What are the service and repair procedures for the spark plugs on 2004 Toyota Sienna?

Toyota does not specify service procedures for spark plugs. The Sienna uses a coil-on-plug (COP) ignition system with three coils per bank, each covering a spark plug. To access the plugs near the firewall, you may need to remove the FR cowl top assembly or V-bank cover first.

OEM 2004 Toyota Sienna Spark Plug

Ignition Spark Plug

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2004 Toyota Sienna Spark Plug
Part Number: 90080-91180
$10.86 MSRP: $15.12
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Product Specifications
- Other Name: Plug, Spark; High Ignitability; Iridium Long-Life; Double Platinum; Iridium Power; Platinum TT; Iridium TT
- Replaces: 90919-01210, 90080-91181, 90919-01178, 90919-T1007, 90919-01237, 90919-01211
- Part Name Code: 19100P
- Item Weight: 0.50 Pounds
- Item Dimensions: 3.3 x 1.0 x 1.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 90080-91180
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
More Info
Fits the following 2004 Toyota Sienna Submodels:
- CE, LE, Limited, XLE, XLE Limited | 6 Cyl 3.3 L GAS

2004 Toyota Sienna Spark Plug

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2004 Toyota Sienna Spark Plug Parts Q&A

Q: What are the service and repair procedures for the spark plugs on 2004 Toyota Sienna?
A: Toyota does not specify service procedures for spark plugs. The Sienna uses a coil-on-plug (COP) ignition system with three coils per bank, each covering a spark plug. To access the plugs near the firewall, you may need to remove the FR cowl top assembly or V-bank cover first.

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2005 Toyota Sienna Spark Plug