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NGK BP5ET-10 Nickel Spark Plug (5156)
Original price was: £7.40.£4.84Current price is: £4.84.
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NGK BP5ET-10 Spark Plug – Triple Ground, 1.0 mm Gap (Stock No. 5156)
The NGK BP5ET-10 is a copper-core spark plug with a projected tip and triple ground electrodes. It is designed for stable ignition and long service life in petrol engines that specify a non-resistor plug with a 1.0 mm gap.
Triple ground electrodes help maintain a clean, reliable spark across a wider range of conditions. The copper core improves heat transfer for consistent performance. The projected tip places the spark in a better position in the combustion chamber for smoother idle and throttle response.
Important: This is a non-resistor plug. If your vehicle requires resistor plugs (often marked with an R in the part code), choose the correct resistor type to avoid possible electrical interference.
Where it fits
Suitable for many older petrol engines that call for:
– 14 mm thread, 19 mm reach, flat gasket seat, projected tip, non-resistor, triple ground electrodes, 1.0 mm gap
Use our vehicle lookup to confirm fitment, or check the Vehicle Fitment tab for full details.
| Part Number | BP5ET-10 |
| NGK Stock Number | 5156 |
| GTIN | 087295151563 |
| Category | 686 – Spark Plug |
| Thread Diameter | 14 mm |
| Thread Pitch | 1.25 |
| Reach (Thread Length) | 19 mm |
| Hex Size | 20.8 mm (13/16 in) |
| Seat Type | Flat seat with gasket |
| Heat Range | 5 (NGK scale) |
| Spark Gap | 1.0 mm |
| Resistor | No |
| Tip Configuration | Projected insulator |
| Electrodes | Triple ground electrodes |
| Centre Electrode | Nickel alloy with copper core |
| Terminal Type | Solid terminal |
| Tightening Torque (new plug, gasket seat) | 18-25 Nm |
Why choose this plug
– Strong ignition stability for everyday use
– Good durability thanks to triple ground design
– Helps maintain smooth idle and clean combustion
Set expectations: this is a quality OE-style plug. It improves consistency and reliability. It is not a racing plug and will not add power by itself, but it supports healthy engine performance when specified 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-5156 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.
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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.