Replacement OEM Denso 673-1307 direct ignition coil pack

replacing the OEM Ignition coils after 241k miles 2006 Scion tC

Prevent Misfires and Rough Running
Weak or failing ignition coils can’t deliver a strong, consistent spark. This leads to engine misfires, rough idle, hesitation, and loss of smooth acceleration. Keeping coils in good condition helps your engine run cleanly and consistently.

Maintain Fuel Efficiency
When ignition coils misfire, fuel doesn’t burn completely. The result is wasted fuel and lower MPG. Properly functioning coils ensure efficient combustion, helping you get the most mileage out of every tank.

Protect Spark Plugs and Catalytic Converter
Faulty coils can overload spark plugs and send unburned fuel into the exhaust. Over time, this can foul plugs and overheat or damage the catalytic converter—one of the most expensive components in the exhaust system. Coil maintenance helps prevent these costly failures.

Ensure Reliable Starting and Performance
Ignition coils play a major role in cold starts and high-load situations like passing or climbing hills. Worn coils can cause hard starts or sudden power loss. Healthy coils deliver the voltage needed for dependable starts and strong performance.

Reduce Repair Costs and Breakdowns
Ignition coils are far cheaper and easier to replace than the damage they can cause if ignored. Catching weak coils early—before they fail completely—can prevent roadside breakdowns and expensive secondary repairs.


I you want to save money, Denso is the OEM manufacturer for the coil packs and they run about $75 each, instead of $90 from the dealer
The OEM Toyota part number for the direct ignition coil pack is 90919-02266 but it is a well known fact that that you can get the Denso 673-1307 instead and it’s virtually the same for all 2AZ-FE engines.
 

MAKE SURE YOU BUY FROM A RELIABLE SOURCE!

There are a lot of counterfeit Denso products on the market, especially on eBay.
In this article I compared my Amazon purchase to 2 known good resellers (RockAuto.com and DensoProducts.com) and I found everything to be Genuine.
 
For reference, here are some additional photos of Genuine Denso Ignition coil packaging
Genuine Denso 673-1307 direct ignition coil pack packaging front
Genuine Denso 673-1307 direct ignition coil pack packaging front
Denso ignition coil pack genuine package top 673-1307
Denso ignition coil pack genuine package top 673-1307
Denso 673-1307 replacement ignition coil packs side of box
Denso 673-1307 replacement ignition coil packs side of box
Denso 637-1307 genuine ignition coil packaging
Denso 637-1307 genuine ignition coil packaging
Genuine Desnso 673-1307 ignition coil pack packaging
Genuine Desnso 673-1307 ignition coil pack packaging
Genuine Denso ignition coil packaging plastic
Genuine Denso ignition coil packaging plastic
genuine denso ignition coil pack markings
genuine denso ignition coil pack markings
Denso 637-1307 ignition coil genuine scion tc 2005-2010
Denso 637-1307 ignition coil genuine scion tc 2005-2010
genuine denso 673-1307 ignition coil pack
genuine denso 673-1307 ignition coil pack

 
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