Features:

  • SK20R11
  • Excellent acceleration and performance
  • Stable combustion during idling
  • Long life and high reliability
  • Features iridium with high melting point
For 2003 Toyota Sienna

I just changed all 6 plugs on my 2003 Sienna at 91K miles. The original plugs are NGK IFR6A11 and still worked. Toyota's service manual says to replace them at 120K but my dealership recommended it during the 90K service. So I thought I should give it a try. Toyota's manual recommends either the NGK or this Denso. There are two Denso replacement; this one is supposed to last 120K miles and the other one is supposed to last 60K. I am glad I bought this one as the replacement of the back 3 plugs is very difficult. It took me about 10 minutes for the front 3 plugs but 2 hours for the back 3. Most time was spent on unscrewing the bolts and plugs as they were very tight and untouched for 6 years and the room for ratchet movement is small. I also bought GearWrench 5/8" swivel magnetic socket (80546) for the job, which turned out to be extremely useful for the back 3 plugs. I immediately felt improvement after the spark plug replacement. The engine runs much smoother and quieter and it reminds me of what I felt when the car was new. Update in July, 2016: The above review was written in 2009. I just replaced the plugs again with these Denso SK20R11 plugs. The back three still took more time because they are hard to reach. I could not remove a bolt for spark plug ignition coil in the back because it was rounded due to the limited maneuvering space and the socket I used. The bolt is metric 10mm hex, and I used a 12-point socket. I finally bought a 6-point metric socket set to solve the problem. A 6-point socket minimizes the chance of rounding. So, to speed up your work, make sure you have the matching 6-point metric socket for the bolt as well as the magnetic swivel socket mentioned above.

Denso SK20R11 Long Life Spark Plugs

I just changed out the old plugs at 120,000 miles on my 2009 V4 2.4L Toyota Camry. They were the original factory plugs and they were the exact same Denso's SK20R11 that I purchased. They were still performing well at 120,000 miles. But it was time to change them so I am glad that I replaced them with the same Long Life Denso's. I plan on getting another 100,000+ miles out of these new plugs.

Very happy, worked perfectly for my Camry with the 2.4L I4

I bought these to replace the factory spark plugs on my 2005 Camry 2.4L I4. I'm at around 58K miles but the original plugs are about to hit 11 years old. For the price, I decided to just replace them. I wasn't seeing any particular problems except for a slight vibration at idle w/ the AC on but I consider that completely normal. I didn't want to leave the originals in for 15+ years and not be able to get them out, despite Toyota saying they are good for 100K miles. Steps for the Toyota 2.4L: - Remove plastic cover from top of engine (if equipped) - Remove coil pack boots - Remove old spark plugs (mine were NGK) - Install new plugs - Put coil pack boots back on - Put plastic cover back on This was my first time replacing spark plugs and it was very easy! As my car gets older I am learning how to do things on it, like brakes and whatever else. I changed my PCV + PCV hose along with my spark plugs and the car feels better. Gas mileage is the same, pretty crappy in the city but I drive "spiritedly" - idle is smooth, engine runs quietly. I opted NOT to put anti-seize, I read online that there's some kind of coating on the plugs already and that both Denso and NGK advise against anti-seize as well. It has to do with it changing the torque values. If these plugs last another ten years, I will probably get rid of the car before I ever have to change it again anyway. Overall, very happy. I think the price is fair for iridium tipped plugs that will last 100K miles. My factory plugs still looked very good after 58K miles / 11 years so I have no doubt that these will last a while as well.

Nice spark plugs for 2004 Toyota Highlander!

These spark plugs go in easy, and it only took me about 25 minutes tops. I personally put just a dab of "never-sees" on them before installation. I don't GOB it on, but just enough to be assured that I can get them off in the next 85k without inconvenience. In response to the review that said it took 15 days to get... I believe you, but I used Super Saver Shipping for these spark plugs, and received them within 5 days. So don't everyone go out and pay for shipping just because one person had troubles. "Super Saver" has always been just as efficient, or sometimes more efficient then payed shipping. These spark plugs are a great buy, and like others, I did notice an improvement in performance.

