My Account
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order

NGK 6743 BMR4A Standard Copper Core Resistor Spark Plug

Manufacturer

Picture for manufacturer NGK Spark Plugs

Part Number

6743
9 reviews
Sale Price

$3.98

In Stock (5)

delivery box

Usually delivered within 2 days

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The NGK 6743 spark plug (NGK BMR4A) is a standard-grade replacement ignition plug. It is also sold as a carded standard spark plug, and it suits lawn and garden and other small engine equipment. It ignites the air-fuel mixture in the combustion chamber for reliable starting and smooth running.

Key Features:

  • Copper core: a solid copper core helps dissipate heat and conduct well across a broad heat range.
  • Nickel alloy center electrode: OE-quality construction gives consistent performance.
  • Built-in resistor: an internal resistor helps limit wear on the ignition system.
  • Alumina silicate ceramic insulator: provides strong dielectric performance and good heat transfer.
  • Triple gasket sealing: helps prevent combustion gas leakage.
  • Corrosion-resistant plating: trivalent metal plating makes installation and removal easier and resists seizing.
  • Pre-gapped: 0.7 mm gap.

NGK Standard plugs are best for engines that originally came with nickel alloy plugs. They are not recommended where the factory plug is a precious metal type. This is a genuine NGK part, from a leading OE spark plug supplier with decades of experience across automotive, motorcycle, marine and small engine applications.

Products specifications

Stock Number

6743

Part Number

BMR4A BLYB

Manufacturer Heat Range

4

Ground Electrode Core Material

Nickel

Seat Type

FLAT

Center Electrode Tip Material

Nickel

Ground Electrode Quantity

1

Electrical Terminal Type

Removable Nut

Pre-Gap Size

.028

Resistance

10000

Ground Configuration

Standard

Insulator Height

40.00

Hex Size

3/4

Center Electrode Core Material

Copper

Ground Electrode Tip Design

Standard

Reach

.375

Thread Diameter

14.00

great pricing and received my purchase quickly. the box was a bit torn up, but the contents were fine.

I did a search with the part number and decided to give your company a try.

Lowest price I can find! Sent tracking number via FedEx without trouble! Would recommend!

I'm a stickler for finding the best prices on my purchases, while also making sure that the products I buy are legit and not some cheapo knock-offs.<br>I did my homework on the Clutch Stage 2 kit I wanted for my Spec V and found that Autoplicity had the best price anywhere, even a spot where I had 10% off came out to be more expensive.<br><br>I received my Clutch Stage 2 clutch kit pretty quickly (about 1 week) and everything was as expected.<br><br>Overall I would rate Autoplicity a perfect 10, although I did not have to contact their customer service or initiate a return, so the '10' would be on product selection, communication, website experience, and overall feeling that I got the best deal out there.<br><br>Thanks!

Ordered a Simpson helmet on Monday afternoon, received tracking on Monday evening and will have the product on Wednesday! Quick service! Also would like to mention that the price was the lowest of anywhere I looked up.

Autoplicity had the lowest price online for the product I needed. I will definitely buy from them again.

Good experience would definitely buy from again

Great website and the ordering was easy too. I like the way they show the full price including shipping and tax. Got the confirmation immediately and the shipment notification the next business day. <br>

Great seller! good communication between autoplicity and buyer!<br>Also very quick to process and send out product! Got order within 6 days standard shipping! Will purchase from again!!

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy