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2019 Toyota Sienna

Spark Plugs

A bad spark plug can reduce your gas mileage, cause your engine to backfire, and even damage key engine components. Replace it immediately to keep your vehicle in top condition. Browse our wide selection of replacement spark plugs at unbeatable prices here at CarParts.com. All our products are made by the most trusted brands in the industry. Check out our spark plugs today to find the perfect part for your vehicle.
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Iridium Long Life Series Spark Plug, Sold individually
Part Number: NP3491
Guaranteed to Fit
$25.49
Vehicle Fitment
  • 2019 Toyota Sienna XLE Premium 6 Cyl 3.5L
  • 2019 Toyota Sienna L 6 Cyl 3.5L
  • 2019 Toyota Sienna Limited 6 Cyl 3.5L
  • 2019 Toyota Sienna CE 6 Cyl 3.5L
  • 2019 Toyota Sienna LE 6 Cyl 3.5L
  • 2019 Toyota Sienna XLE 6 Cyl 3.5L
  • 2019 Toyota Sienna SE Premium 6 Cyl 3.5L
  • 2019 Toyota Sienna Limited Premium 6 Cyl 3.5L
  • 2019 Toyota Sienna SE 6 Cyl 3.5L
Product Details
Spark Plug Code : FK20HBR8Electrode Tip Material : Iridium-Rhodium Alloy Electrode TipQuantity Sold : Sold individuallyWarranty : 1-year Denso limited WarrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreSeries : Iridium Long Life Series
Iridium Long Life Series Spark Plug, Set of 6
Part Number: SET-NP3491-6
Guaranteed to Fit
$93.99
Vehicle Fitment
  • 2019 Toyota Sienna XLE Premium 6 Cyl 3.5L
  • 2019 Toyota Sienna L 6 Cyl 3.5L
  • 2019 Toyota Sienna Limited 6 Cyl 3.5L
  • 2019 Toyota Sienna CE 6 Cyl 3.5L
  • 2019 Toyota Sienna LE 6 Cyl 3.5L
  • 2019 Toyota Sienna XLE 6 Cyl 3.5L
  • 2019 Toyota Sienna SE Premium 6 Cyl 3.5L
  • 2019 Toyota Sienna Limited Premium 6 Cyl 3.5L
  • 2019 Toyota Sienna SE 6 Cyl 3.5L
Product Details
Spark Plug Code : FK20HBR8Electrode Tip Material : Iridium-Rhodium Alloy Electrode TipQuantity Sold : Set of 6Warranty : 1-year Denso limited WarrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreSeries : Iridium Long Life Series
Iridium TT Series Spark Plug, Sold individually
Part Number: NP4705
Guaranteed to Fit
$18.99
Vehicle Fitment
  • 2019 Toyota Sienna XLE Premium 6 Cyl 3.5L
  • 2019 Toyota Sienna L 6 Cyl 3.5L
  • 2019 Toyota Sienna Limited 6 Cyl 3.5L
  • 2019 Toyota Sienna CE 6 Cyl 3.5L
  • 2019 Toyota Sienna LE 6 Cyl 3.5L
  • 2019 Toyota Sienna XLE 6 Cyl 3.5L
  • 2019 Toyota Sienna SE Premium 6 Cyl 3.5L
  • 2019 Toyota Sienna Limited Premium 6 Cyl 3.5L
  • 2019 Toyota Sienna SE 6 Cyl 3.5L
Product Details
Notes : 16 mm Hex Size; (3) Ground Electrodes; Flat Seat Type; Platinum Twin-Tip Ground Electrode Tip Design; Twin-Tip, Multi-Electrode ConfigurationElectrode Tip Material : Iridium-Rhodium Alloy Electrode TipQuantity Sold : Sold individuallyWarranty : 1-year or 12,000-mile Denso limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Nickel Copper Alloy Electrode CoreReach : 1.04 in. ReachGap Size : 0.04 in.Recommended Use : OE ReplacementSeries : Iridium TT SeriesHeat Range : 20Thread Size : 0.55 in.
Iridium TT Series Spark Plug, Set of 6
Part Number: SET-NP4705-6
Guaranteed to Fit
$69.49
Vehicle Fitment
  • 2019 Toyota Sienna XLE Premium 6 Cyl 3.5L
  • 2019 Toyota Sienna L 6 Cyl 3.5L
  • 2019 Toyota Sienna Limited 6 Cyl 3.5L
  • 2019 Toyota Sienna CE 6 Cyl 3.5L
  • 2019 Toyota Sienna LE 6 Cyl 3.5L
  • 2019 Toyota Sienna XLE 6 Cyl 3.5L
  • 2019 Toyota Sienna SE Premium 6 Cyl 3.5L
  • 2019 Toyota Sienna Limited Premium 6 Cyl 3.5L
  • 2019 Toyota Sienna SE 6 Cyl 3.5L
Product Details
Electrode Tip Material : Iridium-Rhodium Alloy Electrode TipQuantity Sold : Set of 6Warranty : 1-year or 12,000-mile Denso limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Nickel Copper Alloy Electrode CoreReach : 1.04 in. ReachSeries : Iridium TT SeriesGap Size : 0.04 in.Heat Range : 20Recommended Use : OE ReplacementThread Size : 0.55 in.
Page 1 of 1 | Showing 1 - 4 of 4 results

Top Rated Products

Very satisfied
Jimmy A.
VERIFIED PURCHASER
Exactly what they said they are
Jonathan W.
VERIFIED PURCHASER
Everything came in on time and in perfect shape. Ty guys for all of your help. You a See More
Pamula W.
VERIFIED PURCHASER

Product Questions & Answers

Q:Is the denso # 37652-05831?thanks
Pete B.
A:BEST ANSWERHi Pete, thank you for reaching out. No, this is not. Per checking, we don't have a matching product for your part number. Kindly call our parts team at 1-866-529-0412 and provide the complete vehicle information. We'll be more than glad to help you look for the correct part. Have a nice day. Show less
Aldrin P.
 
1 Question, 1 AnswerView all Q&As >
Q:what is recommended life of these plugs?
Jim W.
A:BEST ANSWERHi Jim, thanks for initiating contact. According to the search results, these Iridium plugs have a recommended service life of up to 100,000 miles which is about 3 times longer than conventional spark plugs. Their iridium and platinum construction allows them to withstand extreme conditions for extended periods. If your vehicle information matches this product, use the link below to order while the part is in stock. Your order will come with a 30-day post-purchase price match guarantee. Enjoy shopping! https://www.carparts.com/spark-plug/denso/set-np3491-6?can=CPGG4850_CSQA_20240712 Show less
Grace G.
 
1 Question, 1 AnswerView all Q&As >

Shopping for Spark Plug

Spark Plug Shopping Info

What Is a Spark Plug?

Spark plugs are some of the most important parts of any vehicle — you can’t even start your car without them. The spark plug is responsible for creating the initial spark, very similar to a controlled bolt of lightning, that is necessary to start the combustion process.

How Much Does a Spark Plug Replacement Cost?

Aftermarket spark plugs can cost anywhere between $5 to $100 depending on the quantity of the spark plugs you’re buying and the electrode material. Platinum and iridium-tipped spark plugs usually cost a little more than standard nickel-alloy spark plugs. Labor costs, on the other hand, can range from $40 to $250 depending on your area and the exact make and model of your vehicle.

Shop for Aftermarket Spark Plugs on CarParts.com

For your convenience, look no further than CarParts.com when you’re searching for an aftermarket spark plug for sale. With our wide selection of spark plugs compatible with different makes and models, it’s easy to find the best one for your vehicle right here.

Our spark plug catalog consists of spark plugs in different thread sizes, which come in direct-fit or universal-fit options. We also carry spark plugs with different electrode cores and electrode tips such as nickel alloy, copper alloy, iridium, and platinum. This allows you to buy spark plug replacements that suit your specific application and budget. To make it even more convenient for you, you can buy our spark plugs individually, in pairs, or in sets of four.

We pride ourselves in selling only high-quality spark plugs that were manufactured and tested in outstanding facilities, so you can rest assured that you’re getting reliable, fully functional spark plugs when you shop with us.

Visit CarParts.com today, and get a replacement spark plug or set of spark plugs delivered straight to your doorstep in as fast as two business days.

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P0354 Code: Ignition Coil “D” Primary/Secondary Circuit
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P0316 Code: Engine Misfire Detected on Startup (First 1000 Revolutions)
P0316 Code: Engine Misfire Detected on Startup (First 1000 Revolutions)Diagnostic trouble code (DTC) stands for “Engine Misfire Detected on Startup (First 1000 Revolutions).” Basically, if one or more of the engine’s cylinders misfires during the engine’s first 1,000 revolutions, the PCM sets code P0316.