76% under what the other stores charge
Compared across 14 stores. Prices are checked against each store and labelled with when.
It checks today's price at every store, compares the alternatives and answers in about a minute.
The NGK LFR7AIX is an Iridium IX spark plug sold in a box of four. It uses a fine-wire iridium center electrode that NGK rates as six times harder than platinum, plus a tapered cut ground electrode aimed at easier starting, steadier idle and sharper throttle response. It suits drivers who want a durable plug for a tuned or high-mileage engine and who are willing to pay more than for a standard nickel or platinum plug. Against NGK's own Ruthenium HX line, the Iridium IX is the older, more widely proven design; against budget copper plugs it lasts longer and resists fouling better, but it is not a performance gain you will feel on a stock engine.
In stock
In stockShips from Canada · duties may applyReturn policy
In stockSold by Nuk3y Corp
In stockReturn policy
In stockSold by espeedshop
Availability unknown
Availability unknown
As an Amazon Associate, Deal.ai earns from qualifying purchases.
Availability unknown
Availability unknown
Availability unknown
Availability unknown
Availability unknown
Availability unknown
Availability unknown
Store links may earn us a commission.
Lowest price we've seen: $10.15 on Nov 13 at Zoro. Tracked across 12 stores since Nov 13.
Owners of Iridium IX plugs generally report smooth idle, quick starts and long service life, and many buy them as a direct replacement for factory plugs. Complaints center on price and on plugs that arrive with the wrong gap or fail early, which owners often blame on counterfeit stock.
The NGK Iridium IX (LFR7AIX) is an iridium spark plug made for performance enthusiasts. This listing is a box of 4 plugs, NGK part number 2309.
It has a fine wire iridium center electrode. The iridium center electrode is six times harder than platinum, and the alloy has a very high melting point. The ground electrode has a tapered cut, which improves starting, idling and throttle response.
NGK Iridium IX plugs provide acceleration, fuel efficiency and durability. They offer high ignitability and resist fouling.
