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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).