2002 Saturn SL2 Automatic, MP6FACTORY OEM SERVICE PROCEDURE

Spark Plugs

SPARK PLUG TYPE

Application Spark Plug Type Spark Plug No.
1.8L Denso SR16R-11
NGK IFR5A-11
1.9L
DOHC NGK BKR5ESA-11
SOHC NGK BKR4ESA-11
2.2L
Alero & Grand Am AC 41-981
Cavalier & Sunfire AC (1)
Saturn ("L" Series) AC 41-628
2.4L AC 41-963
3.0L Bosch FLR9LTE
3.1L & 3.4L AC 41-940
3.5L
Aurora AC 41-950
Intrigue AC PTR5C-13
3.8L AC 41-921
4.0L AC 41-950
4.6L AC PT16EPR-C13
5.7L
Camaro & Firebird AC 41-952
Corvette AC 41-974
(1) Vehicles identified with 8th VIN character "F", use spark plug No. 41-981. Vehicles identified with 8th VIN character "4", use spark plug No. 41-928.
SPARK PLUG SPECIFICATIONS

Application Gap - In. (mm) Torque - Ft. Lbs. (N.m)
1.8L .040-.043 (1.02-1.09) 13 (18)
1.9L .040 (1.02) 20 (27)
2.2L
"J" Body
Cavalier & Sunfire (1) (2)
Saturn ("L" Series) .045 (1.14) 15 (20)
"N" Body
Alero & Grand Am .042 (1.07) 15 (20)
Malibu .60 (1.52) 11 (15)
2.4L .050 (1.27) 13 (18)
3.0L .040 (1.02) 18 (25)
3.1L & 3.8L .060 (1.52) 11 (15)
3.4L
Except Impala & Monte Carlo .060 (1.52) 11 (15)
Impala & Monte Carlo .060 (1.52) 20 (27)
3.5L
Aurora .050 (1.27) 15 (20)
Intrigue .060 (1.52) 15 (20)
4.0L .050 (1.27) 13-16 (18-22)
4.6L
Deville & Seville .050 (1.27) 13-17 (18-23)
Eldorado .050 (1.27) 11 (15)
5.7L
Camaro & Firebird .060 (1.52) 11 (15)
Corvette .060 (1.52) (3)
(1) On vehicles identified with 8th VIN character "F", gap is .042" (1.07 mm). On vehicles identified with 8th VIN character "4", gap is .040" (1.02 mm).
(2) On vehicles identified with 8th VIN character "F", torque is 15 ft. lbs. (20 N.m). On vehicles identified with 8th VIN character "4", torque is 13 ft. lbs. (18 N.m).
(3) Torque spark plugs on new heads to 20 ft. lbs. (27 N.m). Torque spark plugs on used heads to 11 ft. lbs. (15 N.m).
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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