NGK

NGK Spark Plug SILZKR7B11 9723 Pack of 6

$86.45

815+ bought in the past month

About this item

  • 6 pack NGK Laser Iridium 9723 Spark Plug
  • Genuine NGK Parts
  • Includes original packaging and hardware
  • Direct replacement auto parts
  • Confirm vehicle fitment with Amazon Confirmed Fit
$86.45

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Product details
BrandNGK
Core MaterialIridium
Thread Size5.375mm
Top Material TypeIridium
Vehicle Service TypeCar, Truck
Technical specifications
brandNGK
core_materialIridium
thread_size5.375mm
top_material_typeIridium
vehicle_service_typeCar, Truck
automotive_fit_typeVehicle Specific Fit
upc087295182024
oem_part_number9723
manufacturerNGK
model6 pack NGK Laser Iridium 9723 Spark Plug
item_weight8.6 ounces
product_dimensions3.7 x 0.94 x 4.98 inches
item_model_number9723
manufacturer_part_number9723
positionFront, Rear
best_sellers_rank#77,176 in Automotive ( See Top 100 in Automotive ) #522 in Automotive Replacement Spark Plugs
date_first_availableMarch 8, 2019

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Customer reviews

4.8310 ratings
  1. 588%
  2. 413%
  3. 30%
  4. 20%
  5. 10%

Customers say

Customers find these spark plugs to be of high quality, with one noting they're an excellent OEM replacement for a Kia Forte. Customers report improved gas mileage and easy installation.

★★★★★

Pleased with quality and performance and price

S J S BrodbeckJanuary 20, 2026✓ Verified purchase

purchased for a 2017 Jeep Wrangler Sahara and no issues. I can see a difference in the Jeep performance. Replaced spark plugs was long overdue. Happy with quality of the product. pleased with price point. Read more

★★★★★

Smooth Startup and Improved MPG with NGK Laser Iridium

Carlos SMay 26, 2025✓ Verified purchase

I recently installed the NGK SILZKR7B11 spark plugs, and I’m genuinely impressed. Installation was a breeze thanks to the pre‑gapped design and perfect OEM fit—no adjustments needed. From the very first start, my engine fires instantly and runs smoothly; acceleration feels crisper, and I’ve noticed about a 1–2 MPG boost on my daily commute. Highly recommend for anyone looking to sharpen throttle response and squeeze out a bit more fuel efficiency! Read more

★★★★★

Best spark replacement for OEM

SaifMarch 3, 2026✓ Verified purchase

Great plugs replacement for OEM. Best prices out there’s, engine performs better and smoother. Easy to install and durable. Read more

★★★★★

Worked great!

Sarah ParrillaOctober 6, 2025✓ Verified purchase

Excellent! My car was a little bit off and I swapped the plugs with these (much cheaper than the store) and they worked and still work great! Read more

★★★★★

fired right up!

DesertLifeJuly 9, 2025✓ Verified purchase

The price for these locally were astronomical! Glad I found these here. Fit perfectly, pre gapped which you don't wanna mess with anyway, and fired right up! 10/10 recommended! Read more

★★★★☆

NGK plugs are what I always use after a bad experience with Champions in my Mopars.

MoparCzyMarch 16, 2025✓ Verified purchase

The listing on Amazon contains the correct information, the spark plugs were indeed the correct ones for my car. Read more

★★★★★

Legitimate dealer

JonMarch 13, 2026✓ Verified purchase

An amazing price from actual authorized dealer of NGK. Read more

★★★★★

Great product, great price!

Eric PlentDecember 5, 2023✓ Verified purchase

I have always had great success with NGK spark plugs and all of my cars over the years, and this is no exception. My 2017 Hyundai was equipped with this exact plug from the factory, so when doing the 100,000 mi maintenance I replaced them with the same product since they are a proven entity and performed well over their lifespan. Buying these plugs from Amazon was considerably less expensive than going either through the dealer or retail stores, saving me at least $50 over what I would have spent elsewhere. Delivery was fast, and the product was exactly as expected. All the plugs were pregapped as advertised and did not require any adjustment (not that you would adjust iridium plugs... ) Read more

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