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NGK IGR7A Laser Iridium Spark Plug (6687)
Original price was: £30.78.£19.89Current price is: £19.89.
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NGK IGR7A (Stock No. 6687) Laser Iridium Spark Plug
The NGK IGR7A is a high-quality iridium spark plug designed for stable ignition under heat and load. It improves cold starts, throttle response, and combustion efficiency. It is built for long life with consistent performance.
Iridium uses a very hard, heat-resistant metal on the centre tip. This needs less voltage to spark and keeps performance steady over time.
Use our vehicle lookup to confirm fitment for your engine, or check the Vehicle Fitment tab for full details.
- Strong, reliable spark for smoother idle and better response
- Fine-wire iridium tip for efficient ignition and long service life
| Part Number | IGR7A |
| NGK Stock Number | 6687 |
| Category | 686 – Spark Plug |
| GTIN | 087295166871 |
| Type | Laser Iridium (iridium centre, platinum ground pad) |
| Heat Range | 7 (NGK scale) |
| Resistor | Yes (RFI/EMI suppression) |
| Thread Diameter | M14 x 1.25 |
| Reach (thread length) | 19 mm |
| Hex Size | 16 mm |
| Seat Type | Gasket |
| Projection | Projected insulator |
| Gap | 0.8 mm (preset) |
| Centre Electrode | Fine-wire iridium |
| Ground Electrode | Platinum pad, tapered cut |
| Terminal | Solid (non-removable) |
| Fuel Type | Petrol |
Fitment Guidance
This plug is used in selected high-performance European petrol engines. Use the site’s vehicle lookup to confirm fitment for your specific car, or see the Vehicle Fitment tab for full details.
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-6687 Confirmed Fitment
Our team haven't provided any fitment data for this product yet, please get in touch or check back later!
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.
We're tuners too!
Our staff are car enthusiasts, we understand the need for speed... This includes getting your orders out the door as quickly and securely as possible!
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
In the words of the Vehicle Standards Agency (VCA), type approval provides "confirmation that production and samples of a design will meet specified performance standards".
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.