NGK Stock Heat Range Iridium Spark Plugs Subaru STI 2004-2021 (6619 LFR6AIX-11) (Qty 4)

Rated 5.0 out of 5
Based on 5 reviews
ngk6619
67 In stock
Spark Plugs and Plasma Coils

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$34.97
Part #: ngk6619

Why NGK Iridium? More Durability and a Higher Melting Point compared to Platinum, better center electrode anti-oxidation and anti-erosion, improved ignition, superior anti-fouling, lower required voltage, new metal shell plating process for better anti-corrosion. One Step Colder plugs are reccomended for cars with heavy modifications. These NGK plugs will get your Turbo Subaru running smoother and free up some power through increased efficiency and increased heat resistance.

These are available in stock heat or one step colder for cars running approximately 100 horsepower more than stock. Please make sure you choose the correct vehicle below. Please Note:Iridium plugs are able to use larger gap setting with less voltage. Some customers choose to regap these plugs to correct misfiring or tune for optimal spark -- do so at your own risk -- slide-type plug gapper will damage the fragile iridium tip. PRICE IS FOR A SET OF FOUR SPARK PLUGS.

RETURNS POLICY

Any returns for an exchange or refund will be allowed within 30 days from the receipt of your order and must be authorized prior to shipping with an RMA Number (Return Merchandise Authorization). To receive your return instructions and RMA# please use our online form under Returns and Exchanges! Once you receive your return instructions please ship out the item at your earliest convenience and provide the tracking number to your customer service rep. The customer will be responsible for all shipping fees. Before shipping your product back please make sure you package it up exactly how you received it and in all of its original packaging. All items must be in brand new and resalable condition. Once the item is received it will be inspected and a credit will be issued accordingly. All returns are subject to a 15% restocking fee. Any returns received without an RMA# will be charged a restocking fee and any shipping fees associated with the return. An item that does not ship directly from IIR's warehouse is considered a "special order" item and no returns will be authorized.

average rating 5.0 out of 5
Based on 5 reviews
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100% of reviewers would recommend this product to a friend
5 Reviews
Reviewed by Curtis C.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Did the trick!

Hesitation during increased acceleration. Swap out for some new plugs and she’s running a lot better!!

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Reviewed by Corey L., from United States
I recommend this product
Rated 5 out of 5
Review posted

Awesome

I run this spark plug in my 15 sti best plug on the market for a stage 2 car

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Reviewed by Sebas, from United States
I recommend this product
Rated 5 out of 5
Review posted

Best plugs when going for oem heat ranges

Fast shipping

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Reviewed by Dylan M., from United States
I recommend this product
Rated 5 out of 5
Review posted

Amazing! Priced Well!

Previous owner never changed my plugs and made a huge improvement.

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Reviewed by Austin K., from United States
I recommend this product
Rated 5 out of 5
Review posted

Fast and priced well!

These came on a day early and worked perfectly. Definitely would recommend.

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NGK Stock Heat Range Iridium Spark Plugs Subaru STI 2004-2021 (6619 LFR6AIX-11) (Qty 4)
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