NGK LZKAR7B Laser Iridium Spark Plug (5942)
Original price was: £9.29.£6.05Current price is: £6.05.
NGK LZKAR7B Spark Plug – Stock No. 5942
The NGK LZKAR7B is a high quality, resistor-type spark plug designed for modern petrol engines. It delivers a clean, reliable spark for stable idle, smooth acceleration and consistent performance. It also helps cold starts and reduces misfires under load.
Built to OE standards, it suits long service intervals. The long-reach M12 design fits compact cylinder heads often found in newer engines.
Do not force the gap on fine-wire plugs. Minor adjustment only, if specified by the vehicle manufacturer.
Why it matters
- Strong spark for better combustion and throttle response
- Resistor design reduces electrical noise that can affect sensors and the ECU
- Precise heat range for reliable running in daily and spirited use
| Part number | LZKAR7B |
|---|---|
| NGK stock number | 5942 |
| GTIN | 087295159422 |
| Category | 686 – Spark Plug |
| Thread diameter | M12 x 1.25 |
| Reach (thread length) | 26.5 mm |
| Hex size | 14 mm |
| Seat type | Flat seat with gasket |
| Heat range | 7 (NGK scale) |
| Electrode design | Fine-wire precious metal centre with ground pad |
| Resistor | Yes |
| Pre-set gap | Typically 0.8 mm to 1.1 mm (check vehicle spec) |
Fitment guidance
Use the vehicle lookup on our site or check the Vehicle Fitment tab to confirm this exact plug for your engine.
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-5942 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
All items marked as available for 'Express Delivery' are dispatched next working day before 3pm.
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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
Progressive Parts operates a 14 day return period from the date of delivery for unused products.
Follow the returns process below for our team to generate you an RMA ID and instruct you to return the goods.
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Stock at Progressive Parts
Delivery timescales are given as estimates in good faith, but cannot be taken as precise or exact information. We highly advise against booking installation/workshop time or engaging in preparatory work until you've received and inspected the goods.
What do our stock statuses mean?
1+ IN STOCK in green stock is readily available in one of our warehouses for express delivery (at the time of viewing).
LOW STOCK in green means we're running low! 1 or 2 left on the shelf so act fast. Over evenings, weekends and bank holidays this stock can move quickly so please bear this in mind.
0 IN STOCK in blue means our primary warehouse does not have unallocated stock, but our UK partners do. Often these can be shipped quickly and efficiently. You'll be notified via the Track My Order page if further delays are unavoidable.
MADE TO ORDER in blue means we've partnered with a supplier which primarily makes their products to order. It's not on our shelf, but your order goes into production immediately.
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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In some instances, extended lead times are unavoidable. This is as labour-intensive and frustrating for us as it is for you, please know we are doing our best to facilitate your modification goals. Abuse of our staff or systems will not be tolerated.
Thank you, Team PP
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.