NGK PTR5D-10 Laser Platinum Spark Plug (3784)
Original price was: £12.77.£8.24Current price is: £8.24.
NGK PTR5D-10 Spark Plug – NGK Stock 3784
The NGK PTR5D-10 is a high-quality platinum spark plug designed for reliable ignition and long service life. It delivers a clean, stable spark that helps cold starts, smooth idle, and consistent performance. The platinum centre electrode resists wear, so the gap stays accurate for longer intervals.
Use this plug where a 1.0 mm gap and NGK heat range 5 are specified by the vehicle manufacturer. If unsure, use the site’s vehicle lookup or check the Vehicle Fitment tab.
- Platinum tip for long life and stable spark
- Resistor design to reduce electrical interference
- Set 1.0 mm factory gap for OE-style performance
- Built to NGK standards for sealing, heat control, and durability
| Part Number | PTR5D-10 |
| NGK Stock Number | 3784 |
| GTIN | 087295137840 |
| Category | 686 – Spark Plug |
| Thread Diameter | 14 mm |
| Thread Reach | 19 mm |
| Seat Type | Taper seat |
| Hex Size | 16 mm (5/8 inch) |
| Heat Range | NGK 5 |
| Resistor | Yes |
| Gap | 1.0 mm |
| Centre Electrode | Platinum tip |
| Ground Electrode | Single |
Fitment guidance
This plug suits petrol engines that require a 14 mm taper-seat plug with a 19 mm reach, NGK heat range 5, and a 1.0 mm gap. Specifications vary by engine. Always confirm with the vehicle lookup or the Vehicle Fitment tab before ordering.
Installation notes
– Check and adjust gap only if the manufacturer allows it for platinum plugs. Handle carefully to avoid damaging the fine tip.
– Clean, dry threads only. Start by hand and tighten to the correct angle or torque per the vehicle manufacturer. Do not overtighten.
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-3784 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.
If you order contains a mixture of 'In Stock', 'Stock Order' or 'Backorder' items, your order may be split to optimise logistics and improve delivery times.
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
For accurate pricing, please visit the website checkout which will automatically generate a shipping quote to your country.
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.
All international shipments may be subject to cross-border inspections by customs authorities while customs policies vary widely from country to country. You must meet any additional charges for customs clearance and we recommend that you contact your local customs office for further information.
DELIVERY INFORMATION
Returns
Progressive Parts operates a 14 day return period from the date of delivery for unused products.
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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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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.