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

¥7714

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

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Description

⚡ Ignite your engine’s potential with NGK’s precision spark plugs!

DURABILITY THAT LASTS - Trivalent metal plating ensures long-term anti-corrosion and anti-seizing protection
IGNITION YOU CAN TRUST - Corrugated ribs eliminate flashover, delivering consistent spark performance
PROVEN LEGACY OF QUALITY - NGK’s trusted spark plugs, favored by professionals for decades
STRENGTH MEETS PRECISION - Pure alumina silicate ceramic insulator offers superior strength and optimal heat transfer
UNMATCHED HEAT MANAGEMENT - Copper core rapidly removes heat, boosting engine efficiency

The NGK 6578 Spark Plugs (BPR4ES) pack of 2 features a copper core for enhanced heat removal, trivalent metal plating for superior corrosion and seizing resistance, and corrugated ribs to prevent flashover. Designed with a pure alumina silicate ceramic insulator, these plugs deliver reliable ignition and durability, making them a trusted choice for professional-grade engine performance.

Reviews

G**.

no misfires

good replacement plugs

25.05.2026

R**G

4 Pack Great Deal NGK's

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

11.05.2026

S**N

Sprakplugs work great

Works great

9.08.2025

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

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Fantastic and great service. Shipping was faster than expected.

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1 month ago

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¥7714

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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Brand	NGK
Core material	Copper
Number of items	1
Thread size	14mm
Top material type	Alumina
Vehicle service type	Motorcycle

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

Details

Details

Description

Specifications

Reviews

Common Questions