NGK DR7EA Standard Spark Plug
- Copper core, standard series plug
- 14 mm thread size
- 99 percent pure alumina silicate insulator
- Triple gasket seal, corrugated ribs
- Cold rolled threads to protect the head
- Long OEM cross-reference list, car and motorcycle makes
- 1.44 ounces item weight
Last refreshed Oct 2, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A copper core standard plug with a very long cross-reference list covering car and motorcycle makers. Reach and heat range are not stated, so confirm the part number before buying.
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ASIN: B000XBBBAYModel: 7839Category: Spark Plugs
Sizes Available
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Overview
A buyer replacing plugs in an engine that calls for this number gets a copper core NGK standard plug. The insulator is made of alumina silicate with a longer nose, and a triple gasket seal is described as preventing fuel leakage.
NGK builds the plug with a glass and carbon resistor, corrugated ribs and cold rolled threads. The listing lists no heat range, reach or gap, so the cross-reference numbers do the work of matching the plug.
Who it's for
A DIY owner or shop replacing plugs on an engine that uses this number can use the cross-reference list to confirm the match. Anyone wanting a longer service interval from a finer tip should choose a different plug type.
Pros and cons
- Copper core conductivity
- Triple gasket seal
- Corrugated ribs against flashover
- Cold rolled threads
- Heat range not listed
- Reach and gap not listed
- Sold as a single plug
- Copper construction only
Performance notes
The copper core moves heat away from the tip and conducts well, and the resistor suppresses electrical noise. The corrugated ribs on the insulator reduce flashover, and the longer insulator nose is described as reducing fouling.
Specifications
| Brand | NGK |
|---|---|
| Model | 7839 |
| Dimensions & fit | |
| Thread size | 14 mm |
| Weight | 1.44 ounces |
| Construction & materials | |
| Core material | Copper |
| Top material | Copper |
| Insulator | 99 percent pure alumina silicate |
| Compatibility & installation | |
| Vehicle type | Car, Motorcycle |
| Warranty & support | |
| Warranty | Includes manufacturer provided warranty |
| Other details | |
| Number of items | 1 |
| Fit type | Vehicle Specific Fit |
Frequently asked questions
How do I install the NGK DR7EA spark plug?
The listing gives no gap or torque values. It does mention cold rolled threads to inhibit cylinder head damage, so follow the engine's service manual for torque.
Which engines use the NGK DR7EA?
The listing gives a cross-reference list including Toyota, Honda, Yamaha, Suzuki, Kawasaki and Aprilia numbers rather than a vehicle list.
Is the NGK DR7EA an iridium plug?
No. The core and top material are copper.