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Spark Plug HELLA 8EH 188 706-421
Spark Plug HELLA 8EH 188 706-421. Fits 17 car models (FORD, MAZDA), 1999–2014. Replaces 9 OE numbers.

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Specification. From the manufacturer's data.
- Brand
- HELLA
- Electrode Gap [mm]
- 1.3 mm
- Thread Size
- M14 x 1.25
- Tightening Torque [Nm]
- 25 Nm
- Thread Length [mm]
- 17.5 mm
- Category
- Spark Plug
- MPN
- 8EH 188 706-421
- SKU
- 0002-8EH 188 706-421
- GTIN / EAN
- 4082300510669
- What's included
- 1x Spark Plug
OE numbers. The originals this part replaces.
Numbers the vehicle makers and other brands use for this part. Only a confirmed OE number links to its own page; other brands' equivalents are under “Equivalent products”.
- FORD13 15 691
- FORD3S4J-12405-AB
- FORD3S4J-18344-AB
- MAZDAL30318110
- MAZDAL341-18-110
- MAZDAL3Y4-18-110
- MAZDAL813-18-110
- MAZDAL84518110
- MAZDAZZC018110
Where this part fits
Original-fit position for OE 3S4J12405AB. The red ring marks where this part installs on the vehicle.

Equivalent products. They fit in the same place.
4 available · 9 numbers In stock from £12.99 to £19.99.
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All 9 cross-reference numbers
Numbers other makers give for this part. They are aftermarket numbers, not the vehicle maker's OE numbers; a linked number is one we sell.
- BOSCH 0 242 236 563
- BOSCH HR7KPP33+
- HELLA 8EH 188 706-421
- HELLA 188 706-421
- HELLA 188706421
- NGK 4477
- NGK 6044
- NGK 90813
- NGK ITR6F13
Compatible cars. FORD, MAZDA, 17 models.
Matched from the manufacturer's data. Production years 1999–2014.
| Model | Engines | Years |
|---|---|---|
| FORD10 models | ||
| FORD FIESTA V (JH, JD) | ST150 | 2001–2014 |
| FORD FOCUS C-MAX (DM2) | 1.8, 2.0 | 2003–2007 |
| FORD FOCUS II (DA, HCP, DP) | 2.0, 2.0 Flex | 2004–2013 |
| FORD FOCUS II Convertible | 2.0 | 2006–2010 |
| FORD FOCUS II Turnier (DA, FFS, DS) | 2.0 | 2004–2012 |
| FORD MONDEO III (B5Y) | 1.8 16V, 2.0 16V | 2000–2007 |
FORD4 more models
| Model | Engines | Years |
|---|---|---|
| FORD MONDEO III Saloon (B4Y) | 1.8 16V, 2.0 16V | 2000–2007 |
| FORD MONDEO III Turnier (BWY) | 1.8 16V, 2.0 16V | 2000–2007 |
| FORD TRANSIT Platform/Chassis (FM , FN , FF) | 2.3 16V CNG RWD, 2.3 16V LPG RWD, 2.3 16V RWD | 2006–2014 |
| FORD TRANSIT Van (FA) | 2.3 16V CNG RWD, 2.3 16V LPG RWD, 2.3 16V RWD | 2006–2014 |
MAZDA7 models
| Model | Engines | Years |
|---|---|---|
| MAZDA 3 (BK) | 2.0 (BKEP) | 2003–2009 |
| MAZDA 3 Saloon (BK) | 2.0 (BKEP) | 1999–2009 |
| MAZDA 6 Hatchback (GG) | 1.8, 2.0 (GGES), 2.3 (GG3S) | 2002–2008 |
| MAZDA 6 Saloon (GG) | 1.8, 2.0 (GGEP, GG10), 2.3 (GG3P) | 2002–2008 |
| MAZDA 6 Station Wagon (GY) | 1.8, 2.3 (GY3W, GY10) | 2002–2008 |
| MAZDA MPV II (LW) | 2.3 (LW3W) | 1999–2006 |
| MAZDA TRIBUTE (EP) | 2.3 AWD (EP3W), 2.3 GX (EP3W) | 2000–2008 |
Always verify compatibility with your vehicle before ordering.
More about this part. Related categories and similar parts.
HELLA
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Common OE numbers for this part
Common original equipment numbers linked to replacement-part pages.
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£5.99
Standard delivery
Delivery estimates depend on current stock availability.
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2-year warranty against manufacturing defects on all parts, counted from delivery. 14-day money-back guarantee if the part doesn't fit your vehicle. Delivery terms
We ship from the EU to 201 countries. Deliveries within the EU carry no customs charges; outside the UK and the EU, the destination country may charge import duties and taxes, paid on delivery. Delivery times and prices by country
Delivery times to EU countries (working days)
Austria 4–7, Belgium 4–7, Bulgaria 5–9, Croatia 5–9, Cyprus 4–19, Czechia 4–7, Denmark 4–8, Estonia 3–4, Finland 6–10, France 5–8, Germany 3–5, Greece 6–10, Hungary 4–7, Ireland 5–9, Italy 5–9, Latvia 2–3, Lithuania 2–3, Luxembourg 4–7, Malta 4–9, Netherlands 4–7, Poland 3–6, Portugal 6–10, Romania 4–8, Slovakia 4–7, Slovenia 4–8, Spain 6–9, Sweden 5–10