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Ngk pmr7a platinum spark plug (4259)
Ngk pmr7a platinum spark plug (4259) - image 2

NGK PMR7A Platinum Spark Plug (4259)

RRP. £37.94£21.51SAVE £16.43 (43%)

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SKU: NGK-4259 Categories: , , , , PP-RM5

NGK PMR7A Spark Plug – Stock No. 4259

The NGK PMR7A is a compact, high-quality resistor spark plug designed for reliable ignition in modern petrol engines. It delivers a strong, consistent spark, helps cold starts, and supports stable idle and smooth acceleration. Its projected tip places the spark deeper in the chamber for efficient combustion.

Use this plug as a like-for-like replacement where PMR7A is specified. If you have performance upgrades, match the heat range to your setup to avoid fouling (too cold) or overheating (too hot).

Part number PMR7A
NGK stock number 4259
GTIN 087295142592
Category 686 – Spark Plug
Type Resistor, projected tip
Heat range 7 (NGK scale)
Thread diameter 10 mm
Thread pitch 1.0 mm
Thread reach 12.7 mm
Hex size 16 mm
Seat type Flat seat with gasket
Centre electrode Fine-wire platinum
Ground electrode Nickel alloy
Integral resistor Yes (for RFI/EMI suppression)
Factory gap Pre-gapped – check and adjust to OEM spec
  • Improves ignition stability and throttle response.
  • Platinum centre resists wear for consistent performance over time.
  • Resistor design reduces electrical noise that can affect the ECU.

Fitment guidance

This plug is used in selected modern petrol engines and motorcycles that specify NGK PMR7A. Always confirm with the vehicle lookup on our site or see the Vehicle Fitment tab before ordering.

Note: Torque to the manufacturer’s specification. Over- or under-tightening can damage the cylinder head or the plug. Check gap and heat range against your engine’s requirements, especially on tuned engines.

The price displayed is for a single plug, please add the desired amount to your basket.

Additional Information

Weight 0.05 kg
Dimensions 10 × 3 × 3 cm
Brand

NGK-4259 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

ALFA ROMEO (2 Models)
155 (167_) 2.0 16V Turbo Q4 (167.A2B, 167.A2C, 167.A2E) (AR 67203) | 186hp
Petrol 1995cc | Saloon | 1992 - 1997
155 (167_) 2.0 16V Turbo Q4 (167.A2B, 167.A2C, 167.A2E) (AR 67203) | 190hp
Petrol 1995cc | Saloon | 1992 - 1997

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.