Make:

GMC

Model:

K25

Submodel:

BASE

Beginning Year:

1975

Ending Year:

1975

Engine Type:

L6

Liter:

4.1

CID:

250

Engine Family:

CHEVROLET L6 GAS

Engine Size:

4.1L/250

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

Q

Region:

USA

Make:

GMC

Model:

K25

Submodel:

BASE

Beginning Year:

1975

Ending Year:

1975

Engine Type:

V8

Liter:

5.7

CID:

350

Engine Family:

Chevy small block Gen I

Engine Size:

5.7L/350

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

Y

Region:

USA

Make:

GMC

Model:

K25

Submodel:

BASE

Beginning Year:

1975

Ending Year:

1975

Engine Type:

V8

Liter:

6.6

CID:

400

Engine Family:

Chevy small block Gen I

Engine Size:

6.6L/400

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

M

Region:

USA

Make:

GMC

Model:

K25

Submodel:

BASE

Beginning Year:

1975

Ending Year:

1976

Engine Type:

V8

Liter:

5.7

CID:

350

Engine Family:

Chevy small block Gen I

Engine Size:

5.7L/350

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

V

Region:

USA

Make:

GMC

Model:

K25

Submodel:

BASE

Beginning Year:

1976

Ending Year:

1976

Engine Type:

L6

Liter:

4.1

CID:

250

Engine Family:

CHEVROLET L6 GAS

Engine Size:

4.1L/250

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

D

Region:

USA

Make:

GMC

Model:

K25

Submodel:

BASE

Beginning Year:

1976

Ending Year:

1976

Engine Type:

V8

Liter:

5.7

CID:

350

Engine Family:

Chevy small block Gen I

Engine Size:

5.7L/350

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

L

Region:

USA

Make:

GMC

Model:

K25

Submodel:

BASE

Beginning Year:

1976

Ending Year:

1976

Engine Type:

V8

Liter:

6.6

CID:

400

Engine Family:

Chevy small block Gen I

Engine Size:

6.6L/400

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

U

Region:

USA

Make:

GMC

Model:

K25

Submodel:

BASE

Beginning Year:

1976

Ending Year:

1976

Engine Type:

V8

Liter:

7.4

CID:

454

Engine Family:

Chevy big block Mark IV

Engine Size:

7.4L/454

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

Y

Region:

USA

Make:

GMC

Model:

K25

Submodel:

BASE

Beginning Year:

1977

Ending Year:

1978

Engine Type:

V8

Liter:

5.0

CID:

305

Engine Family:

Chevy small block Gen I

Engine Size:

5.0L/305

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

U

Region:

USA

Make:

GMC

Model:

K25

Submodel:

BASE

Beginning Year:

1977

Ending Year:

1978

Engine Type:

V8

Liter:

5.7

CID:

350

Engine Family:

Chevy small block Gen I

Engine Size:

5.7L/350

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

L

Region:

USA

Make:

GMC

Model:

K25

Submodel:

BASE

Beginning Year:

1977

Ending Year:

1978

Engine Type:

V8

Liter:

6.6

CID:

400

Engine Family:

Chevy small block Gen I

Engine Size:

6.6L/400

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

R

Region:

USA

Make:

GMC

Model:

K25

Submodel:

BASE

Beginning Year:

1977

Ending Year:

1978

Engine Type:

V8

Liter:

7.4

CID:

454

Engine Family:

Chevy big block Mark IV

Engine Size:

7.4L/454

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

S

Region:

USA

Make:

GMC

Model:

K25

Submodel:

BASE

Beginning Year:

1978

Ending Year:

1978

Engine Type:

L6

Liter:

4.1

CID:

250

Engine Family:

CHEVROLET L6 GAS

Engine Size:

4.1L/250

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

D

Region:

USA

Make:

GMC

Model:

K25

Submodel:

HIGH SIERRA

Beginning Year:

1975

Ending Year:

1975

Engine Type:

L6

Liter:

4.1

CID:

250

Engine Family:

CHEVROLET L6 GAS

Engine Size:

4.1L/250

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

Q

Region:

USA

Make:

GMC

Model:

K25

Submodel:

HIGH SIERRA

Beginning Year:

1975

Ending Year:

1975

Engine Type:

V8

Liter:

5.7

CID:

350

Engine Family:

Chevy small block Gen I

Engine Size:

5.7L/350

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

Y

Region:

USA

Make:

GMC

Model:

K25

Submodel:

HIGH SIERRA

Beginning Year:

1975

Ending Year:

1975

Engine Type:

V8

Liter:

6.6

CID:

400

Engine Family:

Chevy small block Gen I

Engine Size:

6.6L/400

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

M

Region:

USA

Make:

GMC

Model:

K25

Submodel:

HIGH SIERRA

Beginning Year:

1975

Ending Year:

1976

Engine Type:

V8

Liter:

5.7

CID:

350

Engine Family:

Chevy small block Gen I

Engine Size:

5.7L/350

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

V

Region:

USA

Make:

GMC

Model:

K25

Submodel:

HIGH SIERRA

Beginning Year:

1976

Ending Year:

1976

Engine Type:

L6

Liter:

4.1

CID:

250

Engine Family:

CHEVROLET L6 GAS

Engine Size:

4.1L/250

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

D

Region:

USA

Make:

GMC

Model:

K25

Submodel:

HIGH SIERRA

Beginning Year:

1976

Ending Year:

1976

Engine Type:

V8

Liter:

5.7

CID:

350

Engine Family:

Chevy small block Gen I

Engine Size:

5.7L/350

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

L

Region:

USA

Make:

GMC

Model:

K25

Submodel:

HIGH SIERRA

Beginning Year:

1976

Ending Year:

1976

Engine Type:

V8

Liter:

6.6

CID:

400

Engine Family:

Chevy small block Gen I

Engine Size:

6.6L/400

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

U

Region:

USA

Make:

GMC

Model:

K25

Submodel:

HIGH SIERRA

Beginning Year:

1976

Ending Year:

1976

Engine Type:

V8

Liter:

7.4

CID:

454

Engine Family:

Chevy big block Mark IV

Engine Size:

7.4L/454

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

Y

Region:

USA

Make:

GMC

Model:

K25

Submodel:

HIGH SIERRA

Beginning Year:

1977

Ending Year:

1978

Engine Type:

V8

Liter:

5.0

CID:

305

Engine Family:

Chevy small block Gen I

Engine Size:

5.0L/305

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

U

Region:

USA

Make:

GMC

Model:

K25

Submodel:

HIGH SIERRA

Beginning Year:

1977

Ending Year:

1978

Engine Type:

V8

Liter:

5.7

CID:

350

Engine Family:

Chevy small block Gen I

Engine Size:

5.7L/350

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

L

Region:

USA

Make:

GMC

Model:

K25

Submodel:

HIGH SIERRA

Beginning Year:

1977

Ending Year:

1978

Engine Type:

V8

Liter:

6.6

CID:

400

Engine Family:

Chevy small block Gen I

Engine Size:

6.6L/400

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

R

Region:

USA

Make:

GMC

Model:

K25

Submodel:

HIGH SIERRA

Beginning Year:

1977

Ending Year:

1978

Engine Type:

V8

Liter:

7.4

CID:

454

Engine Family:

Chevy big block Mark IV

Engine Size:

7.4L/454

Drivetrain:

4WD

Application Notes:

Universal Converter; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit; Federal and California Emissions, Not for sale or use on vehicles licensed in the states of CA, CO, ME, and NY. Restrictions may apply in other states. Check with your state authority for details., Pre-OBDII Heavy Duty Unit

Engine VIN Code:

S

Region:

USA