Would these work good in a supercharged 04 mustang ?

No. You need a smaller gap like .032 - .035 depending how much boost you got. These are gapped at .059 which would take too much bending to gap it down. NGK says not to change gap more than .008. NGK TR6ix would work better with preset gap at .039

The NGK TR55IX plugs do not fit a 2002 Tahoe, 5.3l flexfuel. Must use the TR5IX. Too many places including parts stores are selling the wrong plug.

I don’t know why you think the TR55IX won’t work, just a slightly cooler plug than the TR5IX. In a lot of climates, it would probably help more than hurt.

What is the gap preset on this plug?

Hi, Set of 8 TR55IX NGK Iridium IX plugs Gap: 1.5mm Heat: "5" Seat: taper NOTE: these are very similar to TR5IX, the difference is: TR5IX have 1.0mm gap and TR55IX have 1.5mm gap. They are the same heat rating, length, etc. NOT SUITABLE FOR Ford TS50 with alloy heads. Hope this info will help you make a decision.

Are these "one piece" spark plugs unlike the three piece design that comes as oem 2005 f150 4.6l?

I installed these plugs in a 2002 Mercury Mountaineer 4.6 liter and they were one piece....easy to install ...make sure you use anti seize compound on the threads...and gap them properly to specs...the motorcraft plugs are prone for breaking off inside the vehicles because they get too hot and become brittle after awhile...and most people dont change them every 40-50,000 miles...definetely recommend the NGK's

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NGK イリジウム IX スパークプラグ TR55IX # 7164

Product ID: 758233199

Details

ねじ山サイズ
14mm
コア材質
イリジウム
トップの素材タイプ
Iridium
ブランド
NGK
適合車両のタイプ
オートバイ

⏳Long-lasting durability for extended use

⚡Iridium core for max spark efficiency

🔧Precision 14mm thread size for perfect fit

768 Lei

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Description

⚡ Ignite your drive with NGK Iridium IX – where power meets precision!

OEM TRUSTED QUALITY - World’s largest OEM spark plug supplier ensures perfect compatibility
FUEL EFFICIENCY BOOSTER - Optimized spark gap improves combustion, saving you fuel costs
ENGINEERED FOR LONGEVITY - Designed to outlast standard plugs, reducing maintenance frequency
UNMATCHED IGNITION POWER - Iridium IX core delivers superior spark for peak engine performance
COMPLETE 8 PACK CONVENIENCE - Everything you need for a full tune-up in one purchase

The NGK Iridium IX Spark Plug TR55IX #7164 is a premium OEM-quality ignition component featuring a durable iridium core and 14mm thread size. Trusted by top manufacturers like Ford and GM, this 8-pack ensures reliable, long-lasting performance that enhances fuel efficiency and engine power, making it the go-to choice for professional-grade vehicle maintenance.

Specifications

ASIN	B0033I4W6E
Amazon 売れ筋ランキング	車＆バイク - 1,096,573位 ( 車＆バイクの売れ筋ランキングを見る ) 車用スパークプラグ - 6,554位
OEM相当部品番号	FORD%1315691
UPC	087295071649
おすすめ度	4.8 5つ星のうち4.8 (665) var
ねじ・ボルトの呼び	14mm
コア材料	イリジウム
ブランド名	NGK
メーカー名	NGK
メーカー型番	7164 TR55IX
ユニット数	8.00 本
付属コンポーネント	7164
商品のハイライト	12 14 15 16 SP432 41-902 41-913 41-919 41-929 41-931 41-932 41-936 41-942 41-943 41-952 41-9 74 241-902
商品の入り数	8
商品の重量	0.72 ポンド
型番	7164
自動車の取り付けタイプ	車種専用フィット
表板の材質	Iridium
車両の種類と互換性がある	オートバイ

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768 Lei

Duties & taxes included

In stock

Sold byAmazon RomaniaDelivered 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 Romania.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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