Ignitions and Electrical› Ignition Components

Motorcraft

Iridium Spark Plug

$9.79

SKU: SP493X

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 SP493X is an iridium spark plug designed for various Ford, Lincoln, and Mercury vehicles. It features a copper core and a 14mm x 1.25mm thread size.
Show original supplier description
Motorcraft spark plugs are specifically matched to vehicle engines to enhance durability, prevent misfires, improve fuel economy, and adhere to emission standards. This spark plug is suitable for a wide range of applications, including many Ford, Lincoln, and Mercury vehicles equipped with conventional distributor-equipped and coil-on-plug ignition systems. Common fitments include models from 1988 through 2013, such as the Ford E-150, E-250, F-150, and Expedition, as well as the Mercury Grand Marquis. When replacing spark plugs, it is crucial to ensure compatibility with your specific vehicle's engine. While the SP493X is a direct replacement for many applications, always verify fitment for your year, make, model, and engine type. The "X" designation in the part number typically indicates a slight variation or enhancement compared to non-X versions, ensuring optimal performance for specified engines.

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

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandMotorcraft
Part NumberSP493X
CategoryIgnitions and Electrical

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

(760) 282-4645 Instagram Google

Buy with Confidence

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.

View Full Return Policy

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.

View Full Shipping Policy