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NGK IZFR5R7G Laser Iridium Spark Plug (94123)
RRP. £21.84£16.56SAVE £5.28 (24%)
NGK IZFR5R7G Laser Iridium Spark Plug – 94123
The NGK IZFR5R7G is a Laser Iridium spark plug designed for precise ignition, stable idle, and long service life. The fine-wire iridium tip needs less voltage to spark, which helps cold starts and reduces misfires under load. A platinum-tipped ground electrode resists wear, keeping performance consistent over many miles.
Use this plug when you want dependable ignition and OE-level reliability, with improved durability over standard copper plugs. It suits petrol engines that specify a 14 mm, projected-tip, long-reach plug with an NGK heat range of 5. For exact fitment, use the vehicle lookup or check the Vehicle Fitment tab.
| Part Number | IZFR5R7G |
| NGK Stock Number | 94123 |
| GTIN | 87295941232 |
| Category | 686 – Spark Plug |
| Technology | Laser Iridium (fine-wire iridium centre, platinum ground pad) |
| Resistor | Yes |
| Heat Range (NGK) | 5 |
| Thread Diameter | 14 mm |
| Thread Reach | 19 mm |
| Hex Size | 16 mm |
| Seat Type | Flat seat – gasket |
| Tip Projection | Projected insulator |
| Factory Gap | 0.7 mm (preset – do not force adjust) |
| Centre Electrode | Iridium, approx. 0.6 mm fine wire |
| Ground Electrode | Nickel with platinum pad |
| Terminal | Solid |
- Sharper spark for cleaner combustion and smoother idle.
- Reliable firing under boost or high load due to lower required voltage.
- Long life from iridium/platinum design, keeping gap stable over time.
Note: Always confirm compatibility using the vehicle lookup or the Vehicle Fitment tab. Fit as a matched set and torque to the manufacturer’s spec.
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-94123 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
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ADAM (M13) 1.2 (A 12 XEL/B 12 XEL/D 12 XEL) | 69hp
Petrol 1229cc | Hatchback | 2012 - 2019
ADAM (M13) 1.4 (A 14 XEL/B 14 XEL/D 14 XEL) | 87hp
Petrol 1398cc | Hatchback | 2012 - 2019
ADAM (M13) 1.4 (A 14 XER/B 14 XER/D 14 XER) | 101hp
Petrol 1398cc | Hatchback | 2012 - 2019
ASTRA J (P10) 1.4 (68) (A 14 XER/B 14 XER) | 100hp
Petrol 1398cc | Hatchback | 2009 - 2015
ASTRA J (P10) 1.4 (68) (A 14 XEL) | 87hp
Petrol 1398cc | Hatchback | 2009 - 2015
ASTRA J Coupe 1.4 (08) (A 14 XER) | 101hp
Petrol 1398cc | Hatchback | 2011 - 2013
ASTRA J Saloon 1.4 (69) (A 14 XER/B 14 XER) | 101hp
Petrol 1398cc | Saloon | 2012 - 2015
ASTRA J Sports Tourer (P10) 1.4 (35) (A 14 XER/B 14 XER) | 101hp
Petrol 1398cc | Estate | 2010 - 2015
CORSA D (S07) 1.0 (L08, L68) (Z 10 XEP) | 60hp
Petrol 998cc | Hatchback | 2006 - 2010
CORSA D (S07) 1.0 (L08, L68) (A 10 XEP) | 65hp
Petrol 998cc | Hatchback | 2009 - 2014
CORSA D (S07) 1.2 (L08, L68) (A 12 XEL) | 69hp
Petrol 1229cc | Hatchback | 2009 - 2014
CORSA D (S07) 1.2 (L08, L68) (A 12 XER) | 86hp
Petrol 1229cc | Hatchback | 2009 - 2014
CORSA D (S07) 1.4 (L08, L68) (A 14 XEL) | 87hp
Petrol 1398cc | Hatchback | 2009 - 2014
CORSA D (S07) 1.4 (L08, L68) (A 14 XER) | 100hp
