NGK (4469) LFR5AIX-11 Iridium IX Spark Plug, Pack of 1

by NGK

Product Features

• You can depend on NGK for quality and reliability
• Constructed from durable material
• Fine Iridium tip ensures high durability
• Features superior anti-corrosion and anti-seizing properties
• Iridium alloy has extremely high melting point, perfect for today?s high-tech, high-performance engines

Product Details

• Shipping Weight: 1.6 ounces (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B000GZGUP8
• Item model number: LFR5AIX-11
• Average Customer Review: 5.0 out of 5 stars  See all reviews (4 customer reviews)
• Amazon Best Sellers Rank: #17,843 in Automotive (See Top 100 in Automotive)

Product Description

NGK Iridium IX Spark Plug is designed to offer extreme ignitability, improved throttle response and superior anti fouling capacity. It is constructed from durable material that is corrosion and abrasion resistant. This Spark plug features a fine iridium tip that ensures high durability. It ensures longevity and can easily be installed.

Customer Reviews

Most Helpful Customer Reviews

6 of 6 people found the following review helpful:

5.0 out of 5 stars Good Plug at a decent price, April 17, 2010

By 

Vtec26 (Los Angeles, CA) - See all my reviews

Amazon Verified Purchase

This review is from: NGK (4469) LFR5AIX-11 Iridium IX Spark Plug, Pack of 1 (Automotive)

I was looking to replace platinum plugs on my Infiniti after 95k miles. I tend to over analyze a lot of purchases and found plugs to be no different. I founds ones ranging in price from $1 to $15 each. In the end, i found some resources online that showed this plug to generate on average 2hp more than a baseline test. i cannot speak to the accuracy of that information, but can tell you from experience that switching plugs can have HP effects (I just can't verify anything about this particular plug without using a dyno).

The biggest and defensible difference is that gas milieage has increased. On my old plugs, over a 13,000 mile span i averaged 18.7 mpg. With these plugs over a 4,000 mile span i'm averaging 19.2 mpg. This is with no change in driving patterns. This is a 2.67% increase in mileage and with my annual driving i'm estimating that this translates into an annual fuel savings of ~$80. This fact by itself makes these plugs worth it.

one other added benefit is that my car seems to have smoother accleration from a dead stop. not more split second delay and very slight jerk.

of course all of these benefits could just be the fact that my old plugs were work and these are new and i would have seen the same results regardless what kind of plugs i got. i can only say that i'm happy with these particular ones.

4 of 4 people found the following review helpful:

5.0 out of 5 stars For 2002 Maxima, July 26, 2009

By 

J.F.L.-Fairfax VA "j_f_ligaya" (Annandale, VA United States) - See all my reviews

This review is from: NGK (4469) LFR5AIX-11 Iridium IX Spark Plug, Pack of 1 (Automotive)

Six of these NGK Iridium Platinum-tipped spark-plug will be needed at the 105,000-mile service for the 2002 Maxima (3.5L V6 Gas DOHC). Replacing the 2002-Maxima spark plugs is very laborious so having the dealer or your trusted car-mechanic do it for you makes sense. I recommend buying six of the NGK Iridium plugs from Amazon because otherwise, your mechanic will charge you the full list-price when they do the 105,000 mile service.

5.0 out of 5 stars Great Plug, February 1, 2012

By 

Victor Rangel (Los Angeles,CA USA) - See all my reviews
(REAL NAME)   

Amazon Verified Purchase

This review is from: NGK (4469) LFR5AIX-11 Iridium IX Spark Plug, Pack of 1 (Automotive)

I was looking to change my spark plugs on my 350z and knew I was going to get NGK I went to my local auto parts store and it was ridicules how much they where charging for them I'm glad I went to look under my amazon prime account and found them for cheaper then at the store. Great job amazon got them shipped the next day for 3.99