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The Green Spark Plug Company£13.41Visit shop Ngk Pfr5j-11 4642 Spark Plug Platinum Pfr5j11 New Ngk-Pfr5j-11
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This NGK 4642 Spark Plug is designed for vehicle owners seeking reliable engine performance and extended service life. Its key benefit is the platinum center electrode, which ensures consistent, powerful sparks for efficient fuel combustion. A potential caveat is that it is sold individually, requiring customers to verify the correct quantity needed for their specific vehicle. This spark plug features a platinum middle electrode, a 1.1mm electrode gap, and a 14mm external thread, designed for optimal ignition performance.
| Model Part Number | PFR5J-11 |
|---|---|
| Brand | NGK |
This spark plug is sold individually. You will need to determine the number of cylinders your engine has and purchase that quantity. Consult your vehicle's owner's manual for the exact number of spark plugs required.
The electrode gap for the NGK 4642 is precisely set at 1.1 mm.
This refers to the spark plug's built-in resistor (5 kOhm) which helps to suppress radio frequency interference (RFI) that can disrupt your vehicle's electronic systems, such as the radio or onboard computers.
Yes, if you have basic automotive tools and knowledge. It involves removing the old plug and installing the new one. Always refer to your vehicle's service manual for specific procedures and torque specifications.
Platinum spark plugs, like the NGK 4642, offer significantly longer lifespan and maintain a more consistent gap over time compared to standard copper or even iridium plugs, leading to sustained optimal engine performance.
A 16 mm spanner or socket is required to install or remove this spark plug.
Ensure the spark plug wire or coil pack is securely connected. Verify the spark plug was tightened to the correct torque and not cross-threaded. Check that the correct spark plug model was installed.
Confirm all spark plug connections are secure. Re-check compatibility of the installed spark plug for your vehicle. Ensure no debris was introduced into the cylinder during installation.
Verify the spark plugs were gapped correctly (1.1mm for this model) if adjustment was needed. Ensure all plugs are properly installed and torqued. An engine misfire could also cause poor fuel economy; re-check connections and plug condition.
Setup: Replacing spark plugs is a maintenance task generally recommended for individuals with basic automotive knowledge. Always ensure the engine is cool before beginning. Disconnect the spark plug wires or coil packs one at a time to avoid mixing them up. Use a spark plug socket with an extension to carefully remove the old plug. Apply a small amount of anti-seize compound to the threads of the new NGK 4642 spark plug before installation. Thread the new plug in by hand initially to avoid cross-threading, then tighten gently with a wrench to the manufacturer's recommended torque specification (refer to your vehicle's service manual). Reconnect the spark plug wire or coil pack.
Compatibility: The NGK 4642 (PFR5J-11) is designed to fit specific vehicle makes and models. Always consult your vehicle's owner's manual or a reliable parts catalog to confirm compatibility using the part number (4642) and its cross-references (04887032, 18814-11051, 90098-66064, MS851335).
Care: Spark plugs are not typically user-serviceable beyond replacement. Ensure the area around the spark plug wells is clean before removal to prevent debris from entering the cylinder. Inspecting old spark plugs can offer insights into engine health (e.g., fouling, wear patterns), but the plugs themselves are replaced when worn.
