AC Delco 41-962 Iridium Spark Plug, Interchangeable with NGK PTR5D-10

The AC Delco 41-962 is an iridium spark plug built for reliable cold starting, quick acceleration, and smooth engine performance. Iridium construction gives the electrode a high melting point and allows for a smaller, more efficient electrode design compared to standard nickel plugs, which supports consistent ignition even in cold-start conditions. The electrode is laser-welded for durability under sustained heat and vibration.

This spark plug uses a one-piece, fired-in suppressor seal that blends three types of glass to form a gas-tight seal. That seal helps reduce radio frequency and engine interference, regulates spark plug energy delivery, and protects the plug against compression pressures for long service life. The AC Delco 41-962 is interchangeable with the NGK PTR5D-10, making it a straightforward replacement option where that cross-reference applies.

Specifications

• Brand: AC Delco
• Manufacturer Part Number: 41-962
• UPC: 808709010517
• Electrode Material: Iridium
• Seal Type: One-piece, fired-in suppressor seal (three-glass blend)
• Construction: Laser-welded electrode
• Weight: 0.1 pounds
• Interchangeable With: NGK PTR5D-10

Fitment

No specific vehicle or engine fitment is listed for this part number; confirm application using the NGK PTR5D-10 cross-reference below.

Replaces (OEM)

• NGK PTR5D-10

Frequently Asked Questions

What is the AC Delco 41-962 spark plug made of? The AC Delco 41-962 uses an iridium electrode, chosen for its high melting point and ability to support a smaller, more efficient electrode design.

Is the AC Delco 41-962 interchangeable with any other spark plug? Yes, the AC Delco 41-962 is interchangeable with the NGK PTR5D-10.

How much does the AC Delco 41-962 spark plug weigh? This spark plug weighs 0.1 pounds.

Does the AC Delco 41-962 help with cold starting? Reliable cold starting is a designed benefit of the AC Delco 41-962, thanks to its iridium construction and efficient electrode design.

What kind of seal does the AC Delco 41-962 use? A one-piece, fired-in suppressor seal that blends three types of glass to create a gas-tight seal is used in the AC Delco 41-962.

Does the seal on this spark plug reduce radio interference? Yes, the gas-tight suppressor seal in the AC Delco 41-962 helps reduce radio frequency and engine interference.

Is the AC Delco 41-962 durable under high engine temperatures? The iridium electrode has a high melting point and is laser-welded, supporting durability under sustained heat in the AC Delco 41-962.

What is the UPC for the AC Delco 41-962 spark plug? The UPC for the AC Delco 41-962 is 808709010517.

Does the AC Delco 41-962 spark plug help protect against compression pressures? The suppressor seal on the AC Delco 41-962 is designed to protect against compression pressures, contributing to a longer service life.

Is the AC Delco 41-962 a genuine AC Delco part? Yes, the 41-962 is a genuine AC Delco iridium spark plug, not an aftermarket copy.