Spark Plug Specifications
4
Plugs Required
0.8 mm
Electrode Gap
40K mi
Change Interval
| Parameter | Specification |
|---|---|
| Plug Number | Bosch FR7NPP332 |
| Type | Platinum |
| Electrode Gap | 0.8 mm |
| Quantity Required | 4 |
| Change Interval | Every 40,000 miles |
Diesel note: Diesel engines use glow plugs instead of spark plugs. If your Vauxhall Astra is a diesel variant, the spark plug data above applies only to petrol models. Consult your handbook for the correct glow plug specification.
Recommended Spark Plugs for Vauxhall Astra
Bosch FR7NPP332 (Set of 4)
Platinum | OE spec | Pre-gapped to 0.8 mm
From ~£24
Denso Platinum TT
Twin-tip design | Improved ignitability | Set of 4
From ~£22
Bosch Platinum Spark Plug Set
OE supplier | German quality | Set of 4
From ~£20
Frequently Asked Questions
What spark plugs does a Vauxhall Astra use?
The Vauxhall Astra (Mk8/L) uses Bosch FR7NPP332 platinum spark plugs. The gap should be set to 0.8 mm. You need 4 plugs for a full set.
How often should I change spark plugs on a Vauxhall Astra?
Every 40,000 miles for platinum plugs. Iridium and double iridium plugs last longer than standard copper or nickel plugs.
Can I use a different brand of spark plug in my Vauxhall Astra?
Yes, as long as it matches the exact specification — same heat range, thread size, reach, and gap (0.8 mm). Bosch FR7NPP332 from any major manufacturer (NGK, Denso, Bosch, Champion) will work.
What are the signs of worn spark plugs?
Rough idle, poor fuel economy, hesitation during acceleration, engine misfires, and difficulty starting. If your engine management light comes on with a misfire code, spark plugs are a common culprit.