Ignitions and Electrical› Ignition Components

Motorcraft

Spark Plug

$9.29

SKU: SP-450

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The Motorcraft SP-450 is a spark plug designed for quick starts and enhanced fuel economy. It is the same part installed when the engine originally rolled off the assembly line.
Show original supplier description
The Motorcraft SP-450 spark plug is an original equipment replacement part, ensuring the same quality and fitment as when your vehicle's engine was first manufactured. Drivers can expect quick starts, enhanced fuel economy, and smoother acceleration, contributing to the overall efficiency and performance of their vehicle. The plug features a tapered seat type for a secure and precise fit, minimizing the chance of leaks or misfires, and is built to meet Ford's rigorous standards for durability and long-lasting performance. Constructed with a copper core center electrode and an Inconel side electrode, the SP-450 offers reliable ignition. Its specifications include a 5/8-inch hex size, a standard insulator type, and a manufacturer heat range of 5. The spark plug has a reach of .460 inches and a thread diameter of 14 mm, with a resistor feature to prevent electrical interference. Motorcraft spark plugs like the SP-450 provide excellent value by helping maintain engine efficiency and reliability during routine maintenance or replacements. Whether you are performing a standard tune-up or replacing worn components, this part ensures your engine operates as intended, offering confidence and dependable performance for your Ford or Lincoln vehicle.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandMotorcraft
Part NumberSP-450
CategoryIgnitions and Electrical

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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