will these plugs fit a fr730v kawasaki engine?????

Yes I used these on my Toro Timecutter mower with the same Kawasaki engine. They work fine.

Will this plug fit my Husqvarna Z254F 54 inch zero turn

Check reference books in auto shop or dept. for specifics accompanied to what your whip manual lists.

Is the spark plug pre-gapped or do I need to do it?

They're gapped at about .032"...my application calls for .030", so I adjusted them.

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NGK 6578 Spark Plugs (BPR4ES) - Pack of 2, Copper

Product ID: 328933686

Details

Brand
NGK
Core material
Copper
Thread size
14mm
Top material type
Alumina
Vehicle service type
Motorcycle

⚡Corrugated ribs prevent flashover

🔥Copper core for superior heat removal

🛡️Trivalent metal plating resists corrosion & seizing

€ 51.52

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Description

⚡ Ignite your ride with NGK’s pro-grade spark plugs—because every spark counts!

FLASHOVER NOT HERE - Innovative corrugated ribs eliminate spark flashover for reliable ignition
DURABILITY THAT LASTS - Trivalent metal plating ensures long-lasting corrosion and seizure resistance
STRENGTH MEETS PRECISION - Pure alumina silicate ceramic insulator delivers superior strength and efficient heat transfer
TRUSTED BY PROFESSIONALS - NGK’s 6578 spark plugs boast a 4.8-star rating from over 3,300 riders—join the elite
UNMATCHED HEAT MANAGEMENT - Copper core rapidly dissipates heat for peak engine performance

The NGK 6578 Spark Plugs (BPR4ES) pack of 2 features a copper core for enhanced heat removal, trivalent metal plating for superior corrosion and seizure resistance, and corrugated ribs to prevent flashover. Designed with a pure alumina silicate ceramic insulator, these plugs deliver exceptional strength and heat transfer, making them a top choice for motorcycle enthusiasts seeking reliable ignition and long-lasting performance.

Specifications

ASIN	B07CCGGMNZ
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	209,102 in Automotive ( See Top 100 in Automotive ) 989 in Car Spark Plugs
Brand Name	NGK
Compatible with Vehicle Type	Motorcycle
Core Material	Copper
Customer Reviews	4.8 4.8 out of 5 stars (3,362)
Item Weight	0.13 Pounds
Manufacturer	NGK
Manufacturer Part Number	6578
Model Number	6578
Number of Items	1
OEM Equivalent Part Number	6578
Thread Size	14mm
Top Material Type	Alumina
UPC	087295465783

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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€ 51.52

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered 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 Greece.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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