NGK LMAR9E-J Spark Plug (6884)
Original price was: £30.89.£19.30Current price is: £19.30.
NGK LMAR9E-J Spark Plug (Stock 6884)
NGK’s LMAR9E-J is a high-quality resistor spark plug designed for stable ignition under high load and high temperature. It helps the engine start cleanly, idle smoothly, and pull hard through the rev range. It resists fouling and misfire, which protects power and keeps emissions in check. Heat range 9 suits high-performance engines that run hot. It will not add power on its own, but it helps your engine deliver consistent performance.
- Reliable spark at high RPM and under boost or heavy load
- Resistor design cuts electrical noise that can affect the ECU
- Durable nickel alloy electrodes for long service life
Technical specifications
| Part number | LMAR9E-J |
| NGK stock number | 6884 |
| Category | 686 – Spark Plug |
| GTIN | 87295168844 |
| Thread diameter | 10 mm |
| Thread pitch | 1.0 mm |
| Reach (thread length) | 26.5 mm |
| Seat type | Flat seat with gasket |
| Resistor | Yes |
| Heat range | 9 (cold) |
| Centre/ground electrode material | Nickel alloy |
| Factory gap | Pre-gapped – set to vehicle spec |
| Recommended installation torque | 10-12 Nm for 10 mm threads (use OEM spec) |
Fitment guidance
This plug pattern is commonly used in modern high-performance engines with 10 mm long-reach plugs. Use the site’s vehicle lookup to confirm fitment, or check the Vehicle Fitment tab for full details. Only use heat range 9 if specified by your engine or tuning setup.
Notes on installation
Always install on a cold engine. Check and adjust the gap to your manufacturer’s spec. Use a new gasket and tighten to the correct torque. Do not apply anti-seize unless the OEM procedure specifies it.
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-6884 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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Out of stock items are sourced from our extended inventory and supplier inventory where possible. These may require manufacturing or carry extended lead times which we endeavour to alert you about if the website hasn't already provided an estimated delivery timescale.
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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1+ IN STOCK in green stock is readily available in one of our warehouses for express delivery (at the time of viewing).
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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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For emissions components this encompasses noise, emissions and balanced back pressure, which have a strong influence on maintaining engine performance (power), and fuel efficiency. Type approval ensures that an aftermarket component will reach, or exceed the performance standard of the corresponding OE part.
Type-approval then, is a certain guarantee that an end user will receive a product of OE equivalent performance attributes.
Products on the Progressive Parts website that meet this approval will be clearly marked or labelled EC or ECE approved.