Automotive spark plugs engineered to deliver dependable starts and steady ignition for petrol engines. Bosch Spark Plug Set supplies four pre-set plugs with anti-fouling technology for smoother running and improved acceleration. Are these the right plugs for your engine and straightforward enough for DIY fitting?
⚡ At a Glance
- • Ignition Performance: Consistent spark with a pre-set 1.1 mm electrode gap and four ground electrodes
- • Best for: Owners replacing worn plugs who want straightforward, OE-quality replacements
- • Not ideal for: Vehicles requiring non-standard or manufacturer-specific plug designs without matching specifications
Four pre-set spark plugs with four ground electrodes and a 1.1 mm electrode gap. Advanced surface air-gap technology reduces carbon fouling for more reliable operation.
Reliable starts and smoother running - with a pre-set 1.1 mm electrode gap and four ground electrodes
Electrode gap arrives factory-set at 1.1 mm and each plug includes four ground electrodes to ensure a stable spark path and uniform ignition. No gap adjustment is necessary before fitting.
Quick replacements restore consistent starting and can improve throttle response and smoothness, as reported by multiple users.
Reduced carbon fouling - with advanced surface air-gap technology
Surface air-gap technology changes the electrode surface geometry to limit carbon deposits forming on the electrode. This helps maintain spark efficiency under typical combustion conditions.
Longer intervals between fouling-related issues mean steadier ignition over time and fewer premature replacements.
Straightforward installation - with standard thread sizes and a prescribed torque
Threads are specified as 14 mm with a 19 mm thread length and a prescribed tightening torque of 28 Nm. Manufacturer guidance advises no thread lubrication and recommends using a torque wrench.
Fitting is uncomplicated for DIYers and workshops, with no gap tweaking required and clear torque guidance for secure installation.
✨ The 4 Key Reasons for Bosch Spark Plug Set
- Pre-set electrode gap – Guarantees correct 1.1 mm spark spacing for reliable starts
- Advanced surface air-gap technology – Reduces carbon fouling, prolonging service life between replacements
- Four ground electrodes – Improves spark stability for smoother acceleration and fewer misfires
- Pre-fit threads and torque guide – Simplifies installation with 19 mm/14 mm threads and 28 Nm torque
📋 Technical Details at a Glance
- Category: Automotive Parts and Accessories
- Brand: Bosch
- Product type: Spark plug set
- Fitment note: Use parts search to confirm correct fit for vehicle engine requirements
- Quantity: 4 spark plugs
❓ Frequently Asked Questions
Q: Will these spark plugs fit my car?
A: Use the parts search function to confirm compatibility, as engine requirements determine the correct spark plug design for each vehicle.
Q: Do the plugs need gap adjustment before fitting?
A: No adjustment is necessary because the electrode gap is pre-set to 1.1 mm; follow the installation guidance and torque specification.
Q: How do these plugs affect engine performance?
A: User feedback notes improved smoothness and acceleration, while the advanced surface air-gap technology helps protect against carbon fouling for steadier ignition.
🏆 Our Verdict
Suitable for drivers and mechanics seeking OE-quality replacement plugs that are straightforward to fit. Pre-set gaps, four ground electrodes and air-gap technology combine to support reliable ignition and reduced fouling. Long-term value comes from fewer fouling-related issues and simple installation that helps keep maintenance time to a minimum.