Petrol 1398cc | Hatchback | 2009 - 2014
CORSA D Hatchback Van (S07) 1.0 (L08) (A 10 XEP) | 60hp
Petrol 998cc | Hatchback Van | 2006 - 2014
CORSA D Hatchback Van (S07) 1.0 (L08) (A 10 XEP) | 65hp
Petrol 998cc | Hatchback Van | 2010 - 2014
CORSA D Hatchback Van (S07) 1.2 (L08) (A 12 XEL) | 69hp
Petrol 1229cc | Hatchback Van | 2010 - 2014
CORSA D Hatchback Van (S07) 1.4 (L08) (A 14 XER) | 101hp
Petrol 1398cc | Hatchback Van | 2012 - 2014
CORSA E (X15) 1.2 (08, 68) (B 12 XEL/B 12 XER/D 12 XEL) | 69hp
Petrol 1229cc | Hatchback | 2014 - 2025
CORSA E (X15) 1.4 (08, 68) (B 14 XEJ/D 14 XEJ) | 75hp
Petrol 1398cc | Hatchback | 2014 - 2025
CORSA E (X15) 1.4 (08, 68) (B 14 XEL/D 14 XEL) | 90hp
Petrol 1398cc | Hatchback | 2014 - 2025
CORSA E (X15) 1.4 LPG (08, 68) (B 14 XEL) | 90hp
Petrol/Liquified Petroleum Gas (LPG) 1398cc | Hatchback | 2015 - 2025
CORSA E Hatchback Van (X15) 1.2 (08) (B 12 XEL) | 69hp
Petrol 1229cc | Hatchback Van | 2015 - 2025
CORSA E Hatchback Van (X15) 1.4 (08) (B 14 XEJ) | 75hp
Petrol 1398cc | Hatchback Van | 2014 - 2025
CORSA E Hatchback Van (X15) 1.4 (08) (B 14 XEL) | 90hp
Petrol 1398cc | Hatchback Van | 2014 - 2025
MERIVA B MPV (S10) 1.4 (75) (A 14 XER/B 14 XER) | 100hp
Petrol 1398cc | MPV | 2010 - 2017
ADAM (M13) 1.2 (A 12 XEL/B 12 XEL/D 12 XEL) | 69hp
Petrol 1229cc | Hatchback | 2012 - 2019
ADAM (M13) 1.4 (A 14 XEL/B 14 XEL/D 14 XEL) | 87hp
Petrol 1398cc | Hatchback | 2012 - 2019
ADAM (M13) 1.4 (A 14 XER/B 14 XER) | 101hp
Petrol 1398cc | Hatchback | 2012 - 2019
ASTRA Mk V (H) (A04) 1.6 (L48) (A 16 XER/Z 16 XER) | 115hp
Petrol 1598cc | Hatchback | 2004 - 2009
ASTRA Mk VI (J) (P10) 1.4 (A 14 XEL) | 87hp
Petrol 1398cc | Hatchback | 2009 - 2015
ASTRA Mk VI (J) (P10) 1.4 (A 14 XER/B 14 XER) | 100hp
Petrol 1398cc | Hatchback | 2009 - 2015
ASTRA Mk VI (J) Estate (P10) 1.4 (A 14 XEL) | 87hp
Petrol 1398cc | Estate | 2010 - 2015
ASTRA Mk VI (J) Estate (P10) 1.4 (A 14 XER/B 14 XER) | 101hp
Petrol 1398cc | Estate | 2010 - 2015
ASTRA Mk VI (J) GTC (P10) 1.4 (A 14 XER) | 101hp
Petrol 1398cc | Hatchback | 2011 - 2018
CORSA Mk III (D) (S07) 1.0 (L08) (Z 10 XEP) | 60hp
Petrol 998cc | Hatchback | 2006 - 2014
CORSA Mk III (D) (S07) 1.0 i 12V (L08) (A 10 XEP) | 65hp
Petrol 998cc | Hatchback | 2010 - 2014
CORSA Mk III (D) (S07) 1.2 (L08) (A 12 XEL) | 69hp
Petrol 1229cc | Hatchback | 2010 - 2014
CORSA Mk III (D) (S07) 1.2 i 16V (L08) (A 12 XER) | 86hp
Petrol 1229cc | Hatchback | 2009 - 2014
CORSA Mk III (D) (S07) 1.4 (L08) (A 14 XER) | 101hp
Petrol 1398cc | Hatchback | 2010 - 2014
CORSA Mk IV (E) (X15) 1.2 (B 12 XEL) | 69hp
Petrol 1229cc | Hatchback | 2014 - 2025
CORSA Mk IV (E) (X15) 1.4 (B 14 XEL/D 14 XEL) | 90hp
Petrol 1398cc | Hatchback | 2014 - 2025
CORSA Mk IV (E) (X15) 1.4 (B 14 XEJ/D 14 XEJ) | 75hp
Petrol 1398cc | Hatchback | 2014 - 2025
CORSAVAN Mk III (D) Hatchback Van (S07) 1.2 (A 12 XEL) | 69hp
Petrol 1229cc | Hatchback Van | 2010 - 2025
CORSAVAN Mk IV (E) Hatchback Van (X15) 1.2 (B 12 XEL) | 69hp
Petrol 1229cc | Hatchback Van | 2014 - 2025
MERIVA Mk II (B) (S10) 1.4 (A 14 XER/B 14 XER) | 101hp
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