Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Design And Function: SPARKPLUGS
To further improve the engine's features, a new type of spark plug is used, from Denso. The designation is "SIP " which means S uper I gnition spark P lug.
An SIP-spark plug has a special design which improves a number of features with a more stable spark. By using a special alloy for both the centre and side electrode, these can have a smaller diameter than normally. The smaller diameter of the electrodes minimizes heat losses during the flame build process, concentrates the electric field, and gives a stronger spark. The stronger spark gives higher engine power, improved fuel economy, better cold-cranking performance, and longer service life. It is the same spark plug for all versions of engine B63x4x, and can also be used for older versions. Electrode gap is 1.0 mm.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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