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 for reliable ignition

🔥Copper core for superior heat dissipation

🛡️Trivalent metal plating resists corrosion & seizing

€ 45.03

Duties & taxes included

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Ignite your ride with NGK’s precision spark plugs—where power meets reliability!

DURABILITY THAT LASTS - Trivalent metal plating ensures long-term corrosion and seizure resistance
IGNITION YOU CAN TRUST - Corrugated ribs eliminate flashover, delivering consistent spark performance
PERFECT FIT FOR YOUR RIDE - Vehicle-specific design guarantees seamless installation and optimal performance
UNMATCHED HEAT MANAGEMENT - Copper core rapidly removes heat, boosting engine efficiency
PREMIUM STRENGTH INSULATION - Pure alumina silicate ceramic insulator offers superior strength and heat transfer

The NGK 6578 Spark Plugs (BPR4ES) pack of 2 features a copper core for enhanced heat dissipation, 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, ensuring reliable ignition and optimal engine performance for motorcycles.

Specifications

ASIN	B07CCGGMNZ
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	76,428 in Automotive ( See Top 100 in Automotive ) 420 in Car Spark Plugs
Brand	NGK
Brand Name	NGK
Compatible with Vehicle Type	Motorcycle
Core Material	Copper
Core material	Copper
Customer Reviews	4.8 out of 5 stars 3,264 Reviews
Item Weight	0.13 Pounds
Manufacturer	NGK
Manufacturer Part Number	6578
Model Number	6578
Number of Items	1
Number of items	1
OEM Equivalent Part Number	6578
Thread Size	14mm
Thread size	14mm
Top Material Type	Alumina
Top material type	Alumina
UPC	087295465783
Vehicle service type	Motorcycle

Reviews

R**G

4 Pack Great Deal NGK's

There are legit and great replacements. The 4 pack is super convenient.

11.05.2026

F**E

Work good

As advertised

25.07.2026

S**T

Perfect

Just right

24.03.2026

H**P

NGK plugs are the best.

Came pre-gapped and in good condition. As advertised. No issues. A+

26.05.2026

B**N

Quality plugs

Work great in my Kawasaki F451V mower engine.

5.06.2026

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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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.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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€ 45.03

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

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

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