For 2006 Toyota Camry LE - GRRR8!!!

Absolutely factory fresh and brand spanking new - flawless. Not used to this small of a spark plug but according to specs and what the big guys say, these should last at least 100K miles with NO problems. Fit and finish are perfect and they went into the auto lickety split with NO problems what-so-ever. I'm now a happy driver. Ordered a 5/8" swiveling socket with these to install them with and it is the cat's meow for this installation with these plugs. Update: august 30, 2015 Need to add that I have experienced up to an increase of 3MPG on my Toyota since these were installed. Also, the engine starts more easily and quickly and runs much smoother with these plugs. Will never use another brand of plugs for my Camry!!!

OEM plugs that last a long time

Denso is one of the OEM manufactures of spark plugs for Toyota, and that speaks volumes. These are well made plugs that last a really long time. I have pulled and inspected them at 30,000 miles and they had no appreciable wear. My Toyotas run great on these and NGK iridiums, definitely worth the premium price if you take advantage of the extended maintenance interval.

Installed on 2003 Sienna.

I have these installed in a 2003 Sienna. As others have mentioned the OE plugs were NGK IFR6A11. Replacing the rear 3 plugs on this engine is a PITA but it can be done - just search the web. I got the confidence to do it and it took about 3 hours in all to replace all 6. They perform just as good as the OE plugs as expected and are a bit cheaper than the OE plugs to boot. My only beef was with the shipping. They were shipped in a book box with no packing so the plugs got jostled during shipment and some of them came out of their packaging. Fortunately, the round cardboard protectors that shield the electrodes did not come off so the plug gaps were intact.

Love Denso parts very happy for them to be made in USA/Japan.

Great OEM quality plugs for my 2005 Toyota Landcruiser 4.7L V8 (UZJ-100), these are made in USA from US and Japanese parts. They went into a truck which had 105k miles on it and never had the plugs replaced. Note they are 16 mm plug size, so you will need to use the 5/8" spark plug socket (it's pretty rare to find a 16 mm spark plug socket stateside) None of my old plugs were seized (old plugs were NGK from the factory) and I retorqued them to 14 ft/lbs per the FSM. I found on my truck that the 2 plugs closest to the firewall were the hardest to get out since I didn't have a shorter (4" vs 6") extension and the plug + socket + extension + wrench would hit the brake booster (driver side) or the firewall (passenger side) so I had to monkey around a bit to get them out. I did replace the ignition coil boots and grommets with the Denso kit #671-8484 (this sadly no longer made in Japan or US, but in China), but does seem to be comparable quality. Oh to access at least on my truck the passenger side plugs, I had to take the intake manifold off (two 10 mm hex screws and disconnected 4 hoses).

Denso does the job

I installed (March 2016) Denso SK20R11 Iridium spark plugs in my 2005 2.4L Toyota Camry XLE. I bought the car new and at 110K miles wanted to replace the spark plugs. I broke two (2) of the wiring harness plastic retainer clips in the process. I used electrical tape to keep them from disconnecting. I used my air compressor and removed the dust from around the coils and from inside the plug chamber. After much reading and online debate I chose not to use anti-seize grease on the threads and torqued the new plugs @ 14 foot pounds. The plugs were already perfectly gapped. My old Denso plugs showed minimal signs of wear. However, installing new plugs I think the engine ran smoother, quieter with more powerful and better gas mileage. This was an easy job and the plugs arrived quickly.

Great long life performance

I replaced the factory Denso SK20R11 plugs on my Toyota 4.7L V8 with these identical plugs after 120,000 miles of driving. The factory plugs were all still in very good condition after this mileage with gap spacing nearly identical to the new plugs (about 0.044 vs 0.043). Based on this, I am confident that these plugs will perform for another 120,000 miles. Quick sidenote... some of the factory plugs required a lot more force than I expected to remove. I installed the new plugs with anti-sieze and am glad that I did after fighting with the factory plugs. If the vehicle is still around after 240,000 miles, the plugs should come out easier!

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