NGK ZGR5A Standard Spark Plug (5839)
Original price was: £7.18.£3.38Current price is: £3.38.
NGK ZGR5A Spark Plug – Stock No. 5839
The NGK ZGR5A is a reliable, road-ready spark plug for petrol engines. It uses a copper core for better heat control and a durable nickel alloy tip. The built-in resistor reduces radio interference and helps the ignition system run cleanly.
You can expect smooth cold starts, steady idle, and consistent performance mile after mile. It is a direct replacement where ZGR5A is specified.
Why it matters
- Stable spark for dependable starting and clean combustion
- Resistor design helps protect electronics and reduces radio noise
- Copper core improves heat dissipation for consistent performance
Technical specifications
| Part number | ZGR5A |
| NGK stock number | 5839 |
| Category | 686 – Spark Plug |
| GTIN | 087295158395 |
| Thread diameter | 14 mm |
| Thread pitch | 1.25 |
| Reach (thread length) | 19 mm |
| Hex size | 16 mm |
| Seat type | Gasket |
| Resistor | Yes |
| Heat range | 5 (NGK scale) |
| Electrode material | Nickel alloy with copper core |
| Electrode configuration | Standard J-gap |
| Factory gap | 0.8 mm (check and adjust to vehicle spec) |
| Terminal type | Standard SAE |
Fitment guidance
Use this plug only in engines that specify NGK ZGR5A. Vehicle fit can vary. Use our vehicle lookup to confirm, or check the Vehicle Fitment tab for full details.
Note: Always confirm gap and torque to your vehicle’s service manual. Over-tightening can damage the cylinder head.
The price displayed is for a single plug, please add the desired amount to your basket.
| Weight | 0.05 kg |
|---|---|
| Dimensions | 10 × 3 × 3 cm |
| Brand |
NGK-5839 Confirmed Fitment
Please note, this information is a combination of supplier provided compatibility data and our workshop expertise. While every effort has been made to ensure the accuracy of this information Progressive Parts Ltd are not liable for abnormalities or inaccurate data. Customers are wholly responsible for checking fitment for their vehicle. More information is available from our Terms & Conditions
UK Shipping
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DELIVERY INFORMATION
International Shipping
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If your delivery address is outside of the UK, local tax will be removed and you will have to pay import duties and taxes when the shipment reaches your country.
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DELIVERY INFORMATION
Returns
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Stock at Progressive Parts
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0 IN STOCK in orange means everybody we work with is unfortunately out of stock. Stock is not available in the UK. The best course of action is to place an order to create an allocation from the next batch arriving.
OUT OF STOCK in red. This product is unavailable to order, for whatever reason we're unable to obtain stock or there is an issue with supply/lead times.
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