Apart from Denso being OEM plugs in my car, ive never used them since, always playing it safe with NGK. However the price of a plug for a lpg converted car ( very plug fussy and hard on the plugs) was getting silly and saw these at nearly half the price.... yet with excellent online reviews by users, so i took a gamble. Glad i did. They are excellent. My diagnostic software shows the car running as sweet as a nut and no problems. Longer term i can't tell you, but Denso don't appear to have any issues, after all they are OEM on my sports car. Quick update... it's now Jan 2018, cover a good few thousand miles on them and still as good as new.
Verified purchase: Yes | Condition: New
In 53 years of driving, repairing and tuning cars, these Iridium spark plugs are the best product yet, it has transformed my V6 200 HP non turbo sport tourer made it throttle responsive with instant response with the power/torque, the tick over is much smoother and stronger, allows me to pull away without revving the engine. GREAT PRODUCT Philip Giles Birmingham
Verified purchase: Yes | Condition: New
proper original equipment sparkplugs fitted as new by the car manufacturers. perfect fit and top quality at a low low price. highly recommended.
Verified purchase: Yes | Condition: New
These spark plugs r excellent easier cold start up the idling is much smoother an the accelation is far far quicker would recommended them 100% for other people
Verified purchase: Yes | Condition: New
The Plugs are used instead of NGK LPG6 irridium tipped plugs and work just as well but for about 60% of the price of the NKG. Excellent value
Verified purchase: Yes | Condition: New
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