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- NGK KR8DI Spark Plug (4742)
- $31.64 $31.64 (Exc. VAT) (Exc. VAT) (Inc. VAT) (Inc. VAT)
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NGK Iridium Spark Plugs
NGK iridium spark plugs currently represent the highest-quality technological solution. They feature an iridium-alloy on the middle electrode welded on in a special process using laser. One of the worlds hardest metals, the precious metal iridium starts melting at a temperature of 2450°c and is therefore very resistant to spark erosion. By using it, the service life is doubled on average in comparison to standard nickel spark plugs.
The improved throttle response, superior anti-fouling and high-ignitability makes Iridium IX ideal for the performance enthusiast. Iridiums extremely high melting point is perfectly suited to todays high-temperature engines, delivering outstanding acceleration, fuel efficiency and durability.
- Fine iridium tip ensures high durability and a consistently stable spark
- Trivalent metal plating for superior anti-corrosion and anti-seizing properties
- Outstanding acceleration, high fuel efficiency and durability
NGK are the worlds number 1 motorcycle OEM fitted spark plug
From passenger cars and bikes to Formula 1 and motorcycle racing, NGK Spark Plugs has established itself as a heavily relied upon original equipment manufacturer (OEM). With its clear commitment to delivering the highest quality and continuously raising the bar, NGK Spark Plugs is the obvious brand of choice for a wide range of vehicle manufacturers.
Manufacturer Part No. (MPN): 4742
Barcode: 087295147429
| Box Qty: | SINGLES |
| Material: | Iridium |
Fitment Summary
Compatible with 54 models (yearly).
- KTM: SM 990 Supermoto, Super Duke 990R
- Polaris: Ranger 500, Sportsman 500, Sportsman 500 X2 EFI
- SeaDoo: FISH PRO 1630 130-170, FISH PRO 1630170, GTi 1630130, GTi 1630170, GTi PRO 1630130, GTR 1630230, GTX 1630 170-230-30, GTX PRP 1630 iBRi 130, RXPX 1630 RS 300, RXTX 1630 RS 300, WAKE PRO 1630 170-230
Our own vehicle selector shows multiple compatible spark plugs but you can also use the dedicated NGK Spark Plug finder here: www.ngkpartfinder.co.uk
Safety Data Sheets (SDS) can be downloaded from the 'Downloads' tab on a product page. When not available, please contact us or refer to the manufacturers website linked to at the bottom of each brand page.
Delivery
Regular Delivery Costs & Times
Trade
Standard Delivery
Orders will be despatched as follows: To business addresses only; £9.95 (Exc VAT) delivery charge (subject to change depending on account level); Free delivery with net order values of £100 and over (Exc VAT) to the UK Mainland; Orders to N. Ireland/Eire/Isle of Man/Scilly Isles by arrangement; other destinations phone for details; Typical delivery times of 1-2 working days.
Where possible, the Company will endeavour to meet special delivery requirements subject to any additional cost being borne by the Purchaser
Unfortunately, we do not delivery to addresses outside of mainland UK without prior agreement. Without prior agreement you may place an order for Products from outside the UK, but this order must be for delivery to an address in mainland UK unless arranged otherwise prior to your order.
All third party deliveries will carry a charge, the minimum charge will be £9.95 (Exc. VAT).
Pallet Charges
Larger items may incur additional carriage charges, including but not limited to 4x4 and SUV tyres.
An overview of charges per pallet for each region is available to view here: https://www.google.com/maps/d/viewer?mid=11ydN7ZJNHKHf9Ygd0ih_L6-U1dMq31A
Consumer
Click & Collect Only
Select a collection point from our network of available dealers. You will be notified by the chosen dealer once your order is ready to collect, estimated time is 2-3 days (depending on national holidays and dealer opening hours).
Any returns will be handled by the collection point.
- Free for orders over £100
- £11.95 fee for orders below £100
Read our full delivery policy here
Returns
Trade
Please complete the Trade Returns form or contact our Sales Office
Consumer (Click & Collect)
Your click and collect location will handle any returns for you. Please contact the original collect point/dealer to discuss returns and ensure the item is returned to that location..
Alternatively, please use the Returns form.
If you experience issues when attempting to contact the collection point/dealer, please contact us.
| Make | Model | Engine/Variant | Year | Notes |
| SeaDoo | FISH PRO | 1630 130-170 | 2022 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | FISH PRO | 1630 170 | 2020 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | FISH PRO | 1630 170 | 2021 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | GTi | 1630 130 | 2021 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | GTi | 1630 130 - SE | 2020 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | GTi | 1630 170 | 2020 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | GTi | 1630 170 | 2021 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | GTi | 1630 170 | 2022 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | GTi PRO | 1630 130 - SE | 2020 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | GTR | 1630 230 | 2020 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | GTR | 1630 230 | 2021 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | GTR | 1630 230 | 2022 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | GTX | 1630 170-230-30 - Ltd | 2020 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | GTX | 1630 170-230-30 - Ltd | 2021 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | GTX | 1630 170-230-30 - Ltd | 2022 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | GTX PRP | 1630 iBRi 130 | 2020 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | GTX PRP | 1630 iBRi 130 | 2021 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | GTX PRP | 1630 iBRi 130 | 2022 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | RXPX | 1630 RS 300 | 2020 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | RXPX | 1630 RS 300 | 2021 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | RXPX | 1630 RS 300 | 2022 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | RXTX | 1630 RS 300 | 2020 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | RXTX | 1630 RS 300 | 2021 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | RXTX | 1630 RS 300 | 2022 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | WAKE PRO | 1630 170-230 | 2020 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | WAKE PRO | 1630 170-230 | 2021 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| SeaDoo | WAKE PRO | 1630 170-230 | 2022 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.7 |
| Polaris | Ranger | 500 | 2006 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| Polaris | Ranger | 500 | 2007 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| Polaris | Ranger | 500 | 2008 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| Polaris | Ranger | 500 | 2009 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| Polaris | Ranger | 500 | 2011 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| Polaris | Ranger | 500 | 2012 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| Polaris | Ranger | 500 | 2013 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| Polaris | Sportsman | 500 | 2001 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| Polaris | Sportsman | 500 | 2002 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| Polaris | Sportsman | 500 | 2003 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| Polaris | Sportsman | 500 | 2004 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| Polaris | Sportsman | 500 | 2005 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| Polaris | Sportsman | 500 | 2006 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| Polaris | Sportsman | 500 | 2007 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| Polaris | Sportsman | 500 | 2008 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| Polaris | Sportsman | 500 X2 EFI | 2008 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| KTM | SM | 990 Supermoto | 2009 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| KTM | SM | 990 Supermoto - R | 2010 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| KTM | SM | 990 Supermoto - R | 2011 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| KTM | Super Duke | 990 R | 2007 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| KTM | Super Duke | 990 R | 2008 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| KTM | Super Duke | 990 R | 2009 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| KTM | Super Duke | 990 R | 2010 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| KTM | Super Duke | 990 R | 2011 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| KTM | Super Duke | 990 R | 2012 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| KTM | Super Duke | 990 R | 2013 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |
| KTM | Super Duke | 990 R | 2014 | Plugs Required: 1 | Cylinders: 1 | Gap (mm): 0.8 |