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  • Motorcraft Spark Plug SP521X (AGSF22F1X)
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Motorcraft Spark Plug SP521X (AGSF22F1X)
Motorcraft Spark Plug SP521X (AGSF22F1X)
Load image into Gallery viewer, Motorcraft Spark Plug SP521X (AGSF22F1X)
Load image into Gallery viewer, Motorcraft Spark Plug SP521X (AGSF22F1X)

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Motorcraft Spark Plug SP521X (AGSF22F1X)

MOTORCRAFT
ELE2113
In stock
$8.73 $7.99
Description The Motorcraft Spark Plug SP521X (AGSF22F1X) is an OEM-quality replacement spark plug designed to meet...
$7.99
Motorcraft Spark Plug SP521X (AGSF22F1X)
Description

Description

The Motorcraft Spark Plug SP521X (AGSF22F1X) is an OEM-quality replacement spark plug designed to meet strict Ford engineering standards for performance, durability, and reliability. Engineered specifically for 5.4L V8 and 6.8L V10 Ford engines, this spark plug helps maintain optimal combustion efficiency and consistent ignition performance.

With a .054 pre-set gap and advanced design, the SP521X supports smooth engine operation, reduces misfires, improves fuel efficiency, and helps meet emissions standards. It is also interchangeable with SP-521, making it a flexible replacement option for various Ford applications.

Built with high-quality materials, Motorcraft spark plugs are designed to deliver dependable performance over a typical service life of 60,000 to 100,000 miles, making them ideal for both commercial and personal vehicles.

Features

  • Genuine Motorcraft spark plug
  • Part Number: SP521X / AGSF22F1X
  • Designed for Ford 5.4L V8 and 6.8L V10 engines
  • Pre-gapped at .054
  • Helps reduce misfires and improve combustion efficiency
  • Supports fuel economy and emissions compliance
  • Meets Ford OEM engineering standards
  • Interchangeable with SP-521
  • Long service interval: 60,000–100,000 miles
  • Durable construction for reliable long-term performance

Technical Specifications

  • Brand: Motorcraft
  • Gap: .054
  • Dimensions: 1.00 L x 1.00 W x 3.38 H in
  • Weight: 0.10 lb

Fitment

Ford

  • E-150: 2009–2014 – V8 5.4L
  • E-250: 2009–2014 – V8 5.4L
  • E-350 Super Duty: 2009–2019 – V8 5.4L / V10 6.8L
  • E-450 Super Duty: 2009–2019 – V8 5.4L / V10 6.8L
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Shipping

Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.

Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.

Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.

Returns

Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.

Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.

Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.

Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).

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