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Spark Plug Motorcraft SP-421 fits 2006 Ford F-550 Super Duty 6.8L-V10

Secondary Ignition
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(69717)
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US $18.32
ApproximatelyAU $28.21
Condition:
Brand New
More information - About this item condition
Compatibility:
3 available
Breathe easy. Free delivery and returns.
Postage:
Free FedEx Ground / FedEx Home Delivery®.
Located in: Jacksonville, Florida, United States
Delivery:
Estimated between Sat, 30 Aug and Thu, 4 Sep to 94104
Delivery time is estimated using our proprietary method which is based on the buyer's proximity to the item location, the postage service selected, the seller's postage history, and other factors. Delivery times may vary, especially during peak periods.
Returns:
30-day returns. Seller pays for return postage.
Payments:
     Diners Club

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eBay item number:335172278492
Last updated on 27 Aug, 2025 15:18:15 AESTView all revisionsView all revisions

Compatibility

This part is compatible with 17 vehicle(s)
YearMakeModelTrimEngineNotes
2006FordF-550 Super DutyBase Cab & Chassis - Conventional 2-Door6.8L 415Cu. In. V10 GAS SOHC Naturally AspiratedPartType:Spark Plug Quantity Required:10 Note:Gap: .045; Type - Std Service Plg; 4 X 2, VIN: Y
2006FordF-550 Super DutyLariat Cab & Chassis - Crew Cab 4-Door6.8L 415Cu. In. V10 GAS SOHC Naturally AspiratedPartType:Spark Plug Quantity Required:10 Note:Gap: .045; Type - Std Service Plg; 4 X 2, VIN: Y
2006FordF-550 Super DutyLariat Cab & Chassis - Crew Cab 4-Door6.8L 415Cu. In. V10 GAS SOHC Naturally AspiratedPartType:Spark Plug Quantity Required:10 Note:Gap: .045; Type - Std Service Plg; 4 X 4, VIN: Y
2006FordF-550 Super DutyLariat Cab & Chassis - Extended Cab 4-Door6.8L 415Cu. In. V10 GAS SOHC Naturally AspiratedPartType:Spark Plug Quantity Required:10 Note:Gap: .045; Type - Std Service Plg; 4 X 4, VIN: Y
2006FordF-550 Super DutyLariat Cab & Chassis - Extended Cab 4-Door6.8L 415Cu. In. V10 GAS SOHC Naturally AspiratedPartType:Spark Plug Quantity Required:10 Note:Gap: .045; Type - Std Service Plg; 4 X 2, VIN: Y
2006FordF-550 Super DutyXL Cab & Chassis - Conventional 2-Door6.8L 415Cu. In. V10 GAS SOHC Naturally AspiratedPartType:Spark Plug Quantity Required:10 Note:Gap: .045; Type - Std Service Plg; 4 X 2, VIN: Y
2006FordF-550 Super DutyXL Cab & Chassis - Conventional 2-Door6.8L 415Cu. In. V10 GAS SOHC Naturally AspiratedPartType:Spark Plug Quantity Required:10 Note:Gap: .045; Type - Std Service Plg; 4 X 4, VIN: Y
2006FordF-550 Super DutyXL Cab & Chassis - Crew Cab 4-Door6.8L 415Cu. In. V10 GAS SOHC Naturally AspiratedPartType:Spark Plug Quantity Required:10 Note:Gap: .045; Type - Std Service Plg; 4 X 4, VIN: Y
2006FordF-550 Super DutyXL Cab & Chassis - Crew Cab 4-Door6.8L 415Cu. In. V10 GAS SOHC Naturally AspiratedPartType:Spark Plug Quantity Required:10 Note:Gap: .045; Type - Std Service Plg; 4 X 2, VIN: Y
2006FordF-550 Super DutyXL Cab & Chassis - Extended Cab 4-Door6.8L 415Cu. In. V10 GAS SOHC Naturally AspiratedPartType:Spark Plug Quantity Required:10 Note:Gap: .045; Type - Std Service Plg; 4 X 4, VIN: Y
2006FordF-550 Super DutyXL Cab & Chassis - Extended Cab 4-Door6.8L 415Cu. In. V10 GAS SOHC Naturally AspiratedPartType:Spark Plug Quantity Required:10 Note:Gap: .045; Type - Std Service Plg; 4 X 2, VIN: Y
2006FordF-550 Super DutyXLT Cab & Chassis - Conventional 2-Door6.8L 415Cu. In. V10 GAS SOHC Naturally AspiratedPartType:Spark Plug Quantity Required:10 Note:Gap: .045; Type - Std Service Plg; 4 X 2, VIN: Y
2006FordF-550 Super DutyXLT Cab & Chassis - Conventional 2-Door6.8L 415Cu. In. V10 GAS SOHC Naturally AspiratedPartType:Spark Plug Quantity Required:10 Note:Gap: .045; Type - Std Service Plg; 4 X 4, VIN: Y
2006FordF-550 Super DutyXLT Cab & Chassis - Crew Cab 4-Door6.8L 415Cu. In. V10 GAS SOHC Naturally AspiratedPartType:Spark Plug Quantity Required:10 Note:Gap: .045; Type - Std Service Plg; 4 X 4, VIN: Y
2006FordF-550 Super DutyXLT Cab & Chassis - Crew Cab 4-Door6.8L 415Cu. In. V10 GAS SOHC Naturally AspiratedPartType:Spark Plug Quantity Required:10 Note:Gap: .045; Type - Std Service Plg; 4 X 2, VIN: Y
2006FordF-550 Super DutyXLT Cab & Chassis - Extended Cab 4-Door6.8L 415Cu. In. V10 GAS SOHC Naturally AspiratedPartType:Spark Plug Quantity Required:10 Note:Gap: .045; Type - Std Service Plg; 4 X 4, VIN: Y
2006FordF-550 Super DutyXLT Cab & Chassis - Extended Cab 4-Door6.8L 415Cu. In. V10 GAS SOHC Naturally AspiratedPartType:Spark Plug Quantity Required:10 Note:Gap: .045; Type - Std Service Plg; 4 X 2, VIN: Y
Portions of the information contained in this table have been provided by 123autoparts-1

