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.

1992 Lexus SC 300 AutomaticFACTORY OEM SERVICE PROCEDURE

Spark Plugs

SPARK PLUG TYPE

Application	NGK No.
ES300	BCPR6EP-11
LS400 & SC400	BKR6EP-11
SC300	BKR5EP-11

SPARK PLUG SPECIFICATIONS

Application

Gap In. (mm)

Torque Ft. Lbs. (N.m)

Maximum Wear ⁽¹⁾

.051 (1.30)

13 (17)

New Plug

.043 (1.10)

13 (17)

⁽¹⁾	Replace spark plug when worn past this dimension.

Factory Service Tools

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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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