truck

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