Item specifics

Condition
Brand New
Warranty
Lifetime
Quantity
1
SKU
189:SP-421

About this product

Product Identifiers

Brand
Motorcraft
Manufacturer Part Number
SP-421
eBay Product ID (ePID)
5037804587

Additional Product Features

Notes
Description--Spark Plug
Sub Type
Spark Plug
Part Type
Secondary Ignition

Item description from the seller

About this seller

123AutoParts-Store

96.1% positive Feedback•237K items sold

Joined Apr 2012
Usually responds within 24 hours
Wholesale prices and same day shipping on brand name auto parts from A1 Cardone, Dorman, Monroe, ACDelco, Standard, Airtex, Bosch, 4 Seasons, Anco, Moog, Fel-Pro, Wagner, Spectra, and many others. ...
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Detailed seller ratings

Average for the last 12 months
Accurate description
4.8
Reasonable postage costs
5.0
Postage speed
5.0
Communication
5.0

Seller feedback (74,779)

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Product ratings and reviews

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4.1
17 product ratings
  • 13 users rated this 5 out of 5 stars
  • 0 users rated this 4 out of 5 stars
  • 0 users rated this 3 out of 5 stars
  • 1 users rated this 2 out of 5 stars
  • 3 users rated this 1 out of 5 stars

Most relevant reviews

See all 16 reviews
  • by tmo_us_dhzov3tu
    20 Feb, 2024Top critical review

    Stay away from seller!!!!!

    I originally gave this product 5 stars but I need to change it after only 3 days my truck is destroyed! The spark plugs are failing when I drive up the hill to get to my home, I’ve already replaced 4 and 2 more just failed. The worst part is the ceramics on the diode broke off into my cylinder head and is destroying my engine!!! Stay away from this seller I reported them to the FOMOCO AND BBB, they are selling fake knock-off spark plugs/damaged items

    Verified purchase: YesCondition: NewSold by: whitegbc

  • by roberbowle_3
    20 Jan, 2024

    Fakes

    Very, very, very good replicas of genuine ford plugs. Actually only one sign of fakes but perhaps the most important as it in the integrity of the plug itself. Can't be to mad about the price. Bassicaly just bought cheap plugs with the potential illusion of true genuine plugs.

    Verified purchase: YesCondition: NewSold by: kingofthe73

  • by jort3205
    16 Feb, 2024

    Great products

    Price main reason for purchasing. Direct fit noticed difference once installed.

    Verified purchase: YesCondition: NewSold by: whitegbc

  • by 451149
    21 Jul, 2023

    I enjoy good product

    great fit

    Verified purchase: YesCondition: NewSold by: total-quality-shop

  • by sandranay2
    05 Oct, 2023

    Good quality

    Loved the price for good quality and early shipment.

    Verified purchase: YesCondition: NewSold by: kendely